MODIS数据云相态反演在一次暴雪过程中的应用  

Application of Cloud Phase Retrieval to Snowstorm in Akzo Using MODIS Data

作　　者：胡列群 黄镇 黄慰军[1,3] 熊玲 

机构地区：[1]乌鲁木齐气象卫星地面站,乌鲁木齐830011 [2]新疆气象台,乌鲁木齐830002 [3]新疆气候中心,乌鲁木齐830002

出　　处：《应用气象学报》2012年第5期609-613,共5页Journal of Applied Meteorological Science

基　　金：中国气象局气象关键技术集成与应用(CMAGJ2011M59);新疆维吾尔自治区科技支撑项目(201133131)

摘　　要：该文选取新疆阿克苏地区2006年11月22—24日的EOS/MODIS卫星遥感资料,同时选取相关气象站的观测资料,应用三光谱云相态反演法,对阿克苏地区暴雪云团的变化过程进行了研究,通过三光谱亮温差点聚图对云相态变化的分析,清晰地展示出该天气系统的发生、发展到最终暴雪形成过程中的物理机制。反演结果与实际气象观测情况相一致;表明三光谱云相态反演法在理论和实际应用方面具有一定优势。Using satellite remote sensing information, the distribution of cloud-top particle can be retrieved and the physical mechanism of certain weather phenomenon can be explained. Nowadays, cloud phase inversion method based on passive remote sensing instruments on 8 μm, 11 μm and 12μm spectral bands（corre- sponding to three MODIS infrared spectral channels. Ch29, Ch31 and Ch32） are relatively practical, which is called tri-spectral cloud phase inversion method. EOS/MODIS satellite data in Akzo Prefecture of Xin- jiang and observations from relevant weather station are analyzed to study a snowstorm. The change of cloud phase is revealed by tri-spectral brightness and temperature difference scatter diagram, which clearly shows the whole process of cloud clustering from water cloud to hybrid cloud, and finally to ice cloud. It also reveals the physical mechanism how this weather system occurs and finally develops to blizzard. It can be seen that the result from tri-spectral cloud phase inversion method is completely according with actual circumstance. Therefore, it can be concluded that tri-spectral cloud phase inversion method has a theoreti- cal advantage and a wide application foreground in practice. Meanwhile, this method of MODIS data cloud phase recognition can be applied to analysis of blizzard clouds by FY-3 satellite.

关 键 词：MODIS数据 云相态反演 三光谱法 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] P426.63[自动化与计算机技术—控制科学与工程]