DocumentCode :
124457
Title :
Land-ocean leakage errors in satellite gravity measurements using forward modeling
Author :
Fang Zou ; Shuanggen Jin
Author_Institution :
Shanghai Astron. Obs., Shanghai, China
fYear :
2014
fDate :
11-14 June 2014
Firstpage :
19
Lastpage :
23
Abstract :
The Gravity Recovery and Climate Experiment (GRACE) satellite launched in 2002 can offer high-precision time-varying gravity field and the changes of Earth´s surface mass, which has been widely used in geodesy, hydrology, oceanography and glaciology. However, one of larger errors in GRACE measurements, land-ocean leakage error restricts high accuracy retrieval of ocean mass and terrestrial water storage along the coasts. The land signals will contaminate the ocean signals with significant signal attenuation, particularly ocean coast leakage errors. In this paper, global land-ocean leakage errors from GRACE are investigated using the forward gravity modeling. The effects on global ocean mass variations are further assessed. Results show that the forward gravity modeling will greatly reduce the continent-ocean leakage errors, especially oceanic leakage effects.
Keywords :
oceanographic techniques; seawater; Earth surface mass; GRACE measurements; GRACE satellite; Gravity Recovery and Climate Experiment; forward modeling; geodesy; glaciology; global ocean mass variations; high-precision time-varying gravity field; hydrology; land-ocean leakage errors; ocean coast leakage errors; ocean mass retrieval; ocean signals; oceanic leakage effects; oceanography; satellite gravity measurements; terrestrial water storage; Computational modeling; Continents; Gravity; Measurement uncertainty; Rivers; Sea measurements; Sensors; GRACE; Leakage effects; Water cycle;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Earth Observation and Remote Sensing Applications (EORSA), 2014 3rd International Workshop on
Conference_Location :
Changsha
Print_ISBN :
978-1-4799-5757-6
Type :
conf
DOI :
10.1109/EORSA.2014.6927841
Filename :
6927841
Link To Document :
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