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(Article of periodic en Anglais - 2014)

Document title

Quantitative estimation of climate change effects on potential evapotranspiration in Beijing during 1951–2010

Authors(s) and Affiliation(s)

LIU H. (1 4) ; LI Y. (1 2) ; JOSEF T. (3) ; ZHANG R. (1) ; HUANG G. (2) ;
(1) College of Water Sciences, Normal Univ., Beijing, CHINE
(2) College of Water Resources and Civil Engineering, China Agricultural Univ., Beijing, CHINE
(3) Inst. of Soil, Water and Environmental Sciences, Agricultural Research Organization, Bet Dagan, ISRAEL
(4) State Key Lab. of Simulation and Regulation of Water Cycle in River Basin, China Inst. of Water resources and Hydropower Research, Beijing, CHINE

Abstract

Here, an attempt has been made to study the climate change and the sensitivity of estimated evapotranspiration to each climatic variable for a semi-arid region of Beijing in North China using data set from 1951 to 2010. Penman-Monteith method was used to calculate reference crop evapotranspiration (ETo). Changes of ETo to each climatic variable was estimated using a sensitivity analysis. Results show that in the past 60 years, mean temperature and vapor pressure deficit (VPD) were significantly increasing, relative humidity and sunshine hours were significantly decreasing, and wind speed greatly oscillated without a significant trend. Total precipitation was significantly decreasing in corn season (from June to September), but it was increasing in wheat season (from October to next May). Sensitivity analysis showed that mean air temperature was the first key factor for ETo change in the past 60 years, followed by relative humidity and sunshine hours; the less sensitivity factors were wind speed, minimum temperature and maximum temperature.

Source

Article of periodic

published at : Journal of geographical sciences. Acta geographica sinica / ISSN 1009-637X

Editor : CHINE

Millesime : 2014, vol. 24, no1 [pp. 93-112]

Bibliographic references : 48 ref.

Collation : 4 fig., 3 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1007/s11442-014-1075-5

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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