globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2568
论文题名:
Southward shift of the northern tropical belt from 1945 to 1980
作者: Bronnimann S.; Fischer A.M.; Rozanov E.; Poli P.; Compo G.P.; Sardeshmukh P.D.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2015
卷: 8, 期:12
起始页码: 969
结束页码: 974
语种: 英语
Scopus关键词: climate variation ; data set ; Hadley cell ; sea surface temperature ; seasonal variation ; subtropical region ; Atlantic Ocean ; Europe
英文摘要: Changes in the position and width of the tropical belt are societally and ecologically relevant, because they are associated with shifts of the subtropical dry zones. The tropical belt has widened since about 1980, but little is known about its earlier variability. Here we analyse historical surface and upper-level observations, three global reanalysis data sets, and a reconstruction of total column ozone, to show that the northern tropical edge retracted from 1945 to 1980, while the northern Hadley cell shifted southwards in both summer and winter. We present chemistry-climate model simulations that reproduce the retraction and southward shift. We find that retraction of the tropical belt was largely due to cooling sea-surface temperatures north of the Equator and warming south of the Equator, most prominently over the Atlantic. Substantial hydroclimatic anomalies such as European droughts of the 1940s and 1950s and the Sahel drought of the 1970s were associated with this shift of the Hadley cell. Our results suggest that multidecadal changes in the position of the northern Hadley cell are an important component of climate variability. © 2015 Macmillan Publishers Limited.
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被引频次[WOS]:36   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106122
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland; Institute of Geography, University of Bern, Bern, Switzerland; Federal Office of Meteorology and Climatology MeteoSwiss, Zurich, Switzerland; Department of Physical-Meteorological Observatory, World Radiation Center, Davos, Switzerland; Institute for Atmospheric and Climate Sciences, ETH Zurich, Zurich, Switzerland; European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Physical Sciences Division, Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO, United States

Recommended Citation:
Bronnimann S.,Fischer A.M.,Rozanov E.,et al. Southward shift of the northern tropical belt from 1945 to 1980[J]. Nature Geoscience,2015-01-01,8(12)
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