Climate change increased Typhoon Gaemi's wind speeds and rainfall

The study finds that climate change increased rainfall intensity in Taiwan and Hunan province and contributed to a 7% increase in maximum wind speeds for similar storms in the Western North Pacific basin. While sea surface temperatures as hot as those observed during Typhoon Gaemi were "almost impossible without climate change", the analysis did not identify a significant trend for rainfall in the northern Philippines. The report highlights that existing urban plans and flood infrastructure are unable to withstand climate-driven extreme floods, particularly in areas of unplanned urban development like Metro Manila.

• Climate change increased the intensity and likelihood of rainfall in Taiwan and Hunan province. In Taiwan, rainfall was approximately 14% heavier, and in Hunan, it was about 9% heavier due to climate change; in both regions, the total rainfall was made about 60% more likely. If global warming reaches 2°C, these devastating rainfall events will become 30-50% more likely.
• Analysis of category 4-equivalent storms in the Western North Pacific basin using the IRIS model indicates that climate change increased the number of such storms by about 30% (from 5 to 6-7 per year) and increased maximum wind speeds of similar storms by approximately 3.9 m/s, or about 7%.
• Sea surface temperatures observed in July 2024 were approximately 1 degree warmer and would have been "almost impossible without climate change". If warming reaches 2°C, these temperatures are projected to increase by another 0.6°C, making the conditions associated with Typhoon Gaemi about 10 times more likely.
• The study did not find a significant trend for rainfall in the northern Philippines. Although observations suggest 3-day rainfall events increased by 12%, there is high uncertainty in the data, and climate models show both increases and decreases in the current climate.
• Vulnerable populations, including the urban poor in low-lying areas, rural communities dependent on agriculture, and those on landslide-prone hillsides, were most affected. In Metro Manila, unplanned urban development is increasing the number of people at risk, as existing flood control infrastructure cannot withstand climate-driven extreme floods.

APA

World Weather Attribution (2024). Climate change increased Typhoon Gaemi's wind speeds and rainfall. https://www.worldweatherattribution.org/climate-change-increased-typhoon-gaemis-wind-speeds-and-rainfall/

Chicago

World Weather Attribution. Climate change increased Typhoon Gaemi's wind speeds and rainfall. 2024. https://www.worldweatherattribution.org/climate-change-increased-typhoon-gaemis-wind-speeds-and-rainfall/.

Wikipedia

{{cite report |author=World Weather Attribution |title=Climate change increased Typhoon Gaemi's wind speeds and rainfall |date=29 August 2024 |url=https://www.worldweatherattribution.org/climate-change-increased-typhoon-gaemis-wind-speeds-and-rainfall/ |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{worldweatherattribution2024climate, author = {{World Weather Attribution}}, title = {{Climate change increased Typhoon Gaemi's wind speeds and rainfall}}, institution = {World Weather Attribution}, year = {2024}, month = aug, url = {https://www.worldweatherattribution.org/climate-change-increased-typhoon-gaemis-wind-speeds-and-rainfall/}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }