{"query_echo":{"q":"","filters":{"analysis_type":["attribution analysis"]},"warnings":[]},"total":{"value":132,"relation":"eq"},"page":1,"page_size":20,"self":"https://climateinsightsdirectory.org/api/v1/search?analysis_type=attribution+analysis","next":"https://climateinsightsdirectory.org/api/v1/search?analysis_type=attribution+analysis&page=2","stability":"beta","ai_marking":{"digital_source_type":{"uri":"http://cv.iptc.org/newscodes/digitalsourcetype/trainedAlgorithmicMedia","name":"Created using Generative AI"},"notice":"Summary and key insights are generated using artificial intelligence."},"results":[{"id":"climcent-000182","url":"https://climateinsightsdirectory.org/document/climcent-000182","title":"Climate Change Raises Rates of U.S. Emergency Room Visits For Heat Illness","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"research paper","language":"en","date_published":"2026-09-09","source_url":"https://www.climatecentral.org/climate-matters/heat-illness-emergency-room-visits","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"New research from Climate Central indicates that climate change accounted for 27% of the rate of heat-related emergency room visits in the U.S. during the warm seasons from 2018 to 2025. The study found that all U.S. regions experienced increased visit rates due to climate change, with the highest rates occurring in southern and western states. A notable peak occurred during the June 2021 northwestern U.S. heat wave, where daily visit rates were approximately 50 times higher than the regional average, with 27% of that rate attributed to climate change.","ai_generated":true,"unit":"climcent-000182#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Between 2018 and 2025, climate change was responsible for 27% of the rate of heat-related emergency room visits in the U.S. during the warm season (April to October).","ai_generated":true,"unit":"climcent-000182#insight-1","date_modified":"2026-10-23"},{"text":"Southern and western states (Regions 6 and 9) saw the highest average rates of heat-related emergency room visits, with climate change contributing to approximately one-quarter of those rates. Region 6—comprising Arkansas, Louisiana, New Mexico, Oklahoma, and Texas—had the highest rate of visits due to climate change, averaging 225 visits per 100,000 ER visits per day, compared to a counterfactual rate of 168 in a world without human-caused climate change.","ai_generated":true,"unit":"climcent-000182#insight-2","date_modified":"2026-10-23"},{"text":"The June 2021 heat wave in the northwestern U.S. (Region 10: Alaska, Idaho, Oregon, and Washington) produced the highest daily rates of heat-related ER visits of the eight-year study period. From June 27 to 29, 2021, the average daily rate was 4,710 visits per 100,000, which is roughly 50 times the region's typical warm-season daily rate of 94 per 100,000; climate change accounted for 27% of this rate.","ai_generated":true,"unit":"climcent-000182#insight-3","date_modified":"2026-10-23"},{"text":"Heat illness generally results in an average of over 67,000 emergency room visits annually in the U.S., with the rate of these visits increasing by nearly 3% on average each year from 2008 to 2020.","ai_generated":true,"unit":"climcent-000182#insight-4","date_modified":"2026-10-23"}],"climate_tags":["extreme heat","public health","climate change","urban heat island"],"geography_discussed":["Europe","Arkansas","Louisiana","New Mexico","Oklahoma","Texas","Alaska","Idaho","Oregon","Washington","Puerto Rico"],"frame_perspective":[],"analysis_type":["attribution analysis","health impact assessment"]},{"id":"climcent-000042","url":"https://climateinsightsdirectory.org/document/climcent-000042","title":"Monthly Attribution Overview – August 2026","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2026-09-02","source_url":"https://www.climatecentral.org/report/monthly-attribution-overview-august-2026","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The report finds that August 2026 saw widespread above-average temperatures across the U.S., with an average anomaly of 1.6°F across 192 cities. The Southwest was the hottest region, and 39 cities recorded one of their top-five hottest Augusts on record. Long-term trends show August warming since 1970 in 187 of the 192 analyzed locations, with Reno, Nevada, seeing the largest increase.","ai_generated":true,"unit":"climcent-000042#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"In August 2026, the United States experienced widespread above-average temperatures, with an average anomaly of 1.6°F across 192 analyzed cities. While 159 cities recorded warmer-than-average conditions, only 28 cities were cooler than average.","ai_generated":true,"unit":"climcent-000042#insight-1","date_modified":"2026-10-23"},{"text":"Temperature elevations occurred across all nine U.S. Climate Regions, with the Southwest being the most extreme, recording average temperatures more than 4.0°F above normal.","ai_generated":true,"unit":"climcent-000042#insight-2","date_modified":"2026-10-23"},{"text":"Thirty-nine cities experienced one of their top-five hottest Augusts on record, based on data generally dating back to 1893. Oklahoma City was the most unusually warm city, with a temperature 7.2°F above usual.","ai_generated":true,"unit":"climcent-000042#insight-3","date_modified":"2026-10-23"},{"text":"Long-term warming trends for August since 1970 were observed in 187 of the 192 analyzed locations. Reno, Nevada, showed the most significant increase, with average August temperatures 11.4°F warmer than in 1970.","ai_generated":true,"unit":"climcent-000042#insight-4","date_modified":"2026-10-23"},{"text":"Climate change significantly influenced temperatures in specific locations; in Albuquerque, New Mexico, San Juan, Puerto Rico, and Honolulu, every day in August had temperatures that were twice as likely because of climate change (CSI 2). On average, Southwest cities had the highest number of CSI 2 or above days, averaging 24.","ai_generated":true,"unit":"climcent-000042#insight-5","date_modified":"2026-10-23"}],"climate_tags":["extreme event attribution"],"geography_discussed":["Oklahoma City","Reno","Albuquerque","San Juan","Honolulu","Southwest"],"frame_perspective":[],"analysis_type":["attribution analysis","trend analysis"]},{"id":"wwatt-000084","url":"https://climateinsightsdirectory.org/document/wwatt-000084","title":"Climate change is driving unprecedented European ocean temperatures with severe impacts for marine life","publisher":{"name":"World Weather Attribution","organization":"world-weather-attribution"},"document_type":"research paper","language":"en","date_published":"2026-08-19","source_url":"https://www.worldweatherattribution.org/climate-change-is-driving-unprecedented-european-ocean-temperatures-with-severe-impacts-for-marine-life/","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The report finds that record-breaking sea surface temperatures in July 2026 across European coasts were driven by human-induced climate change, with some regions experiencing warming that substantially exceeds global averages. These extreme temperatures have triggered marine heatwaves, species range shifts, and increased risks to human health and coastal infrastructure. The analysis indicates that such events would have been virtually impossible in a pre-industrial climate and will continue to intensify as global warming progresses.","ai_generated":true,"unit":"wwatt-000084#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Sea surface temperatures (SSTs) in July 2026 reached record highs, with the Mediterranean experiencing temperatures as much as 6°C above normal in June. In the Western Mediterranean, observed temperatures increased by 3.1°C and in the Eastern Mediterranean by 2.6°C, both of which substantially exceed the level of global warming.","ai_generated":true,"unit":"wwatt-000084#insight-1","date_modified":"2026-10-23"},{"text":"Human-induced climate change has significantly increased the probability and intensity of these events. In the Celtic region, the