{"query_echo":{"q":"","filters":{"analysis_type":["temperature trend analysis"]},"warnings":[{"code":"facet_value_not_in_vocabulary","message":"Value 'temperature trend analysis' for facet 'analysis_type' is not in the controlled vocabulary."}]},"total":{"value":5,"relation":"eq"},"page":1,"page_size":20,"self":"https://climateinsightsdirectory.org/api/v1/search?analysis_type=temperature+trend+analysis","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-000284","url":"https://climateinsightsdirectory.org/document/climcent-000284","title":"Monthly Attribution Overview - January 2025","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2025-01","source_url":"https://assets.ctfassets.net/cxgxgstp8r5d/7KWO6nbseApTHTfPGYfJcG/97d608401b9aaf87106da7a45380c57d/Climate_Central___January_2025_U.S._Attribution_Report.pdf","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"In January 2025, 166 out of 191 analyzed U.S. cities were cooler than normal, with the Ohio Valley and Southeast particularly affected. Despite these cool anomalies, no city set a low temperature record for January, and the warming influence of climate change remained pronounced. Alaska was the warmest state, with Fairbanks recording the highest anomaly at 14.6°F above normal. Analysis using the Climate Shift Index (CSI) showed that days where warmer temperatures were made at least twice as likely by climate change outnumbered days where cooler temperatures were made twice as rare.","ai_generated":true,"unit":"climcent-000284#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Most U.S. cities experienced temperatures cooler than normal in January 2025, with 166 of 191 analyzed cities showing cool anomalies. The Ohio Valley and Southeast were particularly cold, with cities averaging more than 4.5°F cooler than average. Kansas, Wyoming, and West Virginia had cities that were, on average, more than 7°F cooler than normal.","ai_generated":true,"unit":"climcent-000284#insight-1","date_modified":"2026-10-23"},{"text":"Alaska was the most anomalously warm state, with its average city being 9.7°F warmer than usual. Fairbanks, Alaska, was the most unusually hot city, recording a temperature 14.6°F above normal.","ai_generated":true,"unit":"climcent-000284#insight-2","date_modified":"2026-10-23"},{"text":"Despite the widespread cool anomalies, no city in the analysis set a record for the coldest January. Only Bluefield and Parkersburg, West Virginia, recorded the month as among their five coldest Januarys on record.","ai_generated":true,"unit":"climcent-000284#insight-3","date_modified":"2026-10-23"},{"text":"Climate change continued to exert a warming influence despite the overall cool month. Days where warmer temperatures were at least twice as likely due to climate change (CSI level 2 or higher) were more frequent than days where cooler temperatures were at least twice as rare (CSI level -2 or lower).","ai_generated":true,"unit":"climcent-000284#insight-4","date_modified":"2026-10-23"},{"text":"Specific cities showed significant climate-driven warming in January 2025. San Juan, Puerto Rico, had 27 days at CSI 5, meaning temperatures were at least 5 times more likely because of climate change. Juneau, Alaska, is the fastest-warming ACIS station for January on average, having warmed 9.6°F since 1970.","ai_generated":true,"unit":"climcent-000284#insight-5","date_modified":"2026-10-23"}],"climate_tags":["extreme event attribution"],"geography_discussed":["Alaska","Kansas","Wyoming","West Virginia","Puerto Rico","California"],"frame_perspective":[],"analysis_type":["attribution analysis","temperature trend analysis"]},{"id":"climcent-000276","url":"https://climateinsightsdirectory.org/document/climcent-000276","title":"Analysis: Climate change is increasing dangerous nighttime temperatures across the globe","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2024-08-08","source_url":"https://assets.ctfassets.net/cxgxgstp8r5d/60miPwR5LjnZ7CiETSIJ1P/d5c1e21825b36403723e02c1662aeb10/Analysis__Climate_change_is_increasing_dangerous_nighttime_temperatures_across_the_globe.pdf","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The analysis finds that human-caused climate change has significantly increased the frequency of dangerous nighttime temperatures globally, affecting billions of people. Using the Climate Shift Index, the report quantifies additional nights above 18°C, 20°C, and 25°C, noting that these temperatures disrupt sleep and increase risks of cardiovascular conditions and mortality. The most severe impacts are observed in tropical