大地测量与地球动力学2018，Vol.38Issue(2)：200-205,6.DOI:10.14075/j.jgg.2018.02.019
风云静止卫星双星立体观测云顶高度反演初步研究
A Study of Cloud Top Height Retrieval from FY-2 Stereoscopic Observation
摘要
Abstract
We firstly derive the algorithm to retrieve the true cloud location and cloud top height by use of the FY2 stereoscopic observation,and the algorithm to compute the apparent cloud parallax from the true cloud location and its cloud top height.Based on the geostationary satellite stereoscopic algorithm,a simulation is performed on the distribution feature of the apparent cloud parallax and the relationship between the apparent cloud parallax and the cloud top height under two cases of FY2 stereoscopic observation.The analysis shows that the linear model may cause larger errors that cannot be ignored near the conjugate region edge.We accordingly propose a nonlinear cloud height retrieval algorithm which could be used on the full region of stereoscopic observation.The average height resolution is about 1.28 km for 86.5E/104.5E and 0.93 km for 86.5E/112E,when the spatial resolution of the applied data are both 0.01 degree.The combination of 86.5E/112E has better height resolution than 86.5E/104.5E.A stereo cloud height retrieval test is performed to a case from the northwest Pacific and the test results are compared with the CTH observed by Cloudsat CPR microwave radar.关键词
静止卫星/立体观测/视云位移/云顶高度Key words
FY2/stereoscopic/apparent cloud parallax/cloud-top height分类
天文与地球科学引用本文复制引用
赵文化,单海滨..风云静止卫星双星立体观测云顶高度反演初步研究[J].大地测量与地球动力学,2018,38(2):200-205,6.基金项目
National Natural Science Foundation of China,No.41172303 （）
Guangdong Meteorological Service Scientific Research Project,No.GRMC2014B09.国家自然科学基金(41172303) （41172303）
广东省气象局科研项目(GRMC2014B09). （GRMC2014B09）