probability ratio of approximately 30 suggests the 2026 event would have been a 1-in-100-year event in a climate 1.4°C cooler. In the Bay of Biscay and Iberian Peninsula, West Mediterranean, and East Mediterranean regions, these SST values would have been virtually impossible in a pre-industrial climate.","ai_generated":true,"unit":"wwatt-000084#insight-2","date_modified":"2026-10-23"},{"text":"The frequency of marine heatwaves (MHWs) has risen sharply due to warming. In the Eastern Mediterranean, nearly 70% of the area experienced heatwaves today, compared to only 9% in a 1.4°C cooler climate. In the Bay of Biscay and Iberian Peninsula (BIP) region, the area affected increased from 40% to 90%.","ai_generated":true,"unit":"wwatt-000084#insight-3","date_modified":"2026-10-23"},{"text":"Extreme ocean warming is causing severe ecological disruptions, including mass mortality of foundation species like corals and sponges, and species range shifts. Specific observations include an increase in octopuses in UK waters since April 2026 and dolphins feeding on jellyfish due to a decline in mackerel.","ai_generated":true,"unit":"wwatt-000084#insight-4","date_modified":"2026-10-23"},{"text":"High SSTs impact human health and regional weather. The European Centre for Disease Prevention and Control warned of higher risks of water-borne diseases like vibriosis. Additionally, warm seas contribute to elevated coastal humidity and heat stress, and have been linked to extreme rainfall, such as the 2024 Valencia floods.","ai_generated":true,"unit":"wwatt-000084#insight-5","date_modified":"2026-10-23"}],"climate_tags":["sea surface temperature","marine heatwave","extreme rainfall","fossil fuel","aquaculture"],"geography_discussed":["United Kingdom","Valencia","Ireland","Switzerland","Sweden","United States"],"frame_perspective":[],"analysis_type":["attribution analysis","trend analysis","projection"]},{"id":"wwatt-000072","url":"https://climateinsightsdirectory.org/document/wwatt-000072","title":"Flood impacts in Assam driven by high exposure and structural vulnerability amid uncertain rainfall trends","publisher":{"name":"World Weather Attribution","organization":"world-weather-attribution"},"document_type":"research paper","language":"en","date_published":"2026-08-14","source_url":"https://www.worldweatherattribution.org/flood-impacts-in-assam-driven-by-high-exposure-and-structural-vulnerability-amid-uncertain-rainfall-trends/","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The 2026 floods in Upper Assam, which affected over 500,000 people and caused at least 99 deaths, were driven by high exposure and structural vulnerability rather than climate-driven rainfall increases. Analysis shows the rainfall events had return periods of less than two years and that human-induced warming of 1.4°C did not materially alter their likelihood or intensity. The study highlights that unplanned urbanization, deforestation, and colonial land policies have increased vulnerability, while reliance on rigid embankments has proven insufficient for adaptation.","ai_generated":true,"unit":"wwatt-000072#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"The floods and landslides between late June and early August 2026 affected more than 500,000 people, with at least 99 deaths reported in Assam and over 45,000 hectares of cropland submerged.","ai_generated":true,"unit":"wwatt-000072#insight-1","date_modified":"2026-10-23"},{"text":"Analysis indicates that the rainfall associated with the 2026 floods was not exceptional, with both 3-day and 30-day rainfall events having estimated return periods of less than two years.","ai_generated":true,"unit":"wwatt-000072#insight-2","date_modified":"2026-10-23"},{"text":"Human-induced warming of 1.4°C did not materially change the intensity or likelihood of the 2026 heavy rainfall, and observational data shows no clear trends in rainfall, although high uncertainty remains due to low station density.","ai_generated":true,"unit":"wwatt-000072#insight-3","date_modified":"2026-10-23"},{"text":"Anthropogenic factors, including unplanned urbanization, deforestation, and poor drainage, now outweigh natural rainfall variability in explaining flood frequency; additionally, colonial land policies forced indigenous communities onto marginal, flood-prone lands.","ai_generated":true,"unit":"wwatt-000072#insight-4","date_modified":"2026-10-23"},{"text":"Current reliance on rigid structural measures like embankments is insufficient for adaptation as they can block natural drainage and increase breach risks; future strategies should shift toward floodplain restoration and community-based preparedness.","ai_generated":true,"unit":"wwatt-000072#insight-5","date_modified":"2026-10-23"}],"climate_tags":["extreme rainfall","flood","landslide","climate change","land-use change","deforestation","urbanization","climate change adaptation","climate change vulnerability","public health"],"geography_discussed":["Nagaland","Arunachal Pradesh","India"],"frame_perspective":[],"analysis_type":["attribution analysis","vulnerability assessment"]},{"id":"climcent-000109","url":"https://climateinsightsdirectory.org/document/climcent-000109","title":"Climate Change Is Driving More Warm Summer Nights in U.S. Cities","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2026-08-12","source_url":"https://www.climatecentral.org/climate-matters/warm-summer-nights-us-cities","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"Analysis of 243 to 247 major U.S. cities reveals that 95% have seen an increase in unusually warm summer nights since 1970, with an average increase of 24 nights per summer. Using the Climate Shift Index (CSI), the report finds that human-caused climate change now strongly influences an average of 27 warm summer nights per year, compared to just one in the 1970s. The most severe impacts are concentrated in Florida and Puerto Rico, where some cities experience over two months of climate-driven warm nights annually. These trends exacerbate heat stress, disrupt sleep, and increase energy demand for air conditioning, disproportionately affecting vulnerable populations and those in urban heat islands.","ai_generated":true,"unit":"climcent-000109#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"The number of unusually warm summer nights (defined as minimum temperatures above the 1991-2020 normal) has increased in 95% of 243 analyzed major U.S. cities since 1970, adding an average of 24 such nights per summer.","ai_generated":true,"unit":"climcent-000109#insight-1","date_modified":"2026-10-23"},{"text":"Regional data shows the highest increases in warmer-than-normal summer nights occurred in the Southeast, South, and Southwest, with average increases between 33 and 35 nights. The cities with the largest individual increases were Reno, NV (79 nights), Albany, GA (73 nights), and Sarasota, FL (73 nights).","ai_generated":true,"unit":"climcent-000109#insight-2","date_modified":"2026-10-23"},{"text":"Human-caused climate change has a growing influence on nighttime temperatures in all 247 analyzed U.S. cities. The average number of summer nights strongly influenced by climate change (CSI level 2 or higher) has risen from one per summer in the 1970s to 27 per summer currently.","ai_generated":true,"unit":"climcent-000109#insight-3","date_modified":"2026-10-23"},{"text":"The most severe climate-driven nighttime warming is concentrated in Puerto Rico and Florida, where cities experience more than two months of unusually warm summer nights annually. San Juan, Puerto Rico, reports the highest average at 80 nights.","ai_generated":true,"unit":"climcent-000109#insight-4","date_modified":"2026-10-23"},{"text":"Increased nighttime warmth correlates with higher energy demand, with cooling degree days increasing in 97% of the analyzed major U.S. cities since 1970.","ai_generated":true,"unit":"climcent-000109#insight-5","date_modified":"2026-10-23"}],"climate_tags":["climate change","urban heat island","extreme heat","heat stress","air conditioning","energy demand","public health"],"geography_discussed":["Puerto