| DOI: | 10.1007/s00382-015-2636-8
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| Scopus记录号: | 2-s2.0-84957442931
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| 论文题名: | Global semi-arid climate change over last 60 years |
| 作者: | Huang J.; Ji M.; Xie Y.; Wang S.; He Y.; Ran J.
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| 刊名: | Climate Dynamics
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| ISSN: | 9307575
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| 出版年: | 2016
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| 卷: | 46, 期:2017-03-04 | | 起始页码: | 1131
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| 结束页码: | 1150
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| 语种: | 英语
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| 英文关键词: | Aridity index
; Climate change
; Expansion
; Semi-arid
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| 英文摘要: | This study analyzes areal changes and regional climate variations in global semi-arid regions over 61 years (1948–2008) and investigates the dynamics of global semi-arid climate change. The results reveal that the largest expansion of drylands has occurred in semi-arid regions since the early 1960s. This expansion of semi-arid regions accounts for more than half of the total dryland expansion. The area of semi-arid regions in the most recent 15 years studied (1990–2004) is 7 % larger than that during the first 15 years (1948–1962) of the study period; this expansion totaled 0.4 × 106 and 1.2 × 106 km2 within the American continents and in the Eastern Hemisphere, respectively. Although semi-arid expansion occurred in both regions, the shifting patterns of the expansion are different. Across the American continents, the newly formed semi-arid regions developed from arid regions, in which the climate became wetter. Conversely, in the continental Eastern Hemisphere, semi-arid regions replaced sub-humid/humid regions, in which the climate became drier. The climate change in drying semi-arid regions over East Asia is primarily dominated by a weakened East Asian summer monsoon, while the wetting of semi-arid regions over North America is primarily controlled by enhanced westerlies. © 2015, The Author(s). |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/53846
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| Appears in Collections: | 过去全球变化的重建
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作者单位: | Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, Gansu, China
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| Recommended Citation: | |
Huang J.,Ji M.,Xie Y.,et al. Global semi-arid climate change over last 60 years[J]. Climate Dynamics,2016-01-01,46(2017-03-04)
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