Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0502.1 |
Tropical Precipitation and Cross-Equatorial Ocean Heat Transport during the Mid-Holocene | |
Liu, Xiaojuan1; Battisti, David S.1; Donohoe, Aaron2 | |
2017-05-01 | |
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:10 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Summertime insolation intensified in the Northern Hemisphere during the mid-Holocene, resulting in enhanced monsoonal precipitation. In this study, the authors examine the changes in the annual-mean tropical precipitation as well as changes in atmospheric circulation and upper-ocean circulation in the mid-Holocene compared to the preindustrial climate, as simulated by 12 coupled climate models from PMIP3. In addition to the predominant zonally asymmetric changes in tropical precipitation, there is a small northward shift in the location of intense zonal-mean precipitation (mean ITCZ) in the mid-Holocene in the majority (9 out of 12) of the coupled climate models. In contrast, the shift is southward in simulations using an atmospheric model coupled to a slab ocean. The northward mean ITCZ shift in the coupled simulations is due to enhanced northward ocean heat transport across the equator [OHT(EQ)], which demands a compensating southward atmospheric energy transport across the equator, accomplished by shifting the Hadley cell and hence the mean ITCZ northward. The increased northward OHT(EQ) is primarily accomplished by changes in the upper-ocean gyre circulation in the tropical Pacific acting on the zonally asymmetric climatological temperature distribution. The gyre intensification results from the intensification of the monsoonal winds in the Northern Hemisphere and the weakening of the winds in the Southern Hemisphere, both of which are forced directly by the insolation changes. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401006100001 |
WOS关键词 | INTERTROPICAL CONVERGENCE ZONE ; LAST GLACIAL MAXIMUM ; PMIP2 COUPLED SIMULATIONS ; GLOBAL CLIMATE MODEL ; LAND SYSTEM MODEL ; ORBITAL PARAMETERS ; LATE QUATERNARY ; ITCZ LOCATION ; MONSOON ; CMIP5 |
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/20692 |
专题 | 气候变化 |
作者单位 | 1.Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA; 2.Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA |
推荐引用方式 GB/T 7714 | Liu, Xiaojuan,Battisti, David S.,Donohoe, Aaron. Tropical Precipitation and Cross-Equatorial Ocean Heat Transport during the Mid-Holocene[J]. JOURNAL OF CLIMATE,2017,30(10). |
APA | Liu, Xiaojuan,Battisti, David S.,&Donohoe, Aaron.(2017).Tropical Precipitation and Cross-Equatorial Ocean Heat Transport during the Mid-Holocene.JOURNAL OF CLIMATE,30(10). |
MLA | Liu, Xiaojuan,et al."Tropical Precipitation and Cross-Equatorial Ocean Heat Transport during the Mid-Holocene".JOURNAL OF CLIMATE 30.10(2017). |
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