Research press release


Nature Geoscience

Rainfall extremes linked to showers


Jan Haerterたちはドイツの降雨の測定を天候と温度の記録と組み合わせて、にわか雨のような対流的降雨を、暖かい空気塊が冷たいものにかぶさる際に起きる事象と分離させた。彼らは、にわか雨は温度の上昇に応答してより急速に強化されることを見つけた。

The amount of rainfall associated with heavy showers rises much faster in response to rising air temperatures than other types of rain, reports a study published online this week in Nature Geoscience. The findings imply that the increase in extreme rain expected with climate warming will mostly be associated with showery precipitation, such as thunderstorms, rather than the more steady rain that falls when different air masses meet.

Jan Haerter and colleagues combined measurements of rainfall over Germany with weather and temperature records to separate instances of showery, convective rainfall from rain events that occur when warm air masses override cooler ones. They find that showery rain intensifies much faster in response to warmer temperatures.

doi: 10.1038/ngeo1731


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