regions and urban areas due to heat island effects, with specific cities in India, Indonesia, and Africa experiencing an additional month or more of extreme nighttime heat.","ai_generated":true,"unit":"climcent-000276#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Human-caused climate change has led to a significant increase in dangerous nighttime temperatures, with 2.4 billion people experiencing an average of at least 2 additional weeks per year where nighttime temperatures exceeded 25°C. Over 1 billion people experienced at least 2 additional weeks per year of nights above 20°C and 18°C.","ai_generated":true,"unit":"climcent-000276#insight-1","date_modified":"2026-10-23"},{"text":"High nighttime temperatures pose severe health risks by preventing the body from recovering from daytime heat, which can increase the relative mortality risk on hot nights by 50 percent compared to non-hot nights. Poor sleep quality resulting from these temperatures is linked to impaired immune function, cardiovascular outcomes, cancer risks, diabetes, and shorter life expectancy.","ai_generated":true,"unit":"climcent-000276#insight-2","date_modified":"2026-10-23"},{"text":"Vulnerable populations, including infants, the elderly, and pregnant women, are disproportionately affected. In pregnant women, sleep disturbance from heat is linked to increased risks of preterm birth, maternal health problems, and postpartum depression. Lower-income populations are also more affected due to poor housing quality and limited access to air conditioning.","ai_generated":true,"unit":"climcent-000276#insight-3","date_modified":"2026-10-23"},{"text":"Urban heat island effects exacerbate the impact of hot nights as global populations urbanize, with 57 percent of the world living in cities in 2022 and a projected 68 percent by 2050.","ai_generated":true,"unit":"climcent-000276#insight-4","date_modified":"2026-10-23"},{"text":"Regional analysis shows Southern Europe experienced the greatest number of days with minimum temperatures above 18°C added by climate change, averaging just over 2 weeks per year. For the 25°C threshold, the greatest increases were seen in Northern and Western Africa, Southeastern and Western Asia, and the Caribbean.","ai_generated":true,"unit":"climcent-000276#insight-5","date_modified":"2026-10-23"},{"text":"At the country level, Uganda and Zambia were most impacted regarding the 18°C threshold, each seeing an additional month of such nights. For the 25°C threshold, 30 to 45 additional days were observed in countries including Trinidad and Tobago, Singapore, Brunei, Gambia, Cambodia, Thailand, Senegal, Niger, Guinea-Bissau, and French Polynesia.","ai_generated":true,"unit":"climcent-000276#insight-6","date_modified":"2026-10-23"},{"text":"City-specific data reveals extreme increases: Kathmandu, Nepal, saw 89 additional days above 18°C. For the 20°C threshold, Bujumbura, Burundi and Barinas, Venezuela experienced 85 and 90 additional nights respectively. Guwahati, India and Cilacap, Indonesia were most affected by the 25°C threshold, with 85 to 86 additional days on average.","ai_generated":true,"unit":"climcent-000276#insight-7","date_modified":"2026-10-23"}],"climate_tags":["climate change","heat wave","public health","urban heat island","fossil fuel","carbon dioxide"],"geography_discussed":["Southern Europe","Uganda","Zambia","Nepal","India","Indonesia","Burundi","Venezuela","United States","Canada","Brazil"],"frame_perspective":[],"analysis_type":["attribution analysis","temperature trend analysis","health impact assessment"]},{"id":"climcent-000068","url":"https://climateinsightsdirectory.org/document/climcent-000068","title":"Monthly Attribution Overview - July 2024","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2024-08-06","source_url":"https://www.climatecentral.org/report/attribution-overview-july-2024","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The report finds that July 2024 temperatures were elevated in the eastern and western thirds of the United States, with the West Coast showing particularly high anomalies. Using the Climate Shift Index (CSI), the analysis identifies the Southwest as having the strongest climate signal, with cities averaging at least 14 days where temperatures were at least three times more likely due to climate change. Specific cities like Spokane, Washington, and Reno, Nevada, showed significant temperature anomalies and long-term warming trends since 1970.","ai_generated":true,"unit":"climcent-000068#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"July 