GSTDTAP  > 气候变化
DOI10.1029/2021GL093129
Reversing Sahelian Droughts
Katharine Ricke; Detelina Ivanova; Taylor McKie; Maria Rugenstein
2021-07-03
发表期刊Geophysical Research Letters
出版年2021
英文摘要

Earth system modeling of climate geoengineering proposals suggests that the physical outcomes of such interventions will depend on the particulars of the implementation. Here, we present a first attempt to “geoengineer” a well-known teleconnection between sea surface temperatures (SSTs) and Sahelian precipitation. Using idealized earth system model simulations, we show that selectively cooling the Indian Ocean efficiently increases precipitation in the Sahel region, widening the seasonally migrating rainband over Africa. Applying the SST perturbations derived from the idealized experiments to observationally constrained historical ones, we find that our intervention can reverse conditions as extreme as the mid-20th century Sahelian drought, albeit less efficiently than in the idealized simulations. Side effects include changes in the seasonal distribution of Sahelian precipitation and substantial precipitation reductions in sub-Saharan East Africa. This work represents a proof-of-concept illustration of effects that might be expected with a tailored, regional approach to climate intervention.

领域气候变化
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/333805
专题气候变化
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GB/T 7714
Katharine Ricke,Detelina Ivanova,Taylor McKie,et al. Reversing Sahelian Droughts[J]. Geophysical Research Letters,2021.
APA Katharine Ricke,Detelina Ivanova,Taylor McKie,&Maria Rugenstein.(2021).Reversing Sahelian Droughts.Geophysical Research Letters.
MLA Katharine Ricke,et al."Reversing Sahelian Droughts".Geophysical Research Letters (2021).
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