globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-12-00244.1
Scopus记录号: 2-s2.0-84878151504
论文题名:
The influence of atlantic tropical cyclones on drought over the Eastern United States (1980-2007)
作者: Kam J.; Sheffield J.; Yuan X.; Wood F.E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期:10
起始页码: 3067
结束页码: 3086
语种: 英语
Scopus关键词: Drought duration ; Drought intensities ; Drought severity ; Hydrologic models ; North american land data assimilation systems ; Regional scale ; Tropical cyclone ; Variable infiltration capacities ; Hurricanes ; Soil moisture ; Water resources ; Drought ; data assimilation ; drought ; hydrological modeling ; land surface ; precipitation assessment ; precipitation intensity ; seasonal variation ; soil moisture ; tropical cyclone ; Atlantic Ocean ; United States
英文摘要: To assess the influence of Atlantic tropical cyclones (TCs) on the eastern U.S. drought regime, the Variable Infiltration Capacity (VIC) land surface hydrologic model was run over the eastern United States forced by the North American Land Data Assimilation System phase 2 (NLDAS-2) analysis with and without TCrelated precipitation for the period 1980-2007.Adrought was defined in terms of soil moisture as a prolonged period below a percentile threshold. Different duration droughts were analyzed-short term (longer than 30 days) and long term (longer than 90 days)-as well as different drought severities corresponding to the 10th, 15th, and 20th percentiles of soil moisture depth. With TCs, droughts are shorter in duration and of a lesser spatial extent. Tropical cyclones variously impact soil moisture droughts via late drought initiation, weakened drought intensity, and early drought recovery. At regional scales, TCs decreased the average duration of moderately severe short-term and long-term droughts by less than 4 (10% of average drought duration per year) and more than 5 (15%) days yr-1, respectively. Also, they removed at least two short-term and one longterm drought events over 50% of the study region. Despite the damage inflicted directly by TCs, they play a crucial role in the alleviation and removal of drought for some years and seasons, with important implications for water resources and agriculture. © 2013 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51912
Appears in Collections:气候变化事实与影响

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作者单位: Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ, United States

Recommended Citation:
Kam J.,Sheffield J.,Yuan X.,et al. The influence of atlantic tropical cyclones on drought over the Eastern United States (1980-2007)[J]. Journal of Climate,2013-01-01,26(10)
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