National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Variation in the geoid height detected by the mission GRACE
Kostelecký, J. ; Bezděk, Aleš ; Klokočník, Jaroslav
Time variability of the gravity field, provided by the GRACE mission since 2002, presented here is based on the transformation of monthly gravity field models to the geoid. We show the changes caused by the global water cycle and land hydrology.
Odhady přesnosti modelů tíhového pole pomocí nezávislé družicové diferenciální altimetrie
Klokočník, Jaroslav ; Wagner, C. A. ; Kostelecký, J.
A continuous progress in the Earth gravity field modeling requires some refinements in their accuracy assessments. The method based on latitude lumped coefficients, which makes use of satellite crossover altimetry data (independent of the tested gravity models) has been developed in years 1992 - 2000. It was applied on various gravity models, recently on EIGEN IS, which already includes data from the CHAMP mission. For the first time, EIGEN IS model has degree-dependent calibration factors and we tested and confirm that their choice is a right one.

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