Decreasing reference evapotranspiration in a warming climate - A case of Changjiang (Yangtze) River catchment during 1970-2000

被引：46

作者：

Chong-Yu Xu

Lebing Gong

Jiang Tong

Deliang Chen

机构：

[1] Univ Oslo, Dept Geosci, NO-0316 Oslo, Norway

[2] Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China

[3] Uppsala Univ, Dept Earth Sci, S-75236 Uppsala, Sweden

[4] Univ Gothenburg, Dept Earth Sci, Gothenburg, Sweden

[5] China Meterol Adm, Lab Climate Studies, Natl Climate Ctr, Beijing 100081, Peoples R China

来源：

ADVANCES IN ATMOSPHERIC SCIENCES | 2006年 / 23卷 / 04期

关键词：

reference evapotranspiration; Penman-Monteith method; temporal trend; Changjiang (Yangtze) River catchment; China;

D O I：

10.1007/s00376-006-0513-4

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

This study deals with temporal trends in the Penman-Monteith reference evapotranspiration estimated from standard meteorological observations, observed pan evaporation, and four related meteorological variables during 1970-2000 in the Yangtze River catchment. Relative contributions of the four meteorological variables to changes in the reference evapotranspiration are quantified. The results show that both the reference evapotranspiration and the pan evaporation have significant. decreasing trends in the upper, the middle as well as in the whole Changjiang (Yangtze) River catchment at the 5% significance level, while the air temperature shows a significant increasing trend. The decreasing trend detected in the reference evapotranspiration can be attributed to the significant decreasing trends in the net radiation and the wind speed.

引用

页码：513 / 520

页数：8

共 21 条

[1]

ALLEN RG, 1998, 56 AO FAO

[2]

[Anonymous], 1950, SCSTP 96

[3] Evaporation and potential evapotranspiration in India under conditions of recent and future climate change [J].