Improved Non-tidal Atmospheric and Oceanic De-aliasing for GRACE and SLR Satellites
Improved Non-tidal Atmospheric and Oceanic De-aliasing for GRACE and SLR Satellites
复制标题
改进 GRACE 和 SLR 卫星的非潮汐大气和海洋去混叠
DOI:
10.1007/978-3-642-10228-8_11
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
Dobslaw H.
中科院分区:
文献类型:
--
作者:
Flechtner F;Thomas M;Dobslaw H.
Non-tidal high-frequency atmospheric and oceanic mass variation models are routinely generated at GFZ Potsdam as so-called GRACE Atmosphere and Ocean De-aliasing Level-1B (AOD1B) products. As the barotropic ocean model PPHA used in release 0 (RL00) and 1 (RL01) has shown some deficiencies the latest versions of AOD1B are based on the baroclinic Ocean Model for Circulation and Tides (OMCT). In this chapter, we summarize the configuration and improvements of OMCT for operational AOD1B RL04 generation. As the temporal resolution of AOD1B products is 6 h and therefore S2 air tide signals may not be accounted for properly, some experiments have been made to investigate the influence of 3-hourly meteorological forcing on the resulting GRACE orbits and gravity fields. It turned out that the time-invariant atmospheric tide model used to correct interpolation errors is sufficiently accurate and even the error caused by a complete neglect of the atmospheric tides is below the current GRACE error level. Finally, the AOD1B RL04 model has been reprocessed back to 1976 for a consistent processing of SLR and subsequent combination with GRACE data. First results of LAGEOS derived C20 values with those from GRACE show higher correlations for the annual amplitudes but also semi-annual signals of unknown nature.
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DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
Henryk Dobslaw
通讯作者:
Henryk Dobslaw
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
Maik Thomas
通讯作者:
Maik Thomas
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
J. Wünsch;Maik Thomas;T. Gruber
通讯作者:
T. Gruber
影响因子:
2.8
作者:
H. Dobslaw;Maik Thomas
通讯作者:
Maik Thomas
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
F. Flechtner;R. Schmidt;U. Meyer
通讯作者:
U. Meyer