2024 temperatures in the U.S. were elevated in the eastern and western thirds of the country, while the middle region—stretching from Illinois and Iowa down to Texas—was unusually cool. For 15 analyzed cities, this was the hottest July on record, and it ranked in the top five for 44 cities.","ai_generated":true,"unit":"climcent-000068#insight-1","date_modified":"2026-10-23"},{"text":"The West Coast experienced significant heat, with regional average temperatures 3.3 °F above normal. Half of the ten cities with temperature anomalies greater than 5°F were located in California, specifically Fresno, San Jose, Bakersfield, Sacramento, and Stockton.","ai_generated":true,"unit":"climcent-000068#insight-2","date_modified":"2026-10-23"},{"text":"Spokane, Washington, was the most unusually hot city in July, recording a temperature 7.24°F above normal. Long-term trends show that 182 of 191 analyzed ACIS stations have warmed on average since 1970, with Reno, NV, being the fastest warming station for July, increasing by 12.7°F since 1970.","ai_generated":true,"unit":"climcent-000068#insight-3","date_modified":"2026-10-23"},{"text":"The Climate Shift Index (CSI) indicated the strongest climate signal in the Southwest, where eight analyzed cities averaged at least 14 days with CSI values of 3 or higher, meaning temperatures were at least three times more likely because of climate change. San Juan, Puerto Rico, recorded 29 days at CSI 5, and five of the top ten cities with the strongest climate signal were in Florida.","ai_generated":true,"unit":"climcent-000068#insight-4","date_modified":"2026-10-23"}],"climate_tags":["extreme event attribution","extreme heat"],"geography_discussed":["California","Illinois","Iowa","Texas","Spokane","Washington","Reno","Nevada","Boise","Idaho","Fresno","San Jose","Bakersfield","Sacramento","Stockton","San Juan","Puerto Rico","Florida","Miami","West Palm Beach","Fort Myers","Q49255","Sarasota"],"frame_perspective":[],"analysis_type":["attribution analysis","temperature trend analysis"]},{"id":"climcent-000341","url":"https://climateinsightsdirectory.org/document/climcent-000341","title":"The hottest 12-month stretch in recorded history","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2023-11-09","source_url":"https://assets.ctfassets.net/cxgxgstp8r5d/2MfZmFIqY4NQzkhiJ0KRzA/f8cc7af1b96686599c4eed317b3aba5d/Report_-_The_hottest_12-month_stretch_in_recorded_history.pdf","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The period from November 2022 to October 2023 was the hottest 12-month stretch in recorded history, with a global average temperature 1.32°C above the pre-industrial baseline. Using the Climate Shift Index (CSI), Climate Central found that 90% of the global population (7.3 billion people) experienced at least 10 days of temperatures very strongly affected by climate change (CSI level 3 or higher). Approximately 1.9 billion people (24%) experienced a five-day heat wave strongly influenced by carbon pollution (CSI level 2 or higher). The report highlights an inequitable distribution of impacts, with small island developing states and least developed countries facing higher exposure, although heat waves also occurred in G20 nations. The analysis also links human-induced climate change to severe weather events, including deadly flooding in Africa and Libya, and record-breaking wildfires in Canada and Hawaii.","ai_generated":true,"unit":"climcent-000341#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"The 12-month period from November 2022 to October 2023 was the hottest on record, with an estimated global average temperature of 1.32°C above the pre-industrial baseline (1850-1900).","ai_generated":true,"unit":"climcent-000341#insight-1","date_modified":"2026-10-23"},{"text":"A vast majority of the global population experienced temperatures significantly influenced by human-caused climate change: 90% (7.3 billion people) had at least 10 days with a CSI of 3 or higher, and 73% (5.8 billion people) experienced more than a month of such temperatures.","ai_generated":true,"unit":"climcent-000341#insight-2","date_modified":"2026-10-23"},{"text":"Approximately 24% of the global population (1.9 billion people) experienced a heat wave of at least five consecutive days that was strongly influenced by carbon pollution (CSI level 2 or higher).","ai_generated":true,"unit":"climcent-000341#insight-3","date_modified":"2026-10-23"},{"text":"Climate-driven heat impacts are inequitably distributed, with the highest average CSI values found in small island developing states (2.7) and