Post‐processing removal of correlated errors in GRACE data

  • Sean Swenson
    Department of Physics and Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder Colorado USA
  • John Wahr
    Department of Physics and Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder Colorado USA

書誌事項

公開日
2006-04
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1029/2005gl025285
公開者
American Geophysical Union (AGU)

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説明

<jats:p>Gravity fields produced by the Gravity Recovery and Climate Experiment (GRACE) satellite mission require smoothing to reduce the effects of errors present in short wavelength components. As the smoothing radius decreases, these errors manifest themselves in maps of surface mass variability as long, linear features generally oriented north to south (i.e., stripes). The presence of stripes implies correlations in the gravity field coefficients. Here we examine the spectral signature of these correlated errors, and present a method to remove them. Finally, we apply the filter to a model of surface‐mass variability to show that the filter has relatively little degradation of the underlying geophysical signals we seek to recover.</jats:p>

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