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Author Andersen, O.B.; Hinderer, J. doi  openurl
  Title Global inter-annual gravity changes from GRACE: Early results Type Journal Article
  Year (down) 2005 Publication Geophysical research letters Abbreviated Journal  
  Volume 32 Issue Pages  
  Keywords 1217 Geodesy and Gravity: Time variable gravity; 1855 Hydrology: Remote sensing; 1640 Global Change: Remote sensing; 1655 Global Change: Water cycles  
  Abstract Fifteen monthly gravity field solutions from the GRACE twin satellites launched more than two years ago have been studied to estimate gravity field changes between 2002 and 2003.The results demonstrate that GRACE is capable of capturing the changes in ground water on inter-annual scales with an accuracy of 0.4 ?Gal corresponding to 9 mm water thickness on spatial scales longer than 1300 km. Four of the most widely used global hydrological models have been investigated for their spatial comparison with GRACE observations of inter-annual gravity field variations due to changes in continental water storage. The Global Land Data Assimilation System model has a spatial correlation coefficient with GRACE observations of 0.65 over the northern hemisphere. This demonstrates that the observed gravity field changes on these scales are largely related to changes in continental water storage.  
  Programme 337  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher American Geophysical Union Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0094-8276 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number IPEV @ Thierry.Lemaire @ Serial 5596  
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