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Share of studied extremes made more likely or severe by climate change (Carbon Brief map)

Of the extreme weather events and trends in Carbon Brief's map of attribution studies, the share that studies found were made more likely or more severe by human-caused climate change, as of the update of 19 March 2026. The share describes the studies collected, which cluster in Europe, East Asia and North America; it is not the share of all extreme weather.

Latest value

77%

World (studies of extremes anywhere, as collected by Carbon Brief), 19 March 2026. Version Seventh update, 19 March 2026.

As published

“Across all cases, 77% were found to have been made more likely or severe because of climate change.”

Mapped: How climate change affects extreme weather around the world, "Extremes across the world" section, the paragraph after "To explore the data for a specific region, click the relevant circles on the map" (page last updated 19 March 2026). Checked word for word against the stored copy of the document every time the data is rebuilt.

Where it comes from

Producer
Carbon Brief · Mapped: How climate change affects extreme weather around the world
Version
Seventh update, 19 March 2026
File
https://interactive.carbonbrief.org/attribution-studies/index.html
Fetched
2026-10-05 (automatically), 1,518,493 bytes
Fingerprint
sha256 bb784eb01e72877062c31e49d034391f46e6b1900ba7db9ddb9be4583a0b0816 · Last-Modified Tue, 05 May 2026 11:39:48 GMT
Copies
No Wayback copy recorded yet.
Cite the producer
McSweeney, R. and Tandon, A. Mapped: How climate change affects extreme weather around the world. Carbon Brief, 18 November 2024, last updated 19 March 2026. https://interactive.carbonbrief.org/attribution-studies/index.html

What was done to it

  1. Quoted from "Extremes across the world" section, the paragraph after "To explore the data for a specific region, click the relevant circles on the map" (page last updated 19 March 2026). The quote was found in the visible text of the snapshot (sha256 bb784eb01e72…) before publishing.

    Code: pipeline/src/envdash/transforms/literature.py · code sha256 a5b5e1344e63f00f… · inputs bb784eb01e72…

  2. Value: The percentage in the quote is published as the share of the extremes in the map that Carbon Brief states; it is not recomputed from the data table.

    Code: pipeline/src/envdash/transforms/literature.py · code sha256 a5b5e1344e63f00f… · inputs bb784eb01e72…

What it covers

Geography
World (studies of extremes anywhere, as collected by Carbon Brief)
Basis
Carbon Brief's classification of each study's finding: more severe or more likely, less severe or less likely, no discernible human influence, or inconclusive. Shares are of all the extremes in the map.
Unit
percent of the extremes studied (%)