Rico","Florida","World"],"frame_perspective":[],"analysis_type":["trend analysis","attribution analysis"]},{"id":"climcent-000218","url":"https://climateinsightsdirectory.org/document/climcent-000218","title":"Monthly Attribution Overview – July 2026","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2026-08-04","source_url":"https://www.climatecentral.org/report/monthly-attribution-overview-july-2026","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"In July 2026, the United States experienced widespread above-average temperatures, with an average anomaly of 1.5°F across 192 cities. The Northern Rockies and Plains were the warmest region, exceeding normals by more than 4.0°F. Long-term data indicates that 185 of the 192 analyzed cities have warmed since 1970, with Reno, Nevada, showing the most significant increase. Climate attribution analysis using the Climate Shift Index (CSI) showed that San Juan, Puerto Rico, had 31 days where temperatures were at least two times more likely due to climate change.","ai_generated":true,"unit":"climcent-000218#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Across 192 analyzed cities in the U.S., July 2026 saw an average temperature anomaly of 1.5°F, with 169 cities recording warmer-than-average conditions and only four recording cooler-than-average conditions.","ai_generated":true,"unit":"climcent-000218#insight-1","date_modified":"2026-10-23"},{"text":"The Northern Rockies and Plains were identified as the warmest U.S. region in July 2026, with average temperatures more than 4.0°F above normal.","ai_generated":true,"unit":"climcent-000218#insight-2","date_modified":"2026-10-23"},{"text":"Long-term warming trends since 1970 were observed in 185 of the 192 analyzed cities, with Reno, Nevada, experiencing the largest increase at 12.5°F.","ai_generated":true,"unit":"climcent-000218#insight-3","date_modified":"2026-10-23"},{"text":"Climate attribution analysis using the Climate Shift Index (CSI) indicates that San Juan, Puerto Rico, had 31 days in July 2026 where temperatures were at least two times more likely because of climate change. On average, the Southwest region had the highest number of days (22) with a CSI of 2 or above.","ai_generated":true,"unit":"climcent-000218#insight-4","date_modified":"2026-10-23"},{"text":"Rapid City was the most unusually warm city in July 2026, recording a temperature 6.9°F warmer than usual.","ai_generated":true,"unit":"climcent-000218#insight-5","date_modified":"2026-10-23"}],"climate_tags":["extreme event attribution"],"geography_discussed":["Northwest","Southwest","West","Northern Rockies and Plains","South","Southeast","Upper Midwest","Ohio Valley","Northeastern United States","Rapid City","Reno","San Juan","Puerto Rico"],"frame_perspective":[],"analysis_type":["attribution analysis"]},{"id":"climcent-000215","url":"https://climateinsightsdirectory.org/document/climcent-000215","title":"Warming U.S. Cities Face Higher Cooling Demand and Energy Bills","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"briefing","language":"en","date_published":"2026-08","source_url":"https://www.climatecentral.org/climate-briefings/july-2026","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"July 2026 was tied for the warmest July on record globally and was the all-time warmest July for the contiguous U.S. This extreme heat, driven by human-caused climate change and a strengthening El Niño, has led to a significant increase in cooling degree days—a proxy for energy demand—across most major U.S. cities. The report also details widespread drought affecting at least 70% of the contiguous U.S. and record-low sea-ice extents in both the Arctic and Antarctic.","ai_generated":true,"unit":"climcent-000215#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"July 2026 tied with 2024 as the warmest July on record globally for combined land and ocean temperatures, with the Northern Hemisphere experiencing its warmest July on record.","ai_generated":true,"unit":"climcent-000215#insight-1","date_modified":"2026-10-23"},{"text":"The contiguous U.S. experienced its all-time warmest July on record in 2026, surpassing a previous record from 1936. The Southwest and West regions saw their warmest start to the year on record.","ai_generated":true,"unit":"climcent-000215#insight-2","date_modified":"2026-10-23"},{"text":"Cooling demand, measured in cooling degree days, has increased since 1970 in 97% of analyzed major U.S. cities. For the contiguous U.S., July 2026 tied for the sixth-highest count of cooling degree days on record.","ai_generated":true,"unit":"climcent-000215#insight-3","date_modified":"2026-10-23"},{"text":"As of August 13, 2026, at least 70% of the contiguous U.S. faced abnormally dry or drought conditions, with 45 states reporting moderate or worse drought.","ai_generated":true,"unit":"climcent-000215#insight-4","date_modified":"2026-10-23"},{"text":"A strengthening El Niño is contributing to record temperatures, with a 69% chance of it becoming a record-breaking strong event. Global temperature anomalies are projected to peak around February 2027 at approximately 1.7°C above the 1850-1900 baseline.","ai_generated":true,"unit":"climcent-000215#insight-5","date_modified":"2026-10-23"},{"text":"Human-caused climate change is identified as a key driver of summertime warming trends in 91% of analyzed U.S. cities. In July 2026, 185 of 192 analyzed U.S. cities showed warming since 1970.","ai_generated":true,"unit":"climcent-000215#insight-6","date_modified":"2026-10-23"},{"text":"Other climate indicators for July 2026 include a carbon dioxide level of 429.1 ppm at Mauna Loa, and sea-ice extents that ranked sixth-lowest in the Arctic and fifth-lowest in the Antarctic.","ai_generated":true,"unit":"climcent-000215#insight-7","date_modified":"2026-10-23"}],"climate_tags":["energy demand","air conditioning","drought","extreme heat","extreme event attribution","precipitation"],"geography_discussed":["Africa","Asia","North America","Salt Lake City","New York","Albany","Schodack","San Juan","Honolulu","West Palm Beach","Puerto Rico"],"frame_perspective":[],"analysis_type":["climate monitoring","attribution analysis","seasonal forecasting"]},{"id":"ucs-001288","url":"https://climateinsightsdirectory.org/document/ucs-001288","title":"Wringing the West Dry","publisher":{"name":"Union of Concerned Scientists","organization":"union-of-concerned-scientists"},"document_type":"fact sheet","language":"en","date_published":"2026-08","source_url":"https://www.ucs.org/sites/default/files/2026-08/Wringing-the-West-Dry_English.pdf","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"Research by the Union of Concerned Scientists and University of California, Merced, indicates that emissions from the 'Carbon Majors'—the 122 largest industrial carbon producers—are responsible for approximately half of the climate-driven reductions in snowpack and streamflow, and increases in irrigation demand across the western United States. The analysis highlights specific 'hot spots' in California and the Pacific Northwest, noting that these emissions contributed to a 15% reduction in April snowpack and a 6.1% decrease in warm season streamflow. In California's Central Valley, 10% of observed groundwater loss is attributed to these companies. The document argues that the fossil fuel industry should be held financially accountable for these damages, as local governments and vulnerable communities currently bear the economic costs of adaptation and infrastructure failure.","ai_generated":true,"unit":"ucs-001288#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Human-caused climate change has significantly altered the water cycle in the western United States, reducing April snowpack by about 36%, warm season streamflow by approximately 13%, and increasing irrigation demand by 4.3%.","ai_generated":true,"unit":"ucs-001288#insight-1","date_modified":"2026-10-23"},{"text":"Emissions from the 'Carbon Majors' (the 122 largest fossil fuel and cement companies) since 1950 are responsible for roughly 40% to 64% of the impacts of