Anthropogenic influence on the intensity of extreme precipitation in the Asian-Australian monsoon region in HadGEM3-A-N216,Atmospheric Science Letters

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Anthropogenic influence on the intensity of extreme precipitation in the Asian-Australian monsoon region in HadGEM3-A-N216
Atmospheric Science Letters ( IF 2.0 ) Pub Date : 2021-03-25 , DOI: 10.1002/asl.1036
Jieyu Liu ₁ , Shaobo Qiao _{1,

2,

3} , Chao Li ₄ , Shankai Tang ₅ , Dong Chen ₁ , Guolin Feng _{1,

3,

6}

Affiliation

The Asian-Australian monsoon (AAM) region is characterized as abundant summer monsoon rainfall, which provides fresh water resources for high-density population there. The research uses HadGEM3-A-N216 model simulations to compare the change of extreme rainfall intensity in the AAM region with and without anthropogenic influences. Although the anthropogenic forcing exerts a weak impact on the climatological mean distribution of the extreme precipitation, it significantly increases the extreme precipitation intensity at each degree in most parts of the AAM region, especially for the northern East Asia, the Bay of Bengal, and Australia. As the extreme degree increases from the 50–98%, the extreme precipitation intensity in the northern East Asia, the Bay of Bengal, and the Australia increase more and more rapidly, while that in the southern East Asia changes from a decreasing trend to an increasing trend. Overall, the stronger extreme precipitation is accompanied by a stronger growth trend under the anthropogenic forcing.

中文翻译：

人为对HadGEM3-A-N216亚澳季风区极端降水强度的影响

亚澳季风（AAM）地区的特点是夏季季风降雨丰富，为那里的高密度人口提供淡水资源。该研究使用 HadGEM3-A-N216 模型模拟来比较有和没有人为影响的 AAM 地区极端降雨强度的变化。人为强迫虽然对极端降水气候平均分布的影响较弱，但在AAM地区的大部分地区，尤其是东亚北部、孟加拉湾和澳大利亚的极端降水强度均显着增加。 . 随着极端度从50%增加到98%，东亚北部、孟加拉湾和澳大利亚的极端降水强度增加越来越快，而东亚南部则由下降趋势转为上升趋势。总体而言，在人为强迫下，极端降水越强，增长趋势越强。

更新日期：2021-03-25

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