当前位置: X-MOL 学术Theor. Appl. Climatol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A joint extreme index for compound droughts and hot extremes
Theoretical and Applied Climatology ( IF 3.4 ) Pub Date : 2020-07-10 , DOI: 10.1007/s00704-020-03317-x
Zengchao Hao , Fanghua Hao , Vijay P. Singh , Wei Ouyang , Xuan Zhang , Silong Zhang

The past decades have witnessed a surge in the study of compound droughts and hot extremes, which are among the most stressful weather and climate extremes with disastrous impacts. A suitable tool for tracking properties of compound droughts and hot extremes taking into account their dependence is desirable. In this study, we proposed a compound drought-hot extreme index (CDHI) for characterizing compound extremes based on the joint distribution using copula models. Results show that lower CDHI values indicate more severe droughts and hot extremes, which enables the comparison of the joint status of droughts and hot events. The monitoring of historical compound droughts and hot extremes is evaluated based on the CDHI values and associated categories for the period of 1980, 2001, and 2011 in Texas, which demonstrates the usefulness of the proposed index for tracking the joint status of droughts and hot extremes at temporal and spatial scales. The proposed index would provide a useful tool for monitoring compound droughts and hot extremes and providing early warning information.



中文翻译:

极端干旱和极端高温的联合极端指数

在过去的几十年中,对复合干旱和极端高温的研究激增,而极端干旱和极端高温是造成灾难性影响的压力最大的极端天气和气候之一。考虑到它们的依赖性,期望一种合适的工具来追踪复合干旱和极端热的性质。在这项研究中,我们提出了一种复合干旱-干旱极端指数(CDHI),用于基于copula模型的联合分布来表征复合极端。结果表明,较低的CDHI值表示更严重的干旱和极端高温,这使得能够比较干旱和高温事件的联合状况。根据1980年,2001年和2011年德克萨斯州的CDHI值和相关类别,评估了对历史性复合干旱和极端热的监测,这证明了拟议指标在时空尺度上追踪干旱和极端极端气候联合状况的有用性。拟议的指数将提供一个有用的工具,用于监测复合干旱和极端极端情况并提供预警信息。

更新日期:2020-07-13
down
wechat
bug