human-caused climate change on the region's water resources.","ai_generated":true,"unit":"ucs-001288#insight-2","date_modified":"2026-10-23"},{"text":"The specific contributions of Carbon Majors' emissions since 1950 include a 15% annual reduction in April snowpack, a 6.1% decrease in warm season streamflow, and a 2.4% increase in irrigation demand.","ai_generated":true,"unit":"ucs-001288#insight-3","date_modified":"2026-10-23"},{"text":"In California's Central Valley, 10% of the total observed groundwater loss is attributable to emissions from the Carbon Majors, while human-caused climate change overall accounts for 20% of that loss.","ai_generated":true,"unit":"ucs-001288#insight-4","date_modified":"2026-10-23"},{"text":"Climate change is shifting the timing of water availability, with the midpoint of annual streamflow occurring roughly six days earlier due to Carbon Majors' emissions, and between 5 and 30 days earlier in some mountainous regions.","ai_generated":true,"unit":"ucs-001288#insight-5","date_modified":"2026-10-23"}],"climate_tags":["water scarcity","climate change litigation","climate finance","fossil fuel industry"],"geography_discussed":["California","Central Valley","Middle Columbia River Basin","Washington","Oregon","San Joaquin Valley","Sacramento Basin","Colorado River Basin","Los Angeles"],"frame_perspective":[],"analysis_type":["attribution analysis","economic impact assessment"]},{"id":"wwatt-000013","url":"https://climateinsightsdirectory.org/document/wwatt-000013","title":"fossil-fuel-emissions-have-rapidly-worsened-european-heatwaves-in-just-a-few-decades","publisher":{"name":"World Weather Attribution","organization":"world-weather-attribution"},"document_type":"research paper","language":"en","date_published":"2026-06-26","source_url":"https://www.worldweatherattribution.org/fossil-fuel-emissions-have-rapidly-worsened-european-heatwaves-in-just-a-few-decades/","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The June 2026 heatwave in Western Europe is the most severe ever recorded for the region, with temperatures 5–12°C above seasonal averages. Analysis shows that such an event would have been virtually impossible in 1976 and significantly rarer in 2003, indicating that extreme heat is increasing rapidly due to global warming. The event caused widespread disruption to transport, energy systems, and health services, with 45% of European cities breaking indoor Wet Bulb Globe Temperature (WBGT) thresholds.","ai_generated":true,"unit":"wwatt-000013#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"The June 2026 heatwave is the most severe ever recorded across the studied region of Western Europe, with temperatures in France, Germany, Italy, Spain, and southern England reaching 5–12°C above seasonal averages.","ai_generated":true,"unit":"wwatt-000013#insight-1","date_modified":"2026-10-23"},{"text":"Human-induced climate change has rapidly increased the probability of such extreme heat; the 2026 temperatures would have been virtually impossible in June 1976 and were about 10 times less likely during the day and over 100 times less likely at night in 2003.","ai_generated":true,"unit":"wwatt-000013#insight-2","date_modified":"2026-10-23"},{"text":"June is warming faster than any other month in large parts of Western Europe, with the hottest daily temperatures warming at approximately triple the rate of global warming and nighttime temperatures warming at double the rate.","ai_generated":true,"unit":"wwatt-000013#insight-3","date_modified":"2026-10-23"},{"text":"The heatwave caused significant societal and infrastructure strain, including a 20% rise in emergency medical calls in France, critical incidents at UK hospitals, and power outages in Italy. Additionally, 45% of European cities broke indoor Wet Bulb Globe Temperature (WBGT) thresholds between 18th and 29th June.","ai_generated":true,"unit":"wwatt-000013#insight-4","date_modified":"2026-10-23"},{"text":"The event demonstrates that at 1.4°C of global warming, extreme heat is reaching the limits of societal coping capacity, necessitating a rapid phase-out of fossil fuels to avoid higher future temperatures.","ai_generated":true,"unit":"wwatt-000013#insight-5","date_modified":"2026-10-23"}],"climate_tags":["extreme heat","heat wave","climate change","urban heat island","climate change adaptation","energy poverty","public health"],"geography_discussed":["France","Germany","Italy","Spain","United Kingdom","Belgium","Netherlands","North Africa"],"frame_perspective":[],"analysis_type":["attribution analysis"]},{"id":"climcent-000310","url":"https://climateinsightsdirectory.org/document/climcent-000310","title":"Global Analysis: Dangerous Humid Heat Rising Due to Climate Change","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2026-06-24","source_url":"https://assets.ctfassets.net/cxgxgstp8r5d/1EWJMgG00mPaAsPmNwq5uo/913d61dbd5a18331a4847d36e980d742/Climate_Central_Report_Global_Dangerous_Humid_Heat.pdf","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"Since the 1970s, the global average number of dangerous humid heat days—defined as those with a maximum wet-bulb temperature of 25°C or higher—has more than doubled, rising from 10 to 23 days per year. Climate Central's analysis indicates that human-caused climate change is now the primary driver of this trend, accounting for 64% of all such days since 1970 and 83% of the 23 dangerous days recorded in 2025. The most significant increases are observed in tropical humid regions, including Southeast Asia, coastal West Africa, and tropical South America, though increases are also noted in drier areas like the Arabian Peninsula and the southwestern United States.","ai_generated":true,"unit":"climcent-000310#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Global dangerous humid heat days have more than doubled between the 1970s and the period of 2016-2025, increasing from an average of 10 days per year to 23 days per year.","ai_generated":true,"unit":"climcent-000310#insight-1","date_modified":"2026-10-23"},{"text":"Human-caused climate change is the primary driver of the increase in dangerous humid heat, responsible for 64% of all such days globally since 1970.","ai_generated":true,"unit":"climcent-000310#insight-2","date_modified":"2026-10-23"},{"text":"The influence of climate change on dangerous humid heat has accelerated, with climate change responsible for six times as many such days annually compared to the 1970s; in 2025, 19 of the 23 global average dangerous humid heat days (83%) were added by climate change.","ai_generated":true,"unit":"climcent-000310#insight-3","date_modified":"2026-10-23"},{"text":"The most substantial increases in dangerous humid heat are found in tropical humid regions, where some areas in Southeast Asia, coastal West Africa, and tropical South America now average at least six months of such days annually.","ai_generated":true,"unit":"climcent-000310#insight-4","date_modified":"2026-10-23"},{"text":"A peer-reviewed study by Climate Central scientists found that climate change increased daily maximum wet-bulb temperatures by an average of 1.2°C (~2.2°F) across four recent humid heat events and made peak daily wet-bulb temperatures 65 to 175 times more likely.","ai_generated":true,"unit":"climcent-000310#insight-5","date_modified":"2026-10-23"}],"climate_tags":["extreme heat","extreme event attribution"],"geography_discussed":["South America","West Africa","Southeast Asia","Arabian Peninsula","Australia","United States","Brazil","People's Republic of China","India"],"frame_perspective":[],"analysis_type":["attribution analysis","trend analysis"]},{"id":"climcent-000016","url":"https://climateinsightsdirectory.org/document/climcent-000016","title":"2026 World Cup Stadiums: Extreme Heat Rising","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"briefing","language":"en","date_published":"2026-05-27","source_url":"https://www.climatecentral.org/climate-matters/world-cup-stadiums","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"Climate Central analysis shows that 14 of the 16 host stadiums for the 