中国农业气象 ›› 2009, Vol. 30 ›› Issue (S1): 64-67.

• 论文 • 上一篇    下一篇

吉首市16年降水pH值变化特征及成因分析

欧爱松;饶雅;欧维;邵剑光;   

  1. 湖南吉首市气象局;湘西自治州气象局;
  • 出版日期:2009-12-15 发布日期:2009-12-15

Analysis on Change and Cause of pH Values of Precipitation in Jishou City Last 16 years

OU Ai-song1,RAO Ya1,OU Wei2,SHAO Jian-guang1(1.Jishou Meteorological Bureau,Hunan Province,Jishou 416000,China;2.Southern Hunan Autonomous Prefecture Meteorological Bureau,Jishou 416000)   

  • Online:2009-12-15 Published:2009-12-15

摘要: 运用吉首市气象局1992-2007年16a降水pH值进行年、季、月变化特征分析,与同期气象资料对比分析得出:吉首市年降水pH值,随着年份的推移,降水偏酸的状况没有明显改善;冬、春季降水pH值低,酸雨频率偏高;降水pH值与阴天日数、风速、降水强度、降水持续时间、地形、城市发展有明显关系。并提出了通过工业脱硫、降尘、节能减排等措施来提高降水pH值,减少酸雨影响的措施。研究结果可为提高城市空气质量、改善居住环境提供参考。

关键词: 降水pH值, 变化特征, 酸雨成因

Abstract: Using the 16 years' pH values of precipitation to analyze the changing characteristics of year,season and month in Jishou during 1992-2007 and comparing with meteorology data in the same period,the results showed that annual pH values of precipitation in Jishou,as the year goes on,the situation of bias acid precipitation had not improved obviously.pH values of precipitation were low and the frequency of acid rain was high in winter and spring.pH values of precipitation had clearly relations with the cloudy days,wind speed,rainfall intensity,rainfall duration,terrain and urban development.Some measures,such as,industry desulfurization,dustfall and energy saving and emission reduction were proposed to increase the pH values of precipitation and reduce the impacts of acid rain.The results could provide a reference to improving the air quality of the city and the living environment.

Key words: pH values of precipitation, Change characteristics, Causes of acid rain