DOI: 10.5194/hess-23-2525-2019
论文题名: The role of land and ocean evaporation on the variability of precipitation in the Yangtze River valley
作者: Fremme A. ; Sodemann H.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2019
卷: 23, 期: 6 起始页码: 2525
结束页码: 2540
语种: 英语
Scopus关键词: Atmospheric thermodynamics
; Oceanography
; Precipitation (meteorology)
; Weather forecasting
; Atmosphere-ocean system
; East Asian monsoon
; European centre for medium-range weather forecasts
; Interannual variability
; Intraseasonal variations
; Moisture sources
; Particle dispersion model
; Precipitation variability
; Moisture
; climatology
; evaporation
; land-atmosphere interaction
; land-sea interaction
; monsoon
; precipitation (climatology)
; weather forecasting
; China
; Yangtze River
英文摘要: The Yangtze River valley (YRV) experiences large intraseasonal and interannual precipitation variability, which is mainly due to East Asian monsoon influence. The East Asian monsoon is caused by interaction of many processes in the coupled land-atmosphere-ocean system. To better understand YRV precipitation variability in this complex system, we have studied the precipitation moisture sources and their connection to YRV precipitation. We obtained the moisture sources by using the European Centre for Medium-Range Weather Forecasts' (ECMWF) ERA-Interim reanalysis dataset, the FLEXible PARTicle dispersion model (FLEXPART), and the WaterSip moisture source diagnostic. The variability of moisture sources reflects the variability of YRV precipitation. Intraseasonal variations of moisture sources include a shift of the most important source regions as the monsoon progresses. Interannual variability of the moisture sources shows that sources which are less important climatologically are closely connected to variations of the driest and wettest years. Our results show that land directly contributes 58% of moisture for YRV precipitation during 1980-2016, whereas the ocean contributes 42% in direct transport. While the importance of the ocean as a moisture source is often emphasized, our results underscore the importance of the process of continental recycling and the role of land moisture sources. © 2019 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162961
Appears in Collections: 气候变化与战略
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作者单位: Fremme, A., Geophysical Institute, University of Bergen, Bjerknes Centre for Climate Research, Bergen, Norway; Sodemann, H., Geophysical Institute, University of Bergen, Bjerknes Centre for Climate Research, Bergen, Norway
Recommended Citation:
Fremme A.,Sodemann H.. The role of land and ocean evaporation on the variability of precipitation in the Yangtze River valley[J]. Hydrology and Earth System Sciences,2019-01-01,23(6)