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Climate Shift Index Alert
From June 11-13, 2024, over 290 million people in Northern Africa, the Mediterranean, and the Middle East are forecast to experience extreme heat made at least five times more likely due to human-caused climate change. Maximum temperatures of 40°C or higher are expected in several countries, including Saudi Arabia, Iraq, Syria, and Egypt. The document highlights risks including wildfires in Greece, damage to Bulgaria's rose oil production, and increased vulnerability for refugees in Libya, Tunisia, and Algeria.
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Document type: Fact sheet
People Exposed to Climate Change: March-May 2024
Between March and May 2024, global temperature records were broken for three consecutive months. Using the Climate Shift Index (CSI), the analysis found that approximately one in four people worldwide experienced temperatures at least three times more likely due to climate change (CSI level 3+) daily. Exposure peaked on April 6, 2024, with 2.7 billion people affected. The most severe impacts were concentrated in Africa, Southeast Asia, Central America, and South America, with 44% of Africa's population experiencing the most extreme attributable heat (CSI level 5 for 60+ days). The report also highlights a strong regional contrast in the U.S., where coastal areas and islands showed higher CSI signals despite lower temperature anomalies compared to the Upper Midwest.
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Document type: Report
Lagos State Climate Adaptation and Resilience Plan (LCARP)
The Lagos State Climate Adaptation and Resilience Plan (LCARP) identifies critical climate risks—sea-level rise, extreme rainfall, and extreme heat—and proposes a $9 billion portfolio of 33 projects to mitigate these threats. The plan emphasizes diversifying financing mechanisms beyond concessional debt to include blended finance, grants, and nature-based solutions, while recommending policy and governance reforms to attract private investment.
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Document type: Report
Climate Change and the Escalation of Global Extreme Heat: Assessing and Addressing the Risks
The report finds that human-induced climate change significantly increased the frequency, intensity, and duration of extreme heat globally from May 2023 to May 2024. Using the Climate Shift Index (CSI), the study determined that 6.3 billion people experienced at least 31 days of extreme heat made at least twice as likely by climate change. It identifies 76 extreme heat waves across 90 countries and highlights critical gaps in impact reporting, particularly in developing regions. The authors advocate for City Heat Action Plans and systemic adaptations to prevent heat-related fatalities.
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Document type: Report
Climate Change and the Escalation of Global Extreme Heat
A World Weather Attribution study found that human-caused climate change increased the likelihood of extreme heat for 6.3 billion people globally, adding an average of 26 extreme heat days per location over the last year.
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Document type: Report
Climate Matters
Analysis of 241 U.S. locations from 1970 to 2023 shows that 95% have experienced warming average summer temperatures, with an average increase of 2.5°F. The Northwest, Southwest, and South regions saw the most significant heating. Additionally, 58% of analyzed locations now experience at least 14 more above-normal summer days than in 1970. The document also highlights the health risks of extreme heat, particularly for vulnerable populations and those affected by urban heat islands, and provides a directory of monitoring tools and hurricane season resources.
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Document type: Fact sheet
Climate change is boosting severe heat in western India
Climate Central analysis indicates that human-caused climate change increased the likelihood of an intense heat event in western and northwestern India from May 18-20, 2024. Forecasts predict daily high temperatures 3°C to over 6°C above average, with some areas exceeding 47°C and nighttime lows remaining above 34°C. Approximately 543 million people in India are expected to experience at least one day with a Climate Shift Index (CSI) level of 3 or higher during this period.
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Document type: Fact sheet
Climate change made the deadly heatwaves that hit millions of highly vulnerable people across Asia more frequent and extreme
A World Weather Attribution study found that human-induced climate change significantly increased the frequency and intensity of April 2024 heatwaves across Asia. In the Philippines, the event would have been "impossible" without climate change, while in West Asia, the probability increased by a factor of 5. In South Asia, extreme temperatures were found to be about 45 times more likely and 0.85ºC hotter. The report highlights disproportionate impacts on vulnerable groups, including 1.7 million displaced people in Gaza and outdoor workers, and notes that existing heat action plans often lack mandatory workplace regulations and retrofitting for informal settlements.
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Document type: Research paper
Dangerous, early-season heat in Florida made five times more likely by climate change
Florida is expected to experience dangerous early-season heat from May 14-16, 2024, with temperatures exceeding 90°F and heat index values between 100°F and 105°F. Human-caused climate change has made these conditions more than five times more likely, as indicated by a Climate Shift Index (CSI) level of 5 in Central and Southern Florida. Approximately 17 million people are expected to experience at least one day of CSI level 5 heat. The event is characterized by high humidity and overnight lows 5°-10°F above average, increasing the risk of heat-related illnesses and mortality, particularly for those without effective cooling.
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Document type: Fact sheet
Weather-related Power Outages Rising
Between 2000 and 2023, 80% of major U.S. power outages were caused by weather, with a significant increase in frequency during the last decade. Severe weather, winter storms, and tropical cyclones are the primary drivers, with Texas and the Southeast region among the most affected. The document highlights the vulnerability of aging infrastructure and the disproportionate impact on marginalized and medically vulnerable populations, while suggesting grid hardening, microgrids, and emissions reductions as paths toward resilience.
