基于CloudSat和Aqua卫星资料的北疆一次暴雪过程中云的宏微观物理属性  

Cloud Macro and Micro Physical Properties During a Snowstorm Based on CloudSat and Aqua Satellite Data

作　　者：刘岩[1] 马骁骏[1] 李浩[1] 黄观[2] 杨再福[1] 陈勇航[1] 崔彩霞[3] 邓军英[1] 凌燕[1] 

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]成都信息工程学院资源环境学院,四川成都610000 [3]新疆气象局,新疆乌鲁木齐830002

出　　处：《沙漠与绿洲气象》2015年第2期9-15,共7页Desert and Oasis Meteorology

基　　金：国家科技部公益性行业科研专项(GYHY201106007);国家科技支撑计划项目(2012BAC23B01);国家自然科学基金项目(41175026);中国沙漠气象科学基金(Sqj2012002)共同资助

摘　　要：采用CloudSat卫星资料2B-CLDCLASS及2B-CWC-RVOD数据集和Aqua卫星资料的CERES Aqua MODIS Edition 3A数据集,针对2010年12月2—4日北疆地区一次暴雪过程分析了云的类型分布、冰粒子等效半径、低层云等效高度等宏微观物理属性的垂直分布及空间分布情况。结果表明,此次暴雪过程中,云层分布在12 km以下,云中冰粒子等效半径和冰水含量均随云层高度增加而减少,冰粒子数浓度在垂直高度上呈单峰分布,高值分布在云层中部5.5 km处。北疆地区暴雪前和暴雪后基本为低层云云量小于40%的低值区,暴雪时则为大于60%的高值区,云等效高度暴雪前和暴雪后大多为小于6 km值域区,暴雪时为大于6 km的高值区。Using CloudSat satellite data sets of 2B-CLDCLASS and 2B-CWC-RVOD and CERES Aqua MODIS Edition 3A data sets, the vertical distribution of cloud microphysical properties such as ice effective radius, ice water content and ice number concentration and the spatial distribution of cloud macro-physical properties such as cloud amount and mean cloud effective height for low layer cloud in a snowstorm of Northern Xinjiang were analyzed in 2010 December 2nd-4th. The results showed that, during the snowstorm, the clouds were distributed below 12 km, and ice effective radius and ice water content were increased along with the cloud height increasing. The ice number concentration showed a unimodal distribution in vertical height, and the high values of ice number concentration were distributed in the clouds at the central which were in 5.5 km. The values of cloud amount for low layer cloud were less than 40% before and after the snowstorm while those were greater than 60% in the snowstorm. The values of mean cloud effective height for low layer cloud were less than 6km before and after the snowstorm while those were greater than 6 km in the snowstorm.

关 键 词：CLOUDSAT AQUA 宏微观物理属性 垂直分布 空间分布 

分 类 号：P407[天文地球—大气科学及气象学]