2026 World Cup are experiencing more extremely hot days during the June-July tournament period than in 1970. Human-caused climate change is responsible for an average of 49% of these extreme heat days across all stadiums, with the highest impact seen in Miami and Mexico City. In 10 repeat host cities, the frequency of extremely hot days has tripled on average since they last hosted the tournament.","ai_generated":true,"unit":"climcent-000016#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Fourteen of the 16 host stadiums for the 2026 World Cup now experience a higher number of extremely hot days during the June-July tournament window compared to the first North American World Cup in 1970, with San Francisco and Los Angeles being the only exceptions.","ai_generated":true,"unit":"climcent-000016#insight-1","date_modified":"2026-10-23"},{"text":"Human-induced climate change, specifically pollution from burning fossil fuels, is responsible for an average of 49% of all extremely hot June-July days across the 16 stadiums since 1970. The impact is most severe at Hard Rock Stadium in Miami (95% of extreme days added by climate change) and Estadio Azteca in Mexico City (92%).","ai_generated":true,"unit":"climcent-000016#insight-2","date_modified":"2026-10-23"},{"text":"In 10 cities that have previously hosted the World Cup, the frequency of extremely hot June-July days has tripled on average when comparing the last 10 years (2016-2025) to the decade preceding their last tournament. Miami and Mexico City saw the most significant increase, with seven times more extreme heat days.","ai_generated":true,"unit":"climcent-000016#insight-3","date_modified":"2026-10-23"},{"text":"Extreme heat is most prevalent at stadiums in Miami, Mexico City, Houston, and Guadalajara, each averaging at least 10 extremely hot June-July days per year over the last decade. Of these, only Houston's stadium is fully climate-controlled, while the others are open-air.","ai_generated":true,"unit":"climcent-000016#insight-4","date_modified":"2026-10-23"},{"text":"High humidity combined with extreme heat creates risks of heat-related illnesses such as heat stroke and heat exhaustion. Stadiums in Dallas, Houston, Miami, and Monterrey frequently experience wet-bulb temperatures of 28°C or higher during June and July, which puts players at risk.","ai_generated":true,"unit":"climcent-000016#insight-5","date_modified":"2026-10-23"}],"climate_tags":["extreme heat","climate change adaptation","fossil fuel"],"geography_discussed":["Miami","Mexico City","Houston","Guadalajara","San Francisco","Los Angeles","Monterrey","Dallas","Atlanta","Vancouver","Tokyo","Qatar"],"frame_perspective":[],"analysis_type":["attribution analysis","trend analysis","risk assessment"]},{"id":"wwatt-000101","url":"https://climateinsightsdirectory.org/document/wwatt-000101","title":"Climate change big player at FIFA World Cup 2026","publisher":{"name":"World Weather Attribution","organization":"world-weather-attribution"},"document_type":"report","language":"en","date_published":"2026-05-14","source_url":"https://www.worldweatherattribution.org/climate-change-big-player-at-fifa-world-cup-2026/","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The report finds that anthropogenic climate change has significantly increased the probability of dangerous humid heat during the 2026 FIFA World Cup compared to 1994. Using Wet Bulb Globe Temperature (WBGT) as a metric, the analysis indicates that more games are expected to exceed the 26C and 28C thresholds recommended by FIFPRO for cooling breaks and postponement, respectively. While air-conditioned stadiums may mitigate risks for players, spectators at outdoor events remain vulnerable. The study concludes that without substantial adaptation and rapid mitigation of fossil fuel use, hosting summer tournaments in the northern hemisphere will become increasingly hazardous.","ai_generated":true,"unit":"wwatt-000101#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"There is a significant discrepancy between the heat stress thresholds recommended by the players' union (FIFPRO) and the official FIFA World Cup regulations. FIFPRO advises cooling breaks at a Wet Bulb Globe Temperature (WBGT) of 26C and postponement at 28C, whereas FIFA regulations only consider postponement when WBGT exceeds 32C.","ai_generated":true,"unit":"wwatt-000101#insight-1","date_modified":"2026-10-23"},{"text":"The number of games expected to occur under heat stress conditions of at least 26C WBGT has risen from 21.3 in 1994 to 25.6 in 2026. The increase is more pronounced in stadiums without cooling, rising from 6.1 to 9.3 games.","ai_generated":true,"unit":"wwatt-000101#insight-2","date_modified":"2026-10-23"},{"text":"Human-induced climate change has increased the likelihood of more severe heat stress. Five games are expected to take place at or above the 28C WBGT threshold in 2026, compared to three in 1994. The probability of reaching 30C WBGT has nearly doubled since 1994.","ai_generated":true,"unit":"wwatt-000101#insight-3","date_modified":"2026-10-23"},{"text":"Specific host cities are identified as having the highest exposure to extreme heat. The stadiums most exposed to extreme heat include New York Met Life Stadium, Philadelphia Lincoln Stadium, Kansas City Arrowhead Stadium, and Miami Hard Rock Stadium, with Estadio Monterrey and Boston Gillette Stadium also noted.","ai_generated":true,"unit":"wwatt-000101#insight-4","date_modified":"2026-10-23"},{"text":"The observed increase in extreme WBGT conditions is confidently attributed to anthropogenic climate change, as climate models simulate trends similar to observations. Event intensity has increased by approximately 0.25C to 0.8C across most stadiums compared to 1994, with the largest increases in Seattle and Vancouver.","ai_generated":true,"unit":"wwatt-000101#insight-5","date_modified":"2026-10-23"},{"text":"Future warming projections indicate that in a 2C global warming scenario (0.7C warmer than today), hazardous heat conditions will increase further. Some venues, such as Lumen Field and Levis Stadium, could see a threefold increase in the likelihood of 28C WBGT events relative to 2026.","ai_generated":true,"unit":"wwatt-000101#insight-6","date_modified":"2026-10-23"}],"climate_tags":["anthropogenic climate change","heat stress","climate change adaptation","climate change mitigation","fossil fuel","extreme heat"],"geography_discussed":["New York City","Miami","Kansas City","Philadelphia","Atlanta","Dallas","Los Angeles","Boston","Seattle","Vancouver","Monterrey","Toronto","Houston","Guadalajara","Mexico City"],"frame_perspective":[],"analysis_type":["attribution analysis","observation-only analysis","climate model simulation"]},{"id":"climcent-000174","url":"https://climateinsightsdirectory.org/document/climcent-000174","title":"Monthly Attribution Overview – April 2026","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2026-05-05","source_url":"https://www.climatecentral.org/report/monthly-attribution-overview-april-2026","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"In April 2026, the United States experienced an average temperature anomaly of 3.4°F across 192 cities, with the Ohio Valley being the warmest region. The report highlights that 183 of the analyzed cities have shown long-term warming trends since 1970, with Reno, Nevada, seeing the greatest increase. Climate attribution analysis indicates that in San Juan, Puerto Rico, temperatures on 19 days in April were at least two times more likely due to climate change.","ai_generated":true,"unit":"climcent-000174#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"The United States experienced widespread above-average temperatures in April 2026, with an average anomaly of 3.4°F across 192 cities. While the western U.S. was only slightly above average, the national trend was driven by the east, particularly the Ohio Valley, which was the warmest region with average temperatures more than 5.8°F above normal.","ai_generated":true,"unit":"climcent-000174#insight-1","date_modified":"2026-10-23"},{"text":"Extreme