Using a Gaussian Function to Describe the Seasonal Courses of Monthly Precipitation and Potential Evapotranspiration across the Yellow River Basin, China

doi:10.1175/JHM-D-19-0019.1

	Using a Gaussian Function to Describe the Seasonal Courses of Monthly Precipitation and Potential Evapotranspiration across the Yellow River Basin, China
	Wang, Yaqin 1,2; Luo, Yi 1,2,3; Shafeeque, Muhammad 1,2
刊名	JOURNAL OF HYDROMETEOROLOGY
	2019-11-01
卷号	20 期号:11 页码:2185-2201
关键词	Precipitation Algorithms Data processing Data quality control
ISSN号	1525-755X
DOI	10.1175/JHM-D-19-0019.1
通讯作者	Luo, Yi(luoyi.cas@hotmail.com)
英文摘要	Seasonal variations in precipitation (P) and potential evapotranspiration (ET0) are critical for regional hydrometeorological studies and water resource management. The sinusoidal function is widely used to describe the seasonal pattern of P and ET0. However, high errors occur either in the arid places or in places with hyperseasonal precipitation. These limitations are intrinsic properties of the sinusoidal climate descriptor and remain a barrier to provide insight into regional water-energy partitions and hydrologic similarity and predictability. In this study, we used a Gaussian framework as an alternative to describe seasonal variations in P and ET0 regimes in the Yellow River basin (YRB). The results show that the Gaussian framework provides a good approximation to the seasonal pattern of P and has a strong regional applicability for reproducing the monthly P and ET0. This allows us to assess the climate seasonality characterizing the regional balance between water supply and energy availability using delta P, delta ET0, and aridity index. The climate seasonality indicates that the balance between water supply and energy availability has a switch in about 32% of the grid cells during the seasonal cycle from 1982 to 2015. These grid cells are mostly located in regions with average annual precipitation above 550 mm. In the northwest region of the YRB, which has a dry climate, the amount of potential evapotranspiration always exceeds the precipitation. We argue that the Gaussian function provides a quantitative conceptual framework for accurate assessment of regional water supply and energy availability and offers a penetrating insight into hydrometeorology.
资助项目	National Key Research and Development Program[2016YFC0501603] ; National Natural Science Foundation of China[41390461]
WOS关键词	ANNUAL WATER-BALANCE ; LOESS PLATEAU REGION ; RAINFALL SEASONALITY ; CLIMATE SEASONALITY ; VEGETATION DYNAMICS ; WORLD MAP ; CATCHMENT ; STREAMFLOW ; RUNOFF ; IMPACT
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER METEOROLOGICAL SOC
WOS记录号	WOS:000496133300001
资助机构	National Key Research and Development Program ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/132119]
专题	中国科学院地理科学与资源研究所
通讯作者	Luo, Yi
作者单位	1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecol & Environm Cent Asia, Urumqi, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yaqin,Luo, Yi,Shafeeque, Muhammad. Using a Gaussian Function to Describe the Seasonal Courses of Monthly Precipitation and Potential Evapotranspiration across the Yellow River Basin, China[J]. JOURNAL OF HYDROMETEOROLOGY,2019,20(11):2185-2201.
APA	Wang, Yaqin,Luo, Yi,&Shafeeque, Muhammad.(2019).Using a Gaussian Function to Describe the Seasonal Courses of Monthly Precipitation and Potential Evapotranspiration across the Yellow River Basin, China.JOURNAL OF HYDROMETEOROLOGY,20(11),2185-2201.
MLA	Wang, Yaqin,et al."Using a Gaussian Function to Describe the Seasonal Courses of Monthly Precipitation and Potential Evapotranspiration across the Yellow River Basin, China".JOURNAL OF HYDROMETEOROLOGY 20.11(2019):2185-2201.