J4 ›› 2009, Vol. 27 ›› Issue (4): 340-345.

• 论文 • 上一篇    下一篇

石家庄市蒸发皿蒸发量的变化特征及其影响因子分析

韩军彩1,2张秉祥高 祺1,2岳艳霞   

  1. (1.南京信息工程大学,江苏 南京 210044; 2.河北省石家庄市气象局,河北 石家庄 050081)
  • 收稿日期:2009-10-09 修回日期:2009-11-13 出版日期:2010-12-30 发布日期:2009-12-30
  • 作者简介:韩军彩(1968-),女,河北省高邑县人,工程师,主要从事气象预报服务工作.E-mail:han6812@sina.com

Pan Evaporation Variation Characteristic and C limatic  Influencing Factors in Shijiazhuang City

 HAN Jun-Cai1,2, ZHANG Bing-Xiang2, GAO  Qi1,2, YUE Yan-Xia2   

  1. (1.Nanjing University ofInformation Science& Technology, Nanjing210044,China;2.ShijiazhuangMeteorologicalBureau ofHebeiProvince, Shijiazhuang050081,China)
  • Received:2009-10-09 Revised:2009-11-13 Online:2010-12-30 Published:2009-12-30

摘要:

采用累积距平曲线、线性倾向估计法和完全相关系数法,分析了近37a来石家庄市蒸发皿蒸发量及影响因子的变化特征。结果表明:石家庄市年蒸发量减少趋势显著,4季中,春季蒸发量的减少速率最大,其次为夏季和秋季,冬季减少速率最小,年蒸发量的减少主要体现在春季和夏季。全年和4季蒸发量与日照时数、平均气温日较差、平均风速和平均地表温度正相关,与平均相对湿度负相关。石家庄市蒸发量减少的主要原因是日照时数和平均气温日较差的减小,其次是平均风速和平均地表温度的下降。

关键词: 蒸发皿蒸发量, 影响因子, 变化特征

Abstract:

The variation characteristics of the pan evaporation and its climatic influencing factors in Shijiazhuang city in the last37 years are analyzed in this study by using themethods of cumulative anomaly and linear trendency estimation and complete correlation coefficient. The results show that the annualpan evaporation presented obviously decreasing trend, andmost significantly decrease occurred in spring, then in summer and autumn. The pan evaporation in a year and differentseasons has a positive correlationwith sunshine duration, average temperature daily range, averagewind speed and average land surface temperature, buta negative correlationwith average humidity. Themajor reason ofpan evaporation decrease in Shijiazhuang city is the decrease of sunshine duration and average temperature daily range, and the second is the decrease of averagewind speed and average land surface temperature.

Key words: variation characteristics, pan evaporation, climatic influencing factors

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