GSTDTAP  > 气候变化
DOI10.1175/JCLI-D-17-0515.1
Land-Cover Change and the "Dust Bowl'' Drought in the US Great Plains
Hu, Qi1,2; Torres-Alavez, Jose Abraham2; Van den Broeke, Matthew S.2
2018-06-01
发表期刊JOURNAL OF CLIMATE
ISSN0894-8755
EISSN1520-0442
出版年2018
卷号31期号:12页码:4657-4667
文章类型Article
语种英语
国家USA
英文摘要

The North American Dust Bowl drought during the 1930s had devastating environmental and societal impacts. Comprehending the causes of the drought has been an ongoing effort in order to better predict similar droughts and mitigate their impacts. Among the potential causes of the drought are sea surface temperature (SST) anomalies in the tropical Pacific Ocean and strengthened local sinking motion as a feedback to degradation of the land surface condition leading up to and during the drought. Limitations on these causes are the lack of a strong tropical SST anomaly during the drought and lack of local anomaly in moisture supply to undercut the precipitation in the U.S. Great Plains. This study uses high-resolution modeling experiments and quantifies an effect of the particular Great Plains land cover in the 1930s that weakens the southerly moisture flux to the region. This effect lowers the average precipitation, making the Great Plains more susceptible to drought. When drought occurs, the land-cover effect enhances its intensity and prolongs its duration. Results also show that this land-cover effect is comparable in magnitude to the effect of the 1930s large-scale circulation anomaly. Finally, analysis of the relationship of these two effects suggests that while lowering the precipitation must have contributed to the Dust Bowl drought via the 1930s land-cover effect, the initiation of and recovery from that drought would likely result from large-scale circulation changes, either of chaotic origin or resulting from combinations of weak SST anomalies and other forcing.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000450688200004
WOS关键词CONTERMINOUS UNITED-STATES ; PRECIPITATION ; MODEL ; WRF ; PARAMETERIZATION ; OSCILLATION ; VARIABILITY ; RAINFALL
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/20479
专题气候变化
作者单位1.Univ Nebraska, Sch Nat Resources, Lincoln, NE 68588 USA;
2.Univ Nebraska, Dept Earth & Atmospher Sci, Lincoln, NE 68588 USA
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Hu, Qi,Torres-Alavez, Jose Abraham,Van den Broeke, Matthew S.. Land-Cover Change and the "Dust Bowl'' Drought in the US Great Plains[J]. JOURNAL OF CLIMATE,2018,31(12):4657-4667.
APA Hu, Qi,Torres-Alavez, Jose Abraham,&Van den Broeke, Matthew S..(2018).Land-Cover Change and the "Dust Bowl'' Drought in the US Great Plains.JOURNAL OF CLIMATE,31(12),4657-4667.
MLA Hu, Qi,et al."Land-Cover Change and the "Dust Bowl'' Drought in the US Great Plains".JOURNAL OF CLIMATE 31.12(2018):4657-4667.
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