Spatial and Decadal Variations in Potential Evapotranspiration of China Based on Reanalysis Datasets during 1982

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Yao, Yunjun, Zhao, Shaohua, Zhang, Yuhu, Jia, Kun, Liu, Meng. Spatial and Decadal Variations in Potential Evapotranspiration of China Based on Reanalysis Datasets during 1982–2010. Atmosphere, 2014, 5(4):737-754. doi:10.3390/atmos5040737

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Type Of Reference	JOUR
Title	Spatial and Decadal Variations in Potential Evapotranspiration of China Based on Reanalysis Datasets during 1982–2010
Authors	Yao, Yunjun\| Zhao, Shaohua\| Zhang, Yuhu\| Jia, Kun\| Liu, Meng\|
Secondary Title	Atmosphere
Abstract	Potential evapotranspiration (PET) is an important indicator of atmospheric evaporation demand and has been widely used to characterize hydrological change. However, sparse observations of pan evaporation (EP) prohibit the accurate characterization of the spatial and temporal patterns of PET over large spatial scales. In this study, we have estimated PET of China using the Penman-Monteith (PM) method driven by gridded reanalysis datasets to analyze the spatial and decadal variations of PET in China during 1982–2010. The results show that the estimated PET has decreased on average by 3.3 mm per year (p < 0.05) over China during 1982–1993, while PET began to increase since 1994 by 3.4 mm per year (p < 0.05). The spatial pattern of the linear trend in PET of China illustrates that a widely significant increasing trend in PET appears during 1982–2010 in Northwest China, Central China, Northeast China and South China while there are no obvious variations of PET in other regions. Our findings illustrate that incident solar radiation (Rs) is the largest contributor to the variation of PET in China, followed by vapor pressure deficit (VPD), air temperature (Tair) and wind speed (WS). However, WS is the primary factor controlling inter-annual variation of PET over Northwest China.
Date	2014/10/17/
Year	2014
DOI	10.3390/atmos5040737
Database Provider	www.mdpi.com
volume	5
Issue Number	4
Start Page	737
Language	en
Url	http://www.mdpi.com/2073-4433/5/4/737
Access Date	2016/07/12/05:35:59
Keywords	China\| incident solar radiation\| pan evaporation\| potential evapotranspiration\| vapor pressure deficit\| Wind speed\|
file_attachments2	http://www.mdpi.com/2073-4433/5/4/737/htm
notes	<p>7a35329c-c53f-4267-aa07-e0037d913a21</p>
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Spatial and Decadal Variations in Potential Evapotranspiration of China Based on Reanalysis Datasets during 1982–2010

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