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DOI | 10.1029/2020GL091569 |
Double‐ITCZ as an emergent constraint for future precipitation over Mediterranean climate regions in the North Hemisphere | |
Lu Dong; L. Ruby Leung; Jian Lu; Fengfei Song | |
2021-01-12 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | The semi‐arid Mediterranean climate regions feature wet winter and dry summer, distinct from most other regions on Earth. In response to warming, climate models project increased precipitation in US Southwest (USSW) and decreased in Mediterranean basin (MED) during winter, but with marked uncertainty. Using a multi‐model ensemble, we found that models with excessive double Intertropical Convergence Zone (ITCZ) biases tend to exaggerate the precipitation increase over USSW and understate the precipitation decrease over MED in the future. These relationships are attributed to the atmospheric circulation changes driven by the increased tropical rainfall and the weaker slowdown of the Atlantic Meridional Overturning Circulation under warming, respectively. Constraining the present‐day double‐ITCZ with observations, the projected wetting over USSW is reduced to no change and the drying over MED is intensified by 32%. A relative reduction in future precipitation has profound societal and economic implications for these regions already under severe water stress. |
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/311379 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Lu Dong,L. Ruby Leung,Jian Lu,等. Double‐ITCZ as an emergent constraint for future precipitation over Mediterranean climate regions in the North Hemisphere[J]. Geophysical Research Letters,2021. |
APA | Lu Dong,L. Ruby Leung,Jian Lu,&Fengfei Song.(2021).Double‐ITCZ as an emergent constraint for future precipitation over Mediterranean climate regions in the North Hemisphere.Geophysical Research Letters. |
MLA | Lu Dong,et al."Double‐ITCZ as an emergent constraint for future precipitation over Mediterranean climate regions in the North Hemisphere".Geophysical Research Letters (2021). |
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