ReportOctober 27, 2022

365 Days on a Warming Planet

Report: Revealing the fingerprints of human-caused climate change on daily temperatures around the world—using the Climate Shift Index (TM).

Key Facts

● Climate Central is launching the Global Climate Shift Index (CSI-Global)—a new tool that quantifies the local influence of climate change on daily temperatures around the world.

● Climate Central’s first-ever global CSI analysis reveals the influence of human-caused climate change on daily average temperatures for each of the 365 days from October 1, 2021 to September 30, 2022 across the globe—including 1,000+ global cities.

● Human-driven warming affected everyone, everywhere. Over the last 12 months, human-caused climate change affected temperatures experienced by 7.6 billion people. That’s nearly every person on the planet (96% of the global population).

● Those living near the equator and on small islands were especially impacted. Mexico, Brazil, western and eastern Africa, the Arabian Peninsula, and the Malay Archipelago experienced the strongest influence of human-caused climate change on temperatures over the 365 days analyzed.

● On each of the 365 days analyzed, at least 200 million people felt the fingerprint of climate change. The number of people exceeded one billion on 75 of those days. Global exposure peaked on October 9th 2021, when more than 1.7 billion people worldwide experienced warm conditions that were made much more likely due to human-caused climate change.

● Hotspots of human exposure: When accounting for urban population size, the total human exposure to daily temperatures altered by climate change was highest in Lagos, Nigeria; Mexico City, Mexico; and Singapore.

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