Earth Observation with CHAMP: Results from Three Years in by Erik R. Ivins, Eric Rignot, Xiaoping Wu, Thomas S. James,

By Erik R. Ivins, Eric Rignot, Xiaoping Wu, Thomas S. James, Gino Casassa (auth.), Prof. Dr. Dr. Christoph Reigber, Prof. Dr. Hermann Lühr, Dr. Peter Schwintzer, Dr. Jens Wickert (eds.)

In the summer time of 2000 the German geo-research satellite tv for pc CHAMP used to be embarked on orbit. Its cutting edge payload association and the low preliminary orbit let CHAMP to concurrently gather and nearly consistently examine specified information in terms of gravity and magnetic fields at low altitude. additionally, CHAMP additionally measures the impartial surroundings and ionosphere utilizing GPS ideas. 3 years after release, greater than 2 hundred CHAMP investigators and co-investigators from worldwide met on the GeoForschungsZentrum in Potsdam to offer and talk about the consequences derived from the broad information units of the undertaking. the most consequence of this professional assembly is summarized during this quantity. The publication deals a finished perception into the current prestige of the exploitation of CHAMP facts for Earth method examine and functional purposes in geodesy, geophysics and meteorology.

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A) GRACE GGM01S 120x120 geoid (left), and (b) a hybrid geoid combining GRACE and ARC-GP models (right, see text). 44 David McAdoo et al. Fig. 8. (a) Left: ERS-1, four-year mean sea surface (MSS), (b) Right: ERS MSS minus hybrid geoid (Fig. 7b); Note the windshield-shaped test region F extending from 150E to 230E (see text). As a preliminary demonstration of the utility of such a "Hybrid” Arctic geoid we have subtracted it from a mean sea surface (Fig. 8a) constructed from 4 years ( '94-'97') of re-tracked ERS-1 data (Peacock and Laxon, 2003) .

Part I: The land dynamics (LaD) model. Journal of Hydrometeorology 3(3): 283-299. Reigber Ch, Schwintzer P, Neumayer K-H, Barthelmes F, König R, Förste Ch, Balmino G, Biancale R, Lemoine J-M, Loyer S, Bruinsma S, Perosanz F, Fayard T (2003a) The CHAMP-only Earth Gravity Field Model EIGEN-2. Adv Space Res 31(8): 1883-1888. Reigber Ch, Schmidt R, Flechtner F, König R, Meyer U, Neumayer K-H, Schwintzer P, Zhu SY (2003b) First GFZ GRACE gravity field model EIGEN-GRACE01S. de/grace/results. Comparison of Superconducting Gravimeter and CHAMP Satellite Derived Temporal Gravity Variations Jürgen Neumeyer1, Peter Schwintzer1, Franz Barthelmes1, Olaf Dierks1, Yuichi Imanishi2, Corinna Kroner3, Bruno Meurers4, He-Ping Sun5, and Heikki Virtanen6 1 2 3 4 5 6 GeoForschungsZentrum Potsdam, Dept.

The long-periodic tidal waves are well determined by ground measurements, therefore they can be applied as a reference for validation. g. Amazon area). Key words: gravity field, CHAMP, Superconducting Gravimeter, gravity variation 1 Introduction One objective of the new-generation satellite gravity missions CHAMP and GRACE is the recovery of temporal Earth gravity field variations. For the CHAMP mission the gravity resolution is about 1 µgal at a half wavelength spatial resolution of λ/2 = 5000 km with a temporal resolution of 1 month.

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