地理学报 ›› 1978, Vol. 45 ›› Issue (2): 102-111.doi: 10.11821/xb197802002

• 论文 • 上一篇    下一篇

我国最大可能蒸发量的计算和分布

高国栋, 陆渝蓉, 李怀瑾   

  1. 南京大学气象系气候组
  • 出版日期:1978-07-15 发布日期:1978-07-15

THE CALCULATION AND DISTRIBUTION OF THE MAXIMUM POSSIBLE EVAPORATION IN CHINA

Gao Guo-dong, Lu Yu-yong, Li Huai-jin   

  1. Department of Meteorology, Nanking University
  • Online:1978-07-15 Published:1978-07-15

摘要: 最大可能蒸发量又称蒸发力,是指下垫面足够湿润条件下,水分保持充分供应的蒸发量。在计算下垫面实际蒸发量中往往应用最大可能蒸发量这一数值。

关键词: 下垫面, 积温法, 空气饱和差, 蒸发力, 蒸发量, 最大可能, 月份, 辐射平衡值, 和分布, 年变幅

Abstract: In this paper the various methods used for calculating the maximum possible evaporation (M. P. B.) are discussed. The M. P. E. of more than 300 stations in China, calculated with Budyko’s formula, using the component values of radiation and heat balance calculated by the authors and the other related climatological data, is analysed.It is found that both the time and space variations of M. P. E. in China are chiefly determined by the thermal condition and moisture condition. They are minimum in winter and maximum in summer. In the Eastern China the M. P. E. value dicreases with latitude from 1000 mm in south to 500 mm in Northeast. In the Western China, there is a low value region with a minimum value ’about 500mm around the Tibetan plateau, and a high value region with a maximum value about 1200 mm around the Tarim Basin in Sinkiang province. The annual range of the M. P. E. is quite small along the southeastern coast, only about 70 mm, but more than 130 mm, in the Northwestern China.