warmth was recorded in several cities: 22 cities had their hottest April on record, and 62 cities experienced one of their top five warmest April temperatures. Jonesboro, Arkansas, was the most unusually warm city, recording a temperature 8.2°F above usual.","ai_generated":true,"unit":"climcent-000174#insight-2","date_modified":"2026-10-23"},{"text":"Long-term warming trends since 1970 are evident in 183 of the 192 analyzed cities. Reno, Nevada, showed the most significant increase, with average April temperatures rising 7.9°F since 1970.","ai_generated":true,"unit":"climcent-000174#insight-3","date_modified":"2026-10-23"},{"text":"Climate attribution analysis using the Climate Shift Index (CSI) shows that in San Juan, Puerto Rico, 19 days in April had temperatures that were at least two times more likely because of climate change. On average, cities in the Southwest region had the highest number of days (10) with a CSI of 2 or above.","ai_generated":true,"unit":"climcent-000174#insight-4","date_modified":"2026-10-23"}],"climate_tags":["extreme event attribution"],"geography_discussed":["Ohio Valley","Jonesboro","Reno","San Juan","Puerto Rico"],"frame_perspective":[],"analysis_type":["attribution analysis","statistical trend analysis"]},{"id":"climcent-000072","url":"https://climateinsightsdirectory.org/document/climcent-000072","title":"Monthly Attribution Overview – May 2026","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2026-05","source_url":"https://www.climatecentral.org/report/monthly-attribution-overview-may-2026","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"In May 2026, the United States experienced slightly below-average temperatures overall, with an average anomaly of -0.2°F across 192 cities. Despite this, the western U.S. saw above-average temperatures, and the Northern Rockies and Plains region was the warmest, averaging more than 1.6°F above normal. Long-term data indicates that 185 of the 192 analyzed cities have warmed since 1970, with Reno, Nevada, showing the greatest increase at 7.5°F. Climate attribution analysis shows that San Juan, Puerto Rico, had the highest number of days (28) where temperatures were at least two times more likely due to climate change (CSI level 2 or higher).","ai_generated":true,"unit":"climcent-000072#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"The United States had an average temperature anomaly of -0.2°F across 192 cities in May 2026, with 105 cities recording colder-than-average conditions and 83 recording warmer-than-average conditions.","ai_generated":true,"unit":"climcent-000072#insight-1","date_modified":"2026-10-23"},{"text":"Regional temperature variations were evident, with the Northern Rockies and Plains being the warmest region, exceeding normal temperatures by more than 1.6°F. West Palm Beach, Florida, was the most unusually warm city, recording a temperature 4.1°F above usual.","ai_generated":true,"unit":"climcent-000072#insight-2","date_modified":"2026-10-23"},{"text":"Long-term warming trends since 1970 are present in 185 of the 192 analyzed cities. Reno, Nevada, experienced the most significant increase, with average May temperatures rising by 7.5°F since 1970.","ai_generated":true,"unit":"climcent-000072#insight-3","date_modified":"2026-10-23"},{"text":"Climate attribution analysis using the Climate Shift Index (CSI) indicates that San Juan, Puerto Rico, had 28 days in May 2026 where temperatures were at least two times more likely because of climate change. On average, cities in the Southeast region had the highest number of such days, averaging 7.","ai_generated":true,"unit":"climcent-000072#insight-4","date_modified":"2026-10-23"}],"climate_tags":["extreme event attribution"],"geography_discussed":["West Palm Beach","Reno","San Juan","Puerto Rico","Florida","Nevada"],"frame_perspective":[],"analysis_type":["attribution analysis","trend analysis"]},{"id":"climcent-000249","url":"https://climateinsightsdirectory.org/document/climcent-000249","title":"A severe marine heat wave, intensified by climate change, is growing off the coast of California and Mexico","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"fact sheet","language":"en","date_published":"2026-04-24","source_url":"https://www.climatecentral.org/climate-shift-index-alert/severe-marine-heatwave-climate-change-California-Mexico","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","analysis_type"],"summary":{"text":"A severe marine heat wave is impacting the northeast Pacific Ocean, with temperatures 2-5°F above normal and peak anomalies reaching 11°F. The event is strongly influenced by human-caused warming, which has increased the heat wave's footprint and duration.","ai_generated":true,"unit":"climcent-000249#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"A large and persistent marine heat wave is affecting the northeast Pacific Ocean, particularly off the coasts of Central and Southern California and Mexico, with sea surface temperatures currently 2-5°F above normal and localized hotspots exceeding 7°F. Peak anomalies for the full event have reached approximately 11°F.","ai_generated":true,"unit":"climcent-000249#insight-1","date_modified":"2026-10-23"},{"text":"The heat wave is characterized by high intensity and persistence, with 45% to 55% of the analyzed ocean area affected. Some regions have experienced near-continuous heat wave conditions since mid-2025, lasting 200-300 days, with intensities ranging from Category 2 (strong) to Category 4 (extreme).","ai_generated":true,"unit":"climcent-000249#insight-2","date_modified":"2026-10-23"},{"text":"Human-caused climate change has significantly intensified the event; without it, the total marine heat wave footprint would be approximately 36% smaller, and 13.7 million km² of the affected area would not have experienced these conditions. Additionally, the average location would have experienced about 18 heat wave days instead of 115.","ai_generated":true,"unit":"climcent-000249#insight-3","date_modified":"2026-10-23"},{"text":"The marine heat wave is causing food chain disruptions, as seabirds are unable to find typical food sources because fish are migrating toward cooler waters.","ai_generated":true,"unit":"climcent-000249#insight-4","date_modified":"2026-10-23"}],"climate_tags":["marine heatwave","sea surface temperature","climate change"],"geography_discussed":[],"frame_perspective":[],"analysis_type":["attribution analysis"]},{"id":"climcent-000081","url":"https://climateinsightsdirectory.org/document/climcent-000081","title":"Monthly Attribution Overview – March 2026","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2026-04-02","source_url":"https://www.climatecentral.org/report/monthly-attribution-overview-march-2026","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"In March 2026, the United States experienced unprecedented warmth with an average temperature anomaly of 5.8°F across 192 cities. The Southwest was the warmest region, with temperatures more than 10.4°F above normal, and Phoenix recorded the highest individual city anomaly at 12.5°F. Long-term trends show that 188 of the 192 analyzed cities have warmed since 1970, with Wheeling, West Virginia, seeing the greatest increase of 11.7°F. Climate attribution analysis using the Climate Shift Index (CSI) indicates that in Flagstaff, Arizona, temperatures on 28 days in March were made at least two times more likely due to climate change.","ai_generated":true,"unit":"climcent-000081#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"The United States experienced unprecedented temperatures in March 2026, with an average anomaly of 5.8°F across 192 analyzed cities. While 188 cities were warmer than average, only four were cooler. Thirty-three cities recorded their hottest March on record, and 80 cities saw one of their top five warmest March temperatures.","ai_generated":true,"unit":"climcent-000081#insight-1","date_modified":"2026-10-23"},{"text":"Regional analysis shows the Southwest was the warmest area, with average temperatures exceeding normal by more than 