Plateau Meteorology

Plateau Meteorology >

2018 , Vol. 37 >Issue 4: 1017 - 1024

DOI: https://doi.org/10.7522/j.issn.1000-0534.2018.00006

Comparative Analysis of Pan Evaporation Trends between the Summer Monsoon Transition Region and Other Regions of China

  • YANG Siqi ,
  • ZHANG Qiang ,
  • XI Xiaoxia ,
  • QIAO Liang
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  • College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, Gansu, China;Institute of Arid Meteorology, CMA, Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province; Key Open Laboratory of Arid Climatic Change and Disaster Reduction of China Meteorological Administration, Lanzhou 730020, Gansu, China;Gansu Provincial Meteorological Bureau, Lanzhou 730020, Gansu, China;Gansu Provincial Meteorological Information and Technic Support and Equipment Center, Lanzhou 730020, Gansu, China

Received date: 2017-09-14

  Online published: 2018-08-28

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Abstract

In this paper, Nanchang station, Dingxi station and Urumqi station were taken as representative stations of the summer monsoon region, the summer monsoon transition region and non-summer monsoon region. Based on the conventional observation data of Nanchang station, Dingxi station and Urumqi station from 1961 to 2010, the pan evaporation trends in different regions were compared and the reasons for their differences were analyzed. The results show that the pan evaporation trends varied greatly in different regions. The tendency rates of pan evaporation in Dingxi, Nanchang and Urumqi are 50.3, -150.7 and -206.1 mm·(10a)-1, respectively. Besides, by analyzing the sensitivity of meteorological factors, it was found that the pan evaporation is sensitive with different meteorological factors in different regions. In addition, combining the trends analysis and sensitivity analysis of the meteorological factors, the main factors that cause the differences of pan evaporation trend in different regions are annual precipitation, average low cloud cover and average wind speed. Due to the latitude that the north edge of the monsoon reached was lower and lower in recent years, the trend of precipitation, average low cloud cover and average wind speed in monsoon transition zone are contrary with these in other regions of China. Thus, the pan evaporation trend in monsoon transition zone are opposite to the pan evaporation trend in other regions of China.

Key words： The monsoon transiti; pan evaporation; pensitivity analysis; impact factors

Cite this article

YANG Siqi , ZHANG Qiang , XI Xiaoxia , QIAO Liang . Comparative Analysis of Pan Evaporation Trends between the Summer Monsoon Transition Region and Other Regions of China[J]. Plateau Meteorology, 2018 , 37(4) : 1017 -1024 . DOI: 10.7522/j.issn.1000-0534.2018.00006

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