Association between recent U.S. northeast precipitation trends and Greenland blocking
Association between recent U.S. northeast precipitation trends and Greenland blocking
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美国东北部近期降水趋势与格陵兰岛阻塞之间的关联
DOI:
10.1002/joc.7555
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Carleton, Andrew M.
中科院分区:
文献类型:
--
作者:
Simonson, Julia M.;Birkel, Sean D.;Maasch, Kirk A.;Mayewski, Paul A.;Lyon, Bradfield;Carleton, Andrew M.
Since the early 2000s, the northeastern region of the United States (USNE) has received increased total annual precipitation along with more frequent extreme precipitation events. Although previous work has discussed the contribution to increased extreme precipitation from tropical cyclones, the largescale driver (s) of summer precipitation increases in the extratropics has received little attention. Here, we show that the summer-season rainfall surpluses across the USNE are related to the increased frequency of atmospheric blocking over Greenland and the negative phase of the North Atlantic Oscillation. The occurrence of these patterns in summer has been previously connected with southward shifted storm tracks and wet conditions across the eastern North Atlantic. Over the USNE, the circulation shifts are also related to enhanced rainfall due to southerly wind anomalies and increased moisture transport into and vertical motion over the region. It is important to note that the current generation of climate models used for future projections is unable to reproduce the observed tendency towards increased atmospheric blocking over Greenland. Thus, clarifying the association between Greenland blocking and recent precipitation changes across the USNE may help inform future climate projections of summer season rainfall for the region.
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DOI:
10.1002/joc.4157
发表时间:
2015-07-01
期刊:
INTERNATIONAL JOURNAL OF CLIMATOLOGY
影响因子:
--
作者:
Hanna, Edward;Cropper, Thomas E.;Allan, Rob
通讯作者:
Allan, Rob
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
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通讯作者:
A. Ellis
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
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通讯作者:
R. Koster
DOI:
--
发表时间:
1966
期刊:
影响因子:
--
作者:
J. Namias
通讯作者:
J. Namias