10.4°F. Phoenix, Arizona, was the most unusually warm city with a 12.5°F anomaly. Conversely, the Northwest was the most unusually cold region, with average anomalies of -1.8°F.","ai_generated":true,"unit":"climcent-000081#insight-2","date_modified":"2026-10-23"},{"text":"Long-term data indicates that 188 of the 192 analyzed cities have warmed on average since 1970. Wheeling, West Virginia, showed the most significant increase, with average March temperatures rising by 11.7°F since 1970.","ai_generated":true,"unit":"climcent-000081#insight-3","date_modified":"2026-10-23"},{"text":"Climate attribution using the Climate Shift Index (CSI) showed elevated values in eight of nine U.S. Climate Regions. In Flagstaff, Arizona, 28 days in March reached CSI level 2 or higher, meaning temperatures on those days were at least twice as likely to occur because of climate change. On average, Southwest cities had the highest number of CSI 2+ days at 25.","ai_generated":true,"unit":"climcent-000081#insight-4","date_modified":"2026-10-23"}],"climate_tags":["extreme event attribution","heat wave"],"geography_discussed":["Southwest","West Coast","Northwest","Phoenix","Wheeling","West Virginia","Flagstaff","Arizona"],"frame_perspective":[],"analysis_type":["attribution analysis","statistical trend analysis"]},{"id":"climcent-000053","url":"https://climateinsightsdirectory.org/document/climcent-000053","title":"Fastest-Warming U.S. States and Cities","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"briefing","language":"en","date_published":"2026-04","source_url":"https://www.climatecentral.org/climate-briefings/april-2026","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"April 2026 was the fourth-warmest month globally on record, with the contiguous U.S. experiencing its third-warmest April. The report highlights severe drought in the Southeast U.S., record-low Western snowpack, and a persistent marine heat wave off the coasts of California and Mexico. Using the Climate Shift Index (CSI), the analysis attributes springtime warming trends in 98% of analyzed U.S. cities to human-caused climate change, with exceptional warmth noted in Honolulu and San Juan. Forecasts indicate a high probability of a strong El Niño developing later in 2026, potentially driving global temperature anomalies above 1.8°C relative to pre-industrial levels by early 2027.","ai_generated":true,"unit":"climcent-000053#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"April 2026 was the fourth-warmest month on record globally for combined land and ocean temperatures, and the contiguous U.S. experienced its third-warmest April on record.","ai_generated":true,"unit":"climcent-000053#insight-1","date_modified":"2026-10-23"},{"text":"Eight U.S. states recorded their warmest April on record: Illinois, Indiana, Kentucky, Missouri, Ohio, Tennessee, Virginia, and West Virginia. West Virginia's anomaly was particularly high, surpassing its 1896 record by 1.5°F and reaching 8.1°F above the twentieth-century average.","ai_generated":true,"unit":"climcent-000053#insight-2","date_modified":"2026-10-23"},{"text":"Severe drought is affecting the contiguous U.S., with at least 75% of the area experiencing abnormally dry or drought conditions as of May 7, 2026. The Southeast U.S. is seeing the largest extent of severe or worse drought on record since 2000.","ai_generated":true,"unit":"climcent-000053#insight-3","date_modified":"2026-10-23"},{"text":"Water storage in the Western U.S. snowpack reached a record low for April 1, with snow water equivalent remaining below 50% of the 1991-2020 median in most basins from Washington to New Mexico.","ai_generated":true,"unit":"climcent-000053#insight-4","date_modified":"2026-10-23"},{"text":"Analysis using the Climate Shift Index (CSI) indicates that human-caused climate change drove springtime warming trends in 98% of analyzed U.S. cities. Honolulu, Hawaii, and San Juan, Puerto Rico, experienced the most days with CSI 5, signifying exceptional climate-driven warmth.","ai_generated":true,"unit":"climcent-000053#insight-5","date_modified":"2026-10-23"},{"text":"A persistent marine heat wave off the coasts of California and Mexico continued in April, with 30% to 45% of the affected area experiencing conditions at least six times more likely due to human-caused climate change.","ai_generated":true,"unit":"climcent-000053#insight-6","date_modified":"2026-10-23"},{"text":"Global temperature forecasts project anomalies above 1.8°C relative to the 1850-1900 pre-industrial baseline by early 2027, largely driven by the expected development of a strong El Niño in the tropical Pacific later in 2026.","ai_generated":true,"unit":"climcent-000053#insight-7","date_modified":"2026-10-23"},{"text":"Increased temperatures in the U.S. have led to record-high cooling degree days in the Northwest, South, Southwest, and West climate regions from January to April 2026, increasing energy demand for air conditioning.","ai_generated":true,"unit":"climcent-000053#insight-8","date_modified":"2026-10-23"}],"climate_tags":["climate change","drought","marine heatwave","El Niño southern oscillation","carbon dioxide","energy demand","extreme event attribution","sea surface temperature"],"geography_discussed":["Hawaii","Alaska","West Virginia","California","Mexico","Puerto Rico","Canada","British Columbia","Peru","Chile"],"frame_perspective":[],"analysis_type":["climate monitoring","attribution analysis","seasonal forecasting"]},{"id":"climcent-000090","url":"https://climateinsightsdirectory.org/document/climcent-000090","title":"Climate Change Drove Record Winter Warmth in the Western U.S.","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"briefing","language":"en","date_published":"2026-03-18","source_url":"https://www.climatecentral.org/climate-matters/2025-us-winter-attribution","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"Between December 2025 and February 2026, human-caused climate change significantly influenced global temperatures, with more than one in six people daily experiencing temperatures at least twice as likely due to climate change. In the United States, a sharp divide occurred: western states saw record-breaking warmth, with nine states experiencing their warmest December-February on record and Casper, Wyoming, recording the highest temperature anomaly globally among 960 analyzed cities. Conversely, the eastern U.S. faced below-average temperatures and cold snaps that the Climate Shift Index (CSI) indicates were made less likely by climate change. The record warmth in the west has led to low snowpack in Oregon, Colorado, and Utah, threatening water supplies and increasing wildfire risks.","ai_generated":true,"unit":"climcent-000090#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"From December 2025 to February 2026, over one-sixth of the global population experienced daily average temperatures that were at least two times more likely to occur because of human-caused climate change.","ai_generated":true,"unit":"climcent-000090#insight-1","date_modified":"2026-10-23"},{"text":"The western United States experienced exceptional winter warmth, with nine states recording their warmest December-February period on record. Wyoming, Colorado, Montana, and Utah saw average temperatures more than 7°F above normal, with Wyoming reaching 9.3°F above normal.","ai_generated":true,"unit":"climcent-000090#insight-2","date_modified":"2026-10-23"},{"text":"Among 960 cities analyzed globally, the western U.S. dominated the highest temperature anomalies, with 13 of the top 15 cities located there. Casper, Wyoming, had the highest anomaly at 13.0°F.","ai_generated":true,"unit":"climcent-000090#insight-3","date_modified":"2026-10-23"},{"text":"Climate change increased the likelihood of unusually warm temperatures for residents in Hawaii, Arizona, California, Nevada, and New Mexico, who experienced more than a month of such conditions. In 54 U.S. cities, residents experienced at least two weeks of temperatures made at least two times more likely by climate