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GRACE, the Chandler Wobble and Interpretations of Terrestrial Water Transient Storage

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Document pages: 19 pages

Abstract: Measuring Terrestrial Water Transient Storage in its various componentsof Earth by orbiting sensors on satellites has been a quest for more than 40 years.Not only in the Hydrology community but also Climatology and Meteorology,Geology, Geodesy, Geophysics and Oceanography have thechallenge to attempt to first learn