Climate Change

Ocean warming drove 10% rise in 'extreme' rainfall from Atlantic hurricanes in 2020

The Atlantic hurricane season was the most active on record in 2020. Image: via REUTERS

Ayesha Tandon
Science Journalist, Carbon Brief
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Observed hurricane tracks (black lines) and sea surface temperatures (red and orange shading) for the north Atlantic over 1 June – 30 November 2020.
Observed hurricane tracks (black lines) and sea surface temperatures (red and orange shading) for the north Atlantic over 1 June – 30 November 2020. Image: Reed et al (2022)

Global (solid line) and north Atlantic (dashed line) warming over 1920-2020, based on CESM model runs.
Global (solid line) and north Atlantic (dashed line) warming over 1920-2020, based on CESM model runs. Image: Reed et al (2022).
2020 North Atlantic temperature anomaly compared to 1850 values, based on CESM model runs.
2020 North Atlantic temperature anomaly compared to 1850 values, based on CESM model runs. Image: Reed et al (2022).

Three-day accumulated rainfall [mm/day] from tropical storm Ana (left) and tropical cyclone Batsirai (right) in ERA5 reanalysis data. The red box indicates the region used for the assessment in Mozambique and Malawi.
Three-day accumulated rainfall [mm/day] from tropical storm Ana (left) and tropical cyclone Batsirai (right) in ERA5 reanalysis data. The red box indicates the region used for the assessment in Mozambique and Malawi. Image: World Weather Attribution (2022).
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