globalchange  > 气候减缓与适应
DOI: 10.1029/2017JD028246
Scopus记录号: 2-s2.0-85047624864
论文题名:
Spring Land Surface and Subsurface Temperature Anomalies and Subsequent Downstream Late Spring-Summer Droughts/Floods in North America and East Asia
作者: Xue Y.; Diallo I.; Li W.; David Neelin J.; Chu P.C.; Vasic R.; Guo W.; Li Q.; Robinson D.A.; Zhu Y.; Fu C.; Oaida C.M.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:10
起始页码: 5001
结束页码: 5019
语种: 英语
英文关键词: drought ; East Asia ; flood ; land surface temperature ; North America ; subsurface temperature
英文摘要: Sea surface temperature (SST) variability has been shown to have predictive value for land precipitation, although SSTs are unable to fully predict intraseasonal to interannual hydrologic extremes. The possible remote effects of large-scale land surface temperature (LST) and subsurface temperature (SUBT) anomalies in geographical areas upstream and closer to the areas of drought/flood have largely been ignored. Here evidence from climate observations and model simulations addresses these effects. Evaluation of observational data using Maximum Covariance Analysis identifies significant correlations between springtime 2-m air temperature (T2 m) cold (warm) anomalies in both the western U.S. and the Tibetan Plateau and downstream drought (flood) events in late spring/summer. To support these observational findings, climate models are used in sensitivity studies, in which initial LST/SUBT anomaly is imposed to produce observed T2 m anomaly, to demonstrate a causal relationship for two important cases: between spring warm T2 m/LST/SUBT anomalies in western U.S. and the extraordinary 2015 flood in Southern Great Plains and adjacent regions and between spring cold T2 m/LST/SUBT anomalies in the Tibetan Plateau and the severe 2003 drought south of the Yangtze River region. The LST/SUBT downstream effects in North America are associated with a large-scale atmospheric stationary wave extending eastward from the LST/SUBT anomaly region. The effects of SST in these cases are also tested and compared with the LST/SUBT effects. These results suggest that consideration of LST/SUBT anomalies has the potential to add value to intraseasonal prediction of dry and wet conditions, especially extreme drought/flood events. The results suggest the importance of developing land data and models capable of preserving observed soil memory. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113835
Appears in Collections:气候减缓与适应

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作者单位: Department of Geography, University of California Los Angeles, Los Angeles, CA, United States; Department of Atmospheric and Oceanic Sciences, UCLA, Los Angeles, CA, United States; Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, Nanjing, China; Joint International Research Laboratory of Atmospheric and Earth System Sciences, Nanjing, China; Naval Ocean Analysis and Prediction Laboratory, Department of Oceanography, Naval Postgraduate School, Monterey, CA, United States; I. M. Systems Group, Inc., Environmental Modeling Center/National Center for Environmental Prediction, NOAA, College Park, MD, United States; Environmental Modeling Center/National Center for Environmental Prediction, NOAA, College Park, MD, United States; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Department of Geography, Rutgers University, Piscataway, NJ, United States

Recommended Citation:
Xue Y.,Diallo I.,Li W.,et al. Spring Land Surface and Subsurface Temperature Anomalies and Subsequent Downstream Late Spring-Summer Droughts/Floods in North America and East Asia[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(10)
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