干旱气象

• 论文 • 上一篇    下一篇

华北及临近海域夏季不同降雨量下气溶胶光学厚度与云滴有效半径的关系

万灵1,3,姚凤梅1,张佳华2   

  1. 1.中国科学院大学,中国科学院计算地球动力学重点实验室,北京100049;2.中国科学院遥感与数字地球
    研究所,中国科学院数字地球重点实验室,北京100094;3.福建省气象服务中心,福建福州350001
  • 出版日期:2016-08-31 发布日期:2016-08-31
  • 作者简介:万灵(1989- ),男,硕士研究生,主要从事气候变化研究. E-mail:wanling.1989@qq.com
  • 基金资助:

    中国科学院百人计划项目(Y24002101A)、中国科学院1-3-5创新培育项目(Y3ZZ15101A)和国家自然科学基金项目(31571565)共同资助

Relationship Between Aerosol Optical Depth and Cloud Effective Radius Under Different
 Rainfall Conditions in Summer over North China and Its Adjacent Sea Area

WAN Ling1, YAO Fengmei1, ZHANG Jiahua2   

  1. 1. University of Chinese Academy of Sciences, Key Laboratory of Computational Geodynamics,
     Beijing 100049, China;2. Institute of Remote Sensing and Digital Earth of Chinese Academy
     of Sciences, Key Laboratory of Digital Earth Science, CAS, Beijing 100094, China;
    3. Meteorological Service Center of Fujian Province, Fuzhou 350001, China
  • Online:2016-08-31 Published:2016-08-31
  • Contact: 姚凤梅,副教授,主要从事全球变化与遥感应用研究. E-mail:yaofm@ucas.ac.cn

摘要:

利用2008—2012年MODIS和TRMM卫星遥感数据产品逐日资料,分析华北地区及临近海域气溶胶光学厚度的月变化,以及夏季不同降雨量下气溶胶光学厚度与云滴有效半径的关系。结果表明:华北地区及邻近海域气溶胶光学厚度呈明显的季节性变化,陆地上夏季最大、冬季最小,海洋上春季最大、秋季最小;海洋上的气溶胶光学厚度小于陆地。陆地上,夏季气溶胶光学厚度与水云云滴有效半径呈显著正相关,在海洋上二者呈显著负相关,且相关性随降雨量的增加均增大。陆地上,夏季气溶胶光学厚度与冰云云滴有效粒子半径在小雨下呈显著负相关,在中雨和大雨下呈正相关;海洋上,气溶胶光学厚度和冰云有效粒子半径呈显著负相关,且相关性随降雨量的增加而减小。

关键词: AOD, 云滴有效半径, 降雨量, MODIS, TRMM

Abstract:

Based on the daily aerosol optical depth and cloud effective radius from MODIS and the daily precipitaiton from TRMM during 2008-2012, the monthly variation of aerosol optical depth (AOD) was analyzed over North China and its adjacent sea area, and the relationships between AOD and cloud effective radius under different rainfall condition in summer were researched. The results showed that the seasonal changes of AOD were obvious over North China and its adjacent sea area, the maximum and minimum AOD appeared in summer and winter over the land, while they occurred in spring and autumn over the ocean, respectively. And the monthly AOD over the ocean was less than that over the land during 2008-2012. The relation between AOD and cloud effective radius in summer over North China and its adjacent sea area was significantly different. For water cloud, their correlation was significantly positive over the land in summer, AOD could promote the increase of water cloud effective radius, while it was significantly negative over the ocean, and the correlation all enhanced with precipitation increase. As for ice cloud, AOD was negative related with cloud effective radius for small rain but postive for moderate rain and heavy rain in summer over the land, however the relation presented an obvious negative over the ocean, and the correlation decreased with precipatation increase.

Key words:  aerosol optical depth, cloud effective radius, precipitation, MODIS, TRMM

中图分类号: