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ARCGICE WP 2.1

ARCGICE WP 2.1. Leader: DSPC Make new geoid of afrctic region based on GRACE. C.C.Tscherning, University of Copenhagen, 2005-03-01 1. Parameter and error-estimation. Observations:

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ARCGICE WP 2.1

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  1. ARCGICE WP 2.1 Leader: DSPC Make new geoid of afrctic region based on GRACE C.C.Tscherning, University of Copenhagen, 2005-03-01 1

  2. Parameter and error-estimation Observations: • Parameter is equal to N0 mean sea surface height • Ai = 1 if bias only • for all values of i which are associated with geoid heights. C.C.Tscherning, University of Copenhagen, 2005-01-13 2

  3. Parameter estimate • Then an estimate of T and of the parameters X are obtained as • where W is the a-priori weight matrix for the parameters (Generally the zero matrix). C.C.Tscherning, University of Copenhagen, 2005-01-13 3

  4. Data gridding Data may be gridded, so that spherical FFT can be used. (GEOCOL). C.C.Tscherning, University of Copenhagen, 2005-01-13 4

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