Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL087924 |
Lagged compound occurrence of droughts and pluvials globally over the past seven decades | |
Xiaogang He; Justin Sheffield | |
2020-05-13 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | The drought‐pluvial seesaw ‐‐ defined as the phenomenon of pluvials (wet spells) following droughts (dry spells) ‐‐ magnifies the impact of individual pluvial and drought events, yet has not been systematically evaluated, especially at the global scale. We apply an event coincidence analysis to explore the aggregated seesaw behavior based on land surface model simulations for the past seven decades (1950‐2016). We find that globally, about 5.9% and 7.6% of the land surface has experienced statistically significant (p<0.10) drought‐pluvial seesaw behavior during the boreal spring‐summer and fall‐winter, with an average 11.1% and 11.4% of all droughts being followed by pluvials in the following season, respectively. Although this global frequency pattern is modest and coherent changes cannot be detected at the sub‐continental scale, local hotspots of drought‐pluvial seesaw have become more frequent than either droughts or pluvials alone in the last three decades, albeit with a small percentage of area coverage. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/267616 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Xiaogang He,Justin Sheffield. Lagged compound occurrence of droughts and pluvials globally over the past seven decades[J]. Geophysical Research Letters,2020. |
APA | Xiaogang He,&Justin Sheffield.(2020).Lagged compound occurrence of droughts and pluvials globally over the past seven decades.Geophysical Research Letters. |
MLA | Xiaogang He,et al."Lagged compound occurrence of droughts and pluvials globally over the past seven decades".Geophysical Research Letters (2020). |
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