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Document type: Fact sheet
Extreme Sahel heatwave that hit highly vulnerable population at the end of Ramadan would not have occurred without climate change
A World Weather Attribution analysis concludes that the extreme heatwave affecting the Sahel in early 2024, which coincided with Ramadan and power cuts, would have been impossible without the 1.2°C of global warming caused by human activities. The event was particularly severe in Mali and Burkina Faso, where 5-day maximum temperatures had a return time of 200 years. The study finds that human-induced warming increased 5-day maximum temperatures by 1.5°C in Mali/Burkina Faso and 1.4°C across the wider Sahel, while the current El Niño event contributed only a small amount (approximately 0.2°C). In Bamako, Mali, the Gabriel Touré hospital reported 102 deaths between 1-4 April, significantly exceeding the 130 deaths recorded for the entire month of April 2023.
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Document type: Research paper
A Climate Security Plan for the UK Home Office
The report identifies that climate change creates systemic stressors for the UK Home Office, ranging from direct threats to public health and infrastructure to indirect risks like societal polarization and organized crime. It argues that the Home Office must move from a reactive to a proactive posture by establishing a high-level climate security policy initiative. The proposed Action Plan is built on four pillars: exercising sustained leadership, understanding and anticipating risks through better data and literacy, collaborating with domestic and international partners, and implementing specific preventative measures to protect citizens and maintain social cohesion.
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Document type: Report
Connecting the Dots: Local U.S. television coverage of extreme weather and climate change
The report finds that while only 5% of event-related local television segments provided climate change context, these segments reached over 17 million people across the 50 largest U.S. media markets. Audiences surged during extreme events, with local television viewership doubling in Orlando during Hurricane Ian and increasing 78% in Los Angeles during Tropical Storm Hilary. Extreme heat events, specifically the July 2023 heat streak in Phoenix, were most frequently linked to climate change, accounting for 48% of all climate-contextualized segments. Analysis of closed captioning shows that 96% of contextualized segments highlighted major impacts in categories such as health and safety, vulnerable communities, power supply, the economy, and travel disruption.
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Document type: Executive summary
Climate Change in the American Mind: Beliefs & Attitudes
The Spring 2024 survey of 1,031 American adults shows that 70% believe global warming is happening, with 59% attributing it primarily to human causes. While 64% of respondents express worry about global warming and 50% report personally experiencing its effects, there is a significant gap in understanding the scientific consensus, with only 21% aware that over 90% of climate scientists agree on human-caused warming. Americans conceptualize the issue primarily as environmental (77%) and scientific (68%). Despite 62% feeling a personal responsibility to help, social engagement remains low, with 66% rarely or never discussing the topic with family and friends.
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Document type: Report
Jakarta Creates 50+ New Parks to Boost Climate Resilience
WRI Indonesia's Cities4Forests initiative helped Jakarta implement two new regulations in 2021 regarding tree management and park provision. This collaboration led to the creation of 54 new urban parks since 2022 and the planting of over 65,000 urban trees, specifically targeting underserved areas to mitigate air pollution, extreme heat, and flooding.
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Document type: Case study
Indian Cities Pioneer Nature-based Solutions and Inspire National Climate Action
WRI implemented over 30 nature-based projects in Mumbai, Kochi, and Jaipur, including urban farming and water-body restoration, to combat climate risks like urban flooding and extreme heat. These initiatives, which included a school-based gardening project in Mumbai scaling to 250 schools and an urban farm at Jaipur Central Jail, led to the establishment of India's first national-level forum on urban nature-based solutions to share best practices and scale these approaches across Indian cities.
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Document type: Case study
INDIGENOUS HOUSING AND CLIMATE RESILIENCE REPORT
The report identifies systemic barriers to climate-resilient Indigenous housing in Canada, rooted in colonial policies and exacerbated by funding gaps and capacity constraints. It highlights the disproportionate risk First Nations face from flooding, wildfire, and permafrost thaw, while recommending a shift toward prevention-focused funding, modernized building codes, and the integration of Indigenous Knowledge.
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Document type: Report
Climate Change in the American Mind: Beliefs & Attitudes, Fall 2023
A survey of 1,033 American adults in October 2023 shows that 72% believe global warming is happening, with 58% attributing it primarily to human causes. While 65% of respondents express worry about global warming and many identify specific local risks like power outages and extreme heat, a majority (65%) rarely or never discuss the topic with family and friends. Approximately 10% of respondents report symptoms of anxiety or depression linked to global warming. Despite these concerns, 60% of Americans disagree that it is too late to act, and 63% feel a personal responsibility to help reduce global warming.
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Document type: Report
Climate Impacts and Costs
The report details how climate change threatens the Port Authority of New York and New Jersey (PANYNJ) through sea level rise, intense storms, and extreme heat. It provides specific projections for sea level rise in New Jersey and New York City, notes the increasing frequency of 'nuisance flooding' at The Battery, and highlights the vulnerability of critical assets like LaGuardia Airport's Runway 13/31. The document quantifies historical damages, such as the billions lost during Superstorm Sandy, and lists a comprehensive set of potential adaptation costs, including flood-proofing buildings, elevating infrastructure, and mitigating heat-induced rail and road degradation.
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Document type: Report
Heat Trends for Holi
The analysis finds that all regions of India experienced net warming in March and April since 1970, with the fastest March warming in Jammu and Kashmir. The probability of temperatures exceeding 40°C during late March has expanded from three states in the 1970s to nine states in 2024, with Bilaspur currently facing the highest risk at 31%.
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Document type: Research paper