基于美国AMF寿县观测的云特性研究
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家高技术研究发展计划项目(2007AA061901);江苏省青蓝工程资助项目;江苏高校优势学科建设工程资助项目


Cloud property analysis by using DOE AMF measurements in Shouxian of China
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 文章评论
  • |
  • 资源附件
    摘要:

    美国能源部大气辐射观测计划移动观测ARMAMF(atmospheric radiation measurement mobile facility)2008年首次在我国寿县开展综合观测,为研究云特性提供了很好的资料平台。本文在此次云雷达等观测资料基础上,研究了寿县秋末冬初云高、云厚、云量及其辐射特性,结果发现,寿县有76.3%的观测日有云出现,54.0%的观测时间有云覆盖,中云(以下简称M云)和高云(以下简称H云)出现频率占全部云系的76.7%,天气系统对寿县云系形成有较大影响;云底高度大于3km的降水性云(以下简称P云)出现频率占全部P云的67.7%,是云底高度小于3kmP云的5.3倍,发生在下午的降水占全部P云的47.8%,气溶胶可能对P云的这种分布有较大影响;云和气溶胶减少地面短波辐射的日均值达-99.1W/m2,其中气溶胶减少约占25.1%。不同高度和厚度云对地面辐射通量的影响有较大差异,P云产生最大的冷却效应(-201.9W/m2),厚度小于2km的H云对地面辐射通量的减少量最少(-32.9W/m2)。另外,用地面单点云辐射观测与中分辨率成像光谱仪MODIS(moderate resolution imaging spectroradiometer)资料估计结果对比发现,两种资料有较大差异,差异可达-1.9~-36.9W/m2

    Abstract:

    Cloud is critical in understanding the current climate and it plays an important role in simulating potential climate change.The U.S.Department of Energy(DOE) atmospheric radiation measurement (ARM) AMF explored field campaigns that took place in Shouxian in the east of China for the first time in 2008.Based on the observational data,the study presents some preliminary results like cloud height and cloud thickness as well as cloud’s radiative features in Shouxian during late autumn and early winter.It was found that the occurrence of clouds took 76.3% of the observational days and 54.0% of the observational time.Middle cloud(M) and high cloud(H) occupied 76.7% of all the clouds.The weather system is the dominant modulator in cloud formation in Shouxian.In addition,there were more middle clouds(M) transforming into precipitation cloud(P) than low(L) and high cloud(H),which is about 67.7%.Precipitation occurring in the afternoon took 47.8% of all the precipitation cloud.Aerosol affected the distribution of precipitation cloud obviously.The reduced daily mean shortwave radiation caused by the cloud and aerosol was about-99.1 W/m2 with aerosol contributing 25.1% of the value.We quantitatively estimate there are obvious differences in the surface radiation budget caused by the clouds of different heights and thicknesses.P cloud produces the largest cooling effect (-201.9 W/m2) while the thickness of less than 2 km H cloud has the smallest cooling effect (-32.9 W/m2).There are evident differences between ground site observation and MODIS data estimation,whose value could be-1.9—-36.9 W/m2.

    参考文献
    相似文献
    引证文献
引用本文

邱玉珺,杨会文,倪婷,方凯,汪才军,2012.基于美国AMF寿县观测的云特性研究[J].大气科学学报,35(1):80-86. QIU Yu-jun, YANG Hui-wen, NI Ting, FANG Kai, WANG Cai-jun,2012. Cloud property analysis by using DOE AMF measurements in Shouxian of China[J]. Trans Atmos Sci,35(1):80-86.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2011-09-12
  • 最后修改日期:2011-11-15
  • 录用日期:
  • 在线发布日期:
  • 出版日期:

地址:江苏南京宁六路219号南京信息工程大学    邮编:210044

联系电话:025-58731158    E-mail:xbbjb@nuist.edu.cn    QQ交流群号:344646895

大气科学学报 ® 2024 版权所有  技术支持:北京勤云科技发展有限公司