空间科学学报2018，Vol.38Issue(2)：188-200,13.DOI:10.11728/cjss2018.02.188
卫星观测台风重力波数值模拟与直接对比验证
Numerical Simulation of Typhoon-generated Gravity Waves Observed by Satellite and its Direct Validation
摘要
Abstract
To analyze the stratospheric gravity waves induced by strong convection,Typhoon Soulik is investigated by the mesoscale model WRF-ARW (3.5 Version),ECMWF and AIRS observations.The WRF model results show that strong stratospheric gravity waves are induced by Typhoon Soulik,and the background wind plays a great role in modulation of the gravity waves propagation.The wave spectrum analysis reveals that the horizontal wavelength is about 500 km,the period is about 3～5 h,and the vertical wavelengths are gradually stretched with height about 10～14km,14～18 km and 22～26 km in the height of 20 km,30 km and 40 km.The momentum flux and wave drag are also analyzed.At last,the direct comparison of WRF,ECMWF and AIRS observations based on a radiative transfer model indicates that the stratospheric semicircular arc wave pattern,position and horizontal scale agree well.But there are also some differences among these data.The AIRS can detect more details than WRF and ECMWF data.The order of wave intensity is AIRS,WRF and ECMWF.关键词
卫星观测/台风/平流层/重力波/数值模拟Key words
Satellite observation/Typhoon/Stratosphere/Gravity wave/Numerical simulation分类
天文与地球科学引用本文复制引用
姚志刚,洪军,韩志刚,赵增亮..卫星观测台风重力波数值模拟与直接对比验证[J].空间科学学报,2018,38(2):188-200,13.基金项目
国家自然科学基金项目(NSFC41575031),中国博士后基金项目(2015M580124),部级重点课题项目(QX2015040311A12005)和国家重大专项课题项目(GFZX04021201)共同资助 （NSFC41575031）
