气候变化领域集成服务门户(CCPortal): The role of land and ocean evaporation on the variability of precipitation in the Yangtze River valley

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DOI	10.5194/hess-23-2525-2019
	The role of land and ocean evaporation on the variability of precipitation in the Yangtze River valley
	Fremme A.; Sodemann H.
发表日期	2019
ISSN	1027-5606
起始页码	2525
结束页码	2540
卷号	23 期号:6
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).
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
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159671
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
推荐引用方式 GB/T 7714	Fremme A.,Sodemann H.. The role of land and ocean evaporation on the variability of precipitation in the Yangtze River valley[J],2019,23(6).
APA	Fremme A.,&Sodemann H..(2019).The role of land and ocean evaporation on the variability of precipitation in the Yangtze River valley.Hydrology and Earth System Sciences,23(6).
MLA	Fremme A.,et al."The role of land and ocean evaporation on the variability of precipitation in the Yangtze River valley".Hydrology and Earth System Sciences 23.6(2019).