least developed countries (2.0), compared to G20 countries (0.8).","ai_generated":true,"unit":"climcent-000341#insight-4","date_modified":"2026-10-23"},{"text":"Among the 700 analyzed cities with over 1 million people, Houston, Texas, had the longest extreme heat streak at 22 days, starting July 31, 2023.","ai_generated":true,"unit":"climcent-000341#insight-5","date_modified":"2026-10-23"},{"text":"Human-induced climate change contributed to severe global weather events, including the deadliest storm in Africa's history (Storm Daniel) with over 4,000 victims, and wildfires in Canada that burned over 45 million acres.","ai_generated":true,"unit":"climcent-000341#insight-6","date_modified":"2026-10-23"}],"climate_tags":["carbon dioxide emissions","climate change","heat wave","extreme event attribution","extreme weather event","Small Island Developing States","El Niño southern oscillation","wildfire","flood"],"geography_discussed":["Jamaica","Guatemala","Rwanda","United States","Europe","India","People's Republic of China","Houston","Canada","Hawaii","Libya","Greece","Bulgaria","Turkey","Argentina","Spain","Italy"],"frame_perspective":[],"analysis_type":["attribution analysis","temperature trend analysis","population exposure assessment"]},{"id":"climcent-000277","url":"https://climateinsightsdirectory.org/document/climcent-000277","title":"U.S. FACES A RISE IN MOSQUITO ‘DISEASE DANGER DAYS’","publisher":{"name":"Climate Central","organization":"climate-central"},"document_type":"report","language":"en","date_published":"2018-08-08","source_url":"http://assets.climatecentral.org/pdfs/August2018_CMN_Mosquitoes.pdf?pdf=Mosquitoes-Report","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"Climate Central analyzed temperature data from 244 U.S. cities to determine the increase in days falling within the 61-93°F range suitable for disease transmission by Aedes and Culex mosquitoes. The analysis found that 94% of these cities are experiencing an increase in these 'disease danger days' since 1970, with significant increases noted in California, the Southwest, and some northern cities. While most areas face higher risks, some locations like Phoenix may become too hot for mosquito survival. The report also highlights that warmer temperatures shorten the Extrinsic Incubation Period (EIP) of viruses, potentially increasing the number of infectious mosquitoes and expanding the range of species like Aedes albopictus.","ai_generated":true,"unit":"climcent-000277#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Analysis of 244 U.S. cities shows that 94 percent (229 cities) have experienced an increase in 'disease danger days'—days with average temperatures between 61 and 93 degrees Fahrenheit—since 1970.","ai_generated":true,"unit":"climcent-000277#insight-1","date_modified":"2026-10-23"},{"text":"The cities with the largest increases in disease danger days include Reno, NV, San Francisco, CA, Santa Maria, CA, Las Cruces, NM, El Paso, TX, Tucson, AZ, Helena, MT, Erie, PA, and Bluefield, VA.","ai_generated":true,"unit":"climcent-000277#insight-2","date_modified":"2026-10-23"},{"text":"Rising temperatures can accelerate the transmission of viruses by shortening the Extrinsic Incubation Period (EIP), which is the time it takes for a virus to develop inside the mosquito and become transmittable to humans.","ai_generated":true,"unit":"climcent-000277#insight-3","date_modified":"2026-10-23"},{"text":"The land area in the U.S. suitable for Aedes albopictus mosquitoes is projected to grow from 5 percent to approximately 50 percent by 2100, potentially placing 60 percent of the northeastern U.S. population at risk for diseases such as Zika, dengue, and West Nile virus.","ai_generated":true,"unit":"climcent-000277#insight-4","date_modified":"2026-10-23"},{"text":"Extreme heat may limit disease transmission in some areas; for instance, Phoenix has seen a decrease in disease danger days since 1970 because more days now exceed 95 degrees Fahrenheit, which is beyond the range for transmission.","ai_generated":true,"unit":"climcent-000277#insight-5","date_modified":"2026-10-23"}],"climate_tags":["climate change","vector-borne disease","public health"],"geography_discussed":["Puerto Rico","Texas","Florida","Hawaii","California","New Mexico","Arizona","Montana","Pennsylvania","Idaho","Vermont","Washington","New York","Michigan","Honolulu","San Juan","Phoenix","Raleigh","Atlanta","South America","Central America","Caribbean"],"frame_perspective":[],"analysis_type":["temperature trend analysis","geographic risk assessment"]}]}