A new method to determine the tropopause

查看全文 作　　者：HAN [1]Tingting;PING [2]Jinsong;ZHANG [3]Sujun;YANG [1]Guogen 机构地区：[1]Ezhou Polytechnic;[2]Key Laboratory of Lunar and Deep Space Exploration,National Astronomical Observatory,Chinese Academy of Sciences;[3]Shanghai Astronomical Observatory,Chinese Academy of Sciences 出　　处：《Advances in Polar Science》索引2013年第24卷第3期,共5页 基　　金：supported by the Chinese Polar Science Strategy Research Fund Project(Grant no.20100204) 摘　　要：The tropopause has a complex structure and some interference information may exist in high-resolution global positioning system(GPS)/low earth-orbiting(LEO)radio occultation(RO)data.The position of the tropopause cannot be accurately determined using traditional cold point tropopause(CPT)and lapse rate tropopause(LRT)algorithms.In this paper,an integrative algorithm is developed to determinate tropopause parameters.The algorithm is applied to GPS/COSMIC RO data to obtain a global distribution of the height and temperature of the tropopause.This algorithm improves the utilization rate of GPS/LEO RO data by 30%compared with that from the traditional CPT method.The rationality and reliability of GPS/LEO RO data in probing the Earth's atmosphere are verified by our study of the tropopause using COSMIC data. 关 键 词：对流层顶 COSMIC 综合算法 全球定位系统 无线电掩星 低地球轨道 GPS LEO