Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0714.1 |
Atmospheric and Oceanic Origins of Tropical Precipitation Variability | |
He, Jie1,2; Deser, Clara3; Soden, Brian J.4 | |
2017-05-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The intrinsic atmospheric and ocean-induced tropical precipitation variability is studied using millennial control simulations with various degrees of ocean coupling. A comparison between the coupled simulation and the atmosphere-only simulation with climatological sea surface temperatures (SSTs) shows that a substantial amount of tropical precipitation variability is generated without oceanic influence. This intrinsic atmospheric variability features a red noise spectrum from daily to monthly time scales and a white noise spectrum beyond the monthly time scale. The oceanic impact is inappreciable for submonthly time scales but important at interannual and longer time scales. For time scales longer than a year, it enhances precipitation variability throughout much of the tropical oceans and suppresses it in some subtropical areas, preferentially in the summer hemisphere. The sign of the ocean-induced precipitation variability can be inferred from the local precipitation-SST relationship, which largely reflects the local feedbacks between the two, although nonlocal forcing associated with El Nio-Southern Oscillation also plays a role. The thermodynamic and dynamic nature of the ocean-induced precipitation variability is studied by comparing the fully coupled and slab ocean simulations. For time scales longer than a year, equatorial precipitation variability is almost entirely driven by ocean circulation, except in the Atlantic Ocean. In the rest of the tropics, ocean-induced precipitation variability is dominated by mixed layer thermodynamics. Additional analyses indicate that both dynamic and thermodynamic oceanic processes are important for establishing the leading modes of large-scale tropical precipitation variability. On the other hand, ocean dynamics likely dampens tropical Pacific variability at multidecadal time scales and beyond. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399680500008 |
WOS关键词 | SURFACE TEMPERATURE ANOMALIES ; PACIFIC DECADAL VARIABILITY ; CLIMATE SYSTEM MODEL ; ENSO ; CONVERGENCE ; MECHANISMS ; GRADIENTS ; WINDS |
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/20061 |
专题 | 气候变化 |
作者单位 | 1.Princeton Univ, Princeton, NJ 08544 USA; 2.NOAA, Geophys Fluid Dynam Lab, Princeton, NJ 08540 USA; 3.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 4.Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA |
推荐引用方式 GB/T 7714 | He, Jie,Deser, Clara,Soden, Brian J.. Atmospheric and Oceanic Origins of Tropical Precipitation Variability[J]. JOURNAL OF CLIMATE,2017,30(9). |
APA | He, Jie,Deser, Clara,&Soden, Brian J..(2017).Atmospheric and Oceanic Origins of Tropical Precipitation Variability.JOURNAL OF CLIMATE,30(9). |
MLA | He, Jie,et al."Atmospheric and Oceanic Origins of Tropical Precipitation Variability".JOURNAL OF CLIMATE 30.9(2017). |
条目包含的文件 | 条目无相关文件。 |
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