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DOI | 10.1175/JCLI-D-16-0649.1 |
Land-Ocean Shifts in Tropical Precipitation Linked to Surface Temperature and Humidity Change | |
Lambert, F. Hugo1; Ferraro, Angus J.1; Chadwick, Robin2 | |
2017-06-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | Acompositing scheme that predicts changes in tropical precipitation under climate change from changes in near-surface relative humidity (RH) and temperature is presented. As shown by earlier work, regions of high tropical precipitation in general circulation models (GCMs) are associated with high near-surface RH and temperature. Under climate change, it is found that high precipitation continues to be associated with the highest surface RH and temperatures in most CMIP5 GCMs, meaning that it is the "rank'' of a given GCM grid box with respect to others that determines how much precipitation falls rather than the absolute value of surface temperature or RH change, consistent with the weak temperature gradient approximation. Further, it is demonstrated that the majority of CMIP5 GCMs are close to a threshold near which reductions in land RH produce large reductions in the RH ranking of some land regions, causing reductions in precipitation over land, particularly South America, and compensating increases over ocean. Recent work on predicting future changes in specific humidity allows the prediction of the qualitative sense of precipitation change in some GCMs when land surface humidity changes are unknown. However, the magnitudes of predicted changes are too small. Further study, perhaps into the role of radiative and land-atmosphere feedbacks, is necessary. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000402379600012 |
WOS关键词 | EARTH SYSTEM MODEL ; GLOBAL CLIMATE MODEL ; BASIC EVALUATION ; COUPLED MODEL ; WATER-VAPOR ; CMIP5 ; PROJECTIONS ; MECHANISMS ; REPRESENTATION ; CONVERGENCE |
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/19799 |
专题 | 气候变化 |
作者单位 | 1.Univ Exeter, Coll Engn Math & Phys Sci, Exeter, Devon, England; 2.Met Off Hadley Ctr, Exeter, Devon, England |
推荐引用方式 GB/T 7714 | Lambert, F. Hugo,Ferraro, Angus J.,Chadwick, Robin. Land-Ocean Shifts in Tropical Precipitation Linked to Surface Temperature and Humidity Change[J]. JOURNAL OF CLIMATE,2017,30(12). |
APA | Lambert, F. Hugo,Ferraro, Angus J.,&Chadwick, Robin.(2017).Land-Ocean Shifts in Tropical Precipitation Linked to Surface Temperature and Humidity Change.JOURNAL OF CLIMATE,30(12). |
MLA | Lambert, F. Hugo,et al."Land-Ocean Shifts in Tropical Precipitation Linked to Surface Temperature and Humidity Change".JOURNAL OF CLIMATE 30.12(2017). |
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