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DOI10.1175/JCLI-D-16-0519.1
Oceanic Origins of Historical Southwest Asia Precipitation During the Boreal Cold Season
Hoell, Andrew1; Barlow, Mathew2; Cannon, Forest3,5; Xu, Taiyi1,4
2017-04-01
发表期刊JOURNAL OF CLIMATE
ISSN0894-8755
EISSN1520-0442
出版年2017
卷号30期号:8
文章类型Article
语种英语
国家USA
英文摘要

While a strong influence on cold season southwest Asia precipitation by Pacific sea surface temperatures (SSTs) has been previously established, the scarcity of southwest Asia precipitation observations prior to 1960 renders the region's long-term precipitation history largely unknown. Here a large ensemble of atmospheric model simulations forced by observed time-varying boundary conditions for 1901-2012 is used to examine the long-term sensitivity of November-April southwest Asia precipitation to Pacific SSTs. It is first established that the models are able to reproduce the key features of regional variability during the best-observed 1960-2005 period and then the pre-1960 variability is investigated using the model simulations.


During the 1960-2005 period, both the mean precipitation and the two leading modes of precipitation variability during November-April are reasonably simulated by the atmospheric models, which include the previously identified relationships with El Nino-Southern Oscillation (ENSO) and the multidecadal warming of Indo-Pacific SSTs. Over the full 1901-2012 period, there are notable variations in precipitation and in the strength of the SST influence. A long-term drying of the region is associated with the Indo-Pacific warming, with a nearly 10% reduction in western most southwest Asia precipitation during 1938-2012. The influence of ENSO on southwest Asia precipitation varied in strength throughout the period: strong prior to the 1950s, weak between 1950 and 1980, and strongest after the 1980s. These variations were not antisymmetric between ENSO phases. El Nino was persistently related with anomalously wet conditions throughout 1901-2012, whereas La Nina was not closely linked to precipitation anomalies prior to the 1970s but has been associated with exceptionally dry conditions thereafter.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000399679900010
WOS关键词MADDEN-JULIAN OSCILLATION ; SURFACE TEMPERATURE ; LA-NINA ; CLIMATE ; TELECONNECTIONS ; VARIABILITY ; WINTER ; STREAMFLOW ; PATTERNS ; AEROSOLS
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/19383
专题气候变化
作者单位1.NOAA, Phys Sci Div, Earth Syst Res Lab, Boulder, CO 80305 USA;
2.Univ Massachusetts, Dept Environm Earth & Atmospher Sci, Lowell, MA USA;
3.Univ Calif Santa Barbara, Dept Geog, Santa Barbara, CA 93106 USA;
4.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO USA;
5.Univ Calif San Diego, Scripps Inst Oceanog, Ctr Western Weather & Water Extremes, San Diego, CA 92103 USA
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Hoell, Andrew,Barlow, Mathew,Cannon, Forest,et al. Oceanic Origins of Historical Southwest Asia Precipitation During the Boreal Cold Season[J]. JOURNAL OF CLIMATE,2017,30(8).
APA Hoell, Andrew,Barlow, Mathew,Cannon, Forest,&Xu, Taiyi.(2017).Oceanic Origins of Historical Southwest Asia Precipitation During the Boreal Cold Season.JOURNAL OF CLIMATE,30(8).
MLA Hoell, Andrew,et al."Oceanic Origins of Historical Southwest Asia Precipitation During the Boreal Cold Season".JOURNAL OF CLIMATE 30.8(2017).
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