应用TOVS资料变分分析技术增加青藏高原地区摸式初始场信息  

APPLYING THE VARIATIONAL METHOD OF TOVS DATA OVER THE TIBETAN PLATEAU TO IMPROVING MODELS'INITIAL FIELDS

作　　者：翁永辉[1] 徐祥德[1] 柏晶瑜[1] 董超华 

机构地区：[1]中国气象科学研究院,北京100081 [2]国家气象局卫星气象中心,北京100081

出　　处：《气象学报》2000年第6期679-691,共13页Acta Meteorologica Sinica

基　　金：国家攀登 B项目!"青藏高原地-气系统物理过程及其对全球气候和中国灾害性天气影响的观测和理论研究"。

摘　　要：首次在测站稀少的高原地区引入经变分技术处理的 TOVS卫星资料 ,通过动力诊断探讨了解决高原地区测站少、数值预报模式初始场信息误差大的技术关键问题 ,提出了采用TOVS反演资料在高原地区增加模式初始场信息的构思 ,并应用变分法处理 TOVS反演资料 ,显著地提高了高原初始场信息的可靠性 ;并从动力诊断分析角度 ,进一步证实了 TOVS反演资料的应用有利于提高高原动力系统特征的描述能力 。Using TOVS data, corrected by variational method, into the numerical model's initial field over the Tibetan Plateau region where sparse observations exist, under the dynamical diagnosis, have investigated to minimize the larger error of initial fields in the numerical prediction model, which caused by the sparse observation on the Plateau, drafted the framework in which some bogus soundings are embodied with TOVS data over there in such a way that the dependability of the initial condition increases significantly. In the meantime, based on the dynamical diagnosis and analysis context, further confirmed that TOVS data are beneficial to improving the objectivity of initial fields, such as the characteristics of dynamical system, transportation channel of water vapor, and stratification stability over the Plateau.

关 键 词：TOVS反演资料 变分法 青藏高原 初始场 数值预报 

分 类 号：P456.7[天文地球—大气科学及气象学]