Determination of global mean sea surface WHU2000 using multi-satellite altimetric data

查看全文 作　　者：Jiang, [1]WP;Li, [1]JC;Wang, [1]ZG

机构地区：[1]Wuhan Univ, Sch Geodesy & Geophys, Wuhan 430079, Peoples R China

出　　处：《Chinese Science Bulletin》索引2002年第47卷第19期,共5页

基　　金：This work was supported bythe National Natural Science Foundation for Outstanding Young Scientists (Grant No. 49625408). 摘　　要：In this study, the overall editing criteria for altimetric data are considered and the geophysical correction models is improved. The datum for various altimetric data is also unified and the method of a full-combined crossover adjustment for different altimetric tracks is used to improve the radial orbits of Geosat, ERS-1 and ERS-2 data. In addition, the method for determining mean sea surface (MSS) by using multi-altimetric data is developed. The data used to compute WHU2000 MSS include 7-year Topex/Poseidon data (cycles 11-249), 2-year Geosat ERM data (cycles 1-44), 5-year ERS2 data (cycles 1-52) and all ERS-1 168-day data. The WHU2000 MSS is determined with a grid resolution of 2’×2’ within the ± 82° latitude and its precision is better than 0.05 m. Comparing WHU 2000MSS with 3.75’×3.75’ CLS_SHOM98.2 MSS, 3’×3’ GFZ MSS95A and 3.75’×3.75’ OSU MSS95, as external checks, the corresponding standard deviation (STD) of their differences is 0.090 m, 0.211 m and 0.079 m respectively. 关键词：ALTIMETRY mean SEA surface CROSSOVER adjustment.

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Determination of global mean sea surface WHU2000 using multi-satellite altimetric data

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