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描述极端降雨变化和对中国贵州省温度变化的反应

Hongmei Tan¹, Zhonghua He^2,3, Huan Yu¹

¹School of Geography and Environmental Science, Guizhou Normal University, GuiyangGuizhou, 550001, China.

Scientific reports

|September 3, 2024

概括

在中国贵州,极端降雨量正在增加,与温度上升相关的强度更高. 这种由地形影响的趋势对灾害预防和减缓工作构成风险.

科学领域:

气候学气候学气候学
水文学的水文学
环境科学环境科学

背景情况:

地球表面结构和微气候的区域异质性会影响应对气候变化,特别是极端降雨.
贵州省的复杂地形导致了降雨的重新分配,频繁的极端事件和高地质灾害风险.
以前的研究集中在极端气候的时空特征上,缺乏分析不同地下条件下的降雨变化和温度反应.

研究的目的:

调查贵州极端降雨的时空特征和复发周期.
分析极端降雨变化和温度变化之间的关系.
检查地下条件对极端降雨对温度反应的影响.

主要方法:

利用来自贵州31个气象站的每日降雨数据 (1990-2020年) 和未来预测 (2021-2100年).
计算了极端降水事件并分析了它们的空间分布和复发周期.
评估了极端降雨强度和温度变化之间的关系,考虑了地下结构.

主要成果:

历史时期和未来时期都显示了贵州极端降雨的上升趋势,具有明显的空间模式 (例如",南方高,北方低").
温度也呈现上升趋势,空间分布反映了极端降雨模式.
极端降雨强度随着温度的增加而增加,其速度往往超过克劳西乌斯-克莱佩隆速率,呈现出随着变暖而变化的"响应结构".

结论:

贵州的极端降雨正在增加,随着气温的上升而加剧,造成重大灾害风险.
该研究强调了极端降雨量和温度之间的复杂,非线性关系,受区域地质的影响.
调查结果为在不断变化的气候条件下区域防灾和减灾战略提供了关键数据.

关键词:

在CMIP6中,CMIP6是CMIP6.克劳西乌斯克劳佩隆克劳西乌斯克劳佩隆气候变化气候变化气候变化极端的降雨情况.复发期是一个复发期.

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