数值模拟和卫星反演大气能见度对比分析  

Comparison of Modeling Atmospheric Visibility with Visible Satellite Imagery

作　　者：傅刚[1] 徐杰[1] 张树钦[1] 

机构地区：[1]中国海洋大学海洋气象系,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2011年第4期1-10,共10页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(40675060);国家高技术研究发展计划项目(2006AA09Z151);国家海洋局项目(908-02-03-10);中国气象局公益性行业(气象)科研专项经费项目(GYHY200706031)资助

摘　　要：对2004年4月11日、2005年3月9日和2005年3月27日发生在黄渤海海域3个典型海雾个例数值模拟得到的大气能见度与可见光卫星云图的反照率进行对比分析,利用不同时刻大气能见度与反照率的对应关系进行线性数学拟合,得到新的适合白昼的大气能见度反演公式。利用该公式反演了几次显著海雾过程的大气能见度分布,发现海雾预报系统对大气能见度<200 m的海上浓雾的面积预报准确率约90%左右。对发生在2009年3月1日到2010年5月21日期间的46次较强海雾进行了初步统计,从判别海雾有无的角度来看该海雾预报系统对海雾的预报准确率为91.3%。Three typical sea fog cases which occurred on 11 April, 2004, 09 March, 2005 and 27 March, 2005 over the Yellow and Bohai Seas are simulated successfully, which are in good agreement with the real situation. The modeling atmospheric visibility with the albedo distribution of the visible satellite image is compared and the visibility-albedo empirical formula raised by Bendix is improved. It is showed that this new formula is suitable for clay-time, and can verify the atmospheric visibility distribution predicted by the Sea Fog Forecasting System （SFFS）. It is found that this SFFS may predict the heavy sea fog area over the Yellow and Bohai Seas in which atmospheric visibility is less than 200 m with about 90% correct accuracy. The preliminary statistics of 46 heavy sea fog events occurred from 01 March, 2009 to 21 May, 2010 over the Yellow and Bohai Seas indicates that the correct accuracy made by SFFS is about 91.3% in terms of sea fog existence.

关 键 词：海雾 大气能见度 数值模拟 可见光卫星云图 反照率 

分 类 号：P427.2[天文地球—大气科学及气象学]