change.","ai_generated":true,"unit":"climcent-000090#insight-4","date_modified":"2026-10-23"},{"text":"The record-low snowpack in Utah, Colorado, and Oregon resulting from the warm winter threatens regional water supplies and may increase the intensity of wildfires due to drier grasslands and forests.","ai_generated":true,"unit":"climcent-000090#insight-5","date_modified":"2026-10-23"},{"text":"While the eastern U.S. experienced below-average temperatures and extreme cold snaps, these events were generally made less likely by climate change. For example, a January 25, 2026, cold snap affecting 34 eastern cities was at least two times less likely to occur due to heat-trapping pollution.","ai_generated":true,"unit":"climcent-000090#insight-6","date_modified":"2026-10-23"}],"climate_tags":["extreme event attribution","water security","wildfire"],"geography_discussed":["Wyoming","Colorado","Montana","Utah","Casper","Hawaii","Arizona","California","Nevada","New Mexico","Puerto Rico","Oregon"],"frame_perspective":[],"analysis_type":["attribution analysis"]},{"id":"climcent-000333","url":"https://climateinsightsdirectory.org/document/climcent-000333","title":"People Exposed to Climate Change: December 2025-February 2026","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2026-03-18","source_url":"https://assets.ctfassets.net/cxgxgstp8r5d/2ooKExIans3PBmtGPVOomg/7a083eeba40b8a3cdfdbab4e2f3a1d87/People_Exposed_to_Climate_Change__December_2025-February_2026.pdf","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"Between December 2025 and February 2026, climate change significantly boosted global temperatures, with over one in six people experiencing strong climate influence daily. Nearly 228 million people faced 30 or more risky heat days added by climate change, with 81% of these individuals residing in Africa. The analysis highlights that in 45 countries, all risky heat days during this period were driven by climate change, and 124 countries saw the average person experience at least 30 days of strong climate influence (CSI level 2 or higher).","ai_generated":true,"unit":"climcent-000333#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Every day from December 1, 2025, to February 28, 2026, approximately 1.4 billion people, or 17% of the global population, experienced temperatures made at least twice as likely due to climate change (CSI level 2 or higher). Exposure peaked on February 13, 14, and 21, when over 3 billion people (about 42% of the global population) were affected.","ai_generated":true,"unit":"climcent-000333#insight-1","date_modified":"2026-10-23"},{"text":"Climate change was the sole driver of all risky heat days (temperatures above the 90th percentile of 1991-2020 observations) in 45 countries during the three-month period. On average across 174 cities that had at least one risky heat day, climate change drove 88% of those days.","ai_generated":true,"unit":"climcent-000333#insight-2","date_modified":"2026-10-23"},{"text":"Nearly 228 million people experienced 30 or more days of risky heat added by climate change. The vast majority of this population, 185 million people (81%), live in Africa. Nigeria had the highest number of exposed people, with 103.6 million (99% of its population) experiencing 30+ days of risky heat added by climate change.","ai_generated":true,"unit":"climcent-000333#insight-3","date_modified":"2026-10-23"},{"text":"In 124 countries, the average person experienced at least 30 days with temperatures strongly influenced by climate change (CSI 2 or higher). In 58 countries, this exposure lasted at least 60 days, with Palau, Réunion, and Suriname experiencing the highest levels at 85 or more days.","ai_generated":true,"unit":"climcent-000333#insight-4","date_modified":"2026-10-23"},{"text":"Urban areas showed significant vulnerability, with 276 of 960 analyzed global cities seeing the average person experience at least 30 days of strong climate influence. Among 20 global megacities, four (with a combined population over 56 million) endured 30 or more such days, including Lagos, Mexico City, Kinshasa, and Sao Paulo.","ai_generated":true,"unit":"climcent-000333#insight-5","date_modified":"2026-10-23"},{"text":"In the United States, the average person in Puerto Rico, Hawaii, Arizona, California, Nevada, and New Mexico experienced at least 30 days of unusually warm temperatures made at least twice as likely by climate change. Wyoming recorded the highest temperature anomaly, averaging 9.3°F (5.2°C) above average.","ai_generated":true,"unit":"climcent-000333#insight-6","date_modified":"2026-10-23"},{"text":"Climate-driven extremes beyond temperature included an early Australian heat wave, record warmth in Greenland's January, and wildfires in Patagonia that killed 23 people. Other impacts included severe drought in Kenya (the driest season since 1981), deadly snowfall in Japan, and fatal floods in Morocco and Sri Lanka, Indonesia, and Thailand.","ai_generated":true,"unit":"climcent-000333#insight-7","date_modified":"2026-10-23"}],"climate_tags":["extreme heat","urban heat island","wildfire","drought","precipitation","flood"],"geography_discussed":["Africa","Oceania","United States","Nigeria","Australia","Greenland","Kenya","Japan"],"frame_perspective":[],"analysis_type":["attribution analysis","population exposure assessment"]},{"id":"climcent-000037","url":"https://climateinsightsdirectory.org/document/climcent-000037","title":"Monthly Attribution Overview – February 2026","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2026-03-03","source_url":"https://www.climatecentral.org/report/monthly-attribution-overview-february-2026","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"In February 2026, the United States experienced an average temperature anomaly of 2.1°F across 192 cities. While the Northeast was the coldest region with an average anomaly of -3.4°F, the Northern Rockies and Plains were the warmest, exceeding normal temperatures by more than 8.4°F. Long-term data indicates that 173 of the 192 analyzed cities have warmed since 1970, with Albany, Georgia, showing the greatest increase at 8.4°F. Climate attribution analysis using the Climate Shift Index (CSI) found that San Juan, Puerto Rico, had 16 days where temperatures were at least five times more likely due to climate change.","ai_generated":true,"unit":"climcent-000037#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"The United States saw overall above-average temperatures in February 2026, with an average anomaly of 2.1°F across 192 analyzed cities. While 125 cities were warmer than average, 67 were cooler.","ai_generated":true,"unit":"climcent-000037#insight-1","date_modified":"2026-10-23"},{"text":"Regional temperature variations were significant: the Northern Rockies and Plains were the warmest region, averaging more than 8.4°F above normal, while the Northeast was the coldest, with average anomalies of -3.4°F.","ai_generated":true,"unit":"climcent-000037#insight-2","date_modified":"2026-10-23"},{"text":"Rapid City, South Dakota, was the most unusually warm city in February 2026, recording a temperature 10.9°F above usual.","ai_generated":true,"unit":"climcent-000037#insight-3","date_modified":"2026-10-23"},{"text":"Long-term trends show that 173 of the 192 analyzed cities have warmed since 1970. Albany, Georgia, recorded the highest increase, with February temperatures 8.4°F warmer than in 1970.","ai_generated":true,"unit":"climcent-000037#insight-4","date_modified":"2026-10-23"},{"text":"Climate attribution using the Climate Shift Index (CSI) showed that San Juan, Puerto Rico, had 16 days in February where temperatures were at least five times more likely because of climate change. The Southwest region had the highest average number of days (15) with a CSI of 2 or above.","ai_generated":true,"unit":"climcent-000037#insight-5","date_modified":"2026-10-23"}],"climate_tags":["extreme event attribution"],"geography_discussed":["Rapid City","Albany","San Juan","Southwest","Northeastern United States","Northern Rockies and Plains"],"frame_perspective":[],"analysis_type":["attribution analysis","trend analysis"]}]}