The changes of potential evaportranspiration over Yarlung Zangbo River Basin during 1961-2010

  • Climatic Center of The Tibet Autonomous Region, Lhasa 850000, China

Received date: 2012-10-10

  Revised date: 2013-05-25

  Online published: 2013-09-05

Supported by

Foundation Climate change special fund from China Meteorological Administration, No.CCSF2011-17


Based on the daily temperature and air pressure datasets recorded by 6 observation stations in the Yarlung Zangbo River Basin during the period 1961-2010, the monthly, seasonal and annual PE (potential evapotranspiration) at this basin was calculated by using Penman-Monteith method, and the changes of PE were analyzed in this paper. The main results were obtained as follows: in terms of annual, wet-seasonal and dry-seasonal variations, there was a weak increasing trend of PE at a rate of less than 3.00 mm/10a. The inter-decadal variation shows that annual PE experienced an increasing process from the 1960s to 1980s, followed by a decreasing trend. The abrupt change of PE was observed in 1981.

Cite this article

YANG Zhigang, TANG Xiaoping, LU Hongya, MA Pengfei, HONG Jianchang . The changes of potential evaportranspiration over Yarlung Zangbo River Basin during 1961-2010[J]. Acta Geographica Sinica, 2013 , 68(9) : 1263 -1268 . DOI: 10.11821/dlxb201309009


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