Next Article in Journal
Local Climate Classification and Dublin’s Urban Heat Island
Previous Article in Journal
Use of a Simple GIS-Based Model in Mapping the Atmospheric Concentration of γ-HCH in Europe
Article Menu

Export Article

Open AccessArticle
Atmosphere 2014, 5(4), 737-754; doi:10.3390/atmos5040737

Spatial and Decadal Variations in Potential Evapotranspiration of China Based on Reanalysis Datasets during 1982–2010

1
State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, No.19 Xinjiekou Street, Beijing 100875, China
2
Ministry of Environmental Protection, Environmental Satellite Center, East Road of Yongfeng Base, Beijing 100094, China
3
College of Resource Environment and Tourism, Capital Normal University, No.105 North Road, Beijing 100048, China
4
College of Earth Sciences, Chengdu University of Technology, No.1 Erxian Bridge Road, Chengdu 610059, China
*
Author to whom correspondence should be addressed.
Received: 20 May 2014 / Revised: 17 September 2014 / Accepted: 19 September 2014 / Published: 17 October 2014
View Full-Text   |   Download PDF [3805 KB, uploaded 17 October 2014]   |  

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. View Full-Text
Keywords: potential evapotranspiration; pan evaporation; incident solar radiation; vapor pressure deficit; wind speed; China potential evapotranspiration; pan evaporation; incident solar radiation; vapor pressure deficit; wind speed; China
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Yao, Y.; Zhao, S.; Zhang, Y.; Jia, K.; Liu, M. Spatial and Decadal Variations in Potential Evapotranspiration of China Based on Reanalysis Datasets during 1982–2010. Atmosphere 2014, 5, 737-754.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Atmosphere EISSN 2073-4433 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top