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DOI | 10.1175/JCLI-D-18-0262.1 |
Precipitation Sensitivity to Local Variations in Tropical Sea Surface Temperature | |
He, Jie1,2,3; Johnson, Nathaniel C.1,2; Vecchi, Gabriel A.4,5; Kirtman, Ben6; Wittenberg, Andrew T.2; Sturm, Stephan7 | |
2018-11-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:22页码:9225-9238 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The driving of tropical precipitation by the variability of the underlying sea surface temperature (SST) plays a critical role in the atmospheric general circulation. To assess the precipitation sensitivity to SST variability, it is necessary to observe and understand the relationship between precipitation and SST. However, the precipitation-SST relationships from any coupled atmosphere-ocean system can be difficult to interpret given the challenge of disentangling the SST-forced atmospheric response and the atmospheric intrinsic variability. This study demonstrates that the two components can be isolated using uncoupled atmosphere-only simulations, which extract the former when driven by time-varying SSTs and the latter when driven by climatological SSTs. With a simple framework that linearly combines the two types of uncoupled simulations, the coupled precipitation-SST relationships are successfully reproduced. Such a framework can be a useful tool for quantitatively diagnosing tropical air-sea interactions. The precipitation sensitivity to SST variability is investigated with the use of uncoupled simulations with prescribed SST anomalies, where the influence of atmospheric intrinsic variability on SST is deactivated. Through a focus on local precipitation-SST relationships, the precipitation sensitivity to local SST variability is determined to be predominantly controlled by the local background SST. In addition, the strength of the precipitation response increases monotonically with the local background SST, with a very sharp growth at high SSTs. These findings are supported by basic principles of moist static stability, from which a simple formula for precipitation sensitivity to local SST variability is derived. |
英文关键词 | Atmosphere-ocean interaction Convection Precipitation Sea surface temperature Coupled models Tropical variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447608800003 |
WOS关键词 | DEEP CONVECTION ; EL-NINO ; ATMOSPHERIC CIRCULATION ; VARIABILITY ; MECHANISMS ; MODEL ; OCEAN ; CONVERGENCE ; PACIFIC ; SIMULATIONS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/20867 |
专题 | 气候变化 |
作者单位 | 1.Princeton Univ, Program Atmospher & Ocean Sci, Princeton, NJ 08544 USA; 2.Geophys Fluid Dynam Lab, Princeton, NJ 08540 USA; 3.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA; 4.Princeton Univ, Dept Geosci, Princeton, NJ 08544 USA; 5.Princeton Environm Inst, Princeton, NJ USA; 6.Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA; 7.Worcester Polytech Inst, Dept Math Sci, Worcester, MA 01609 USA |
推荐引用方式 GB/T 7714 | He, Jie,Johnson, Nathaniel C.,Vecchi, Gabriel A.,et al. Precipitation Sensitivity to Local Variations in Tropical Sea Surface Temperature[J]. JOURNAL OF CLIMATE,2018,31(22):9225-9238. |
APA | He, Jie,Johnson, Nathaniel C.,Vecchi, Gabriel A.,Kirtman, Ben,Wittenberg, Andrew T.,&Sturm, Stephan.(2018).Precipitation Sensitivity to Local Variations in Tropical Sea Surface Temperature.JOURNAL OF CLIMATE,31(22),9225-9238. |
MLA | He, Jie,et al."Precipitation Sensitivity to Local Variations in Tropical Sea Surface Temperature".JOURNAL OF CLIMATE 31.22(2018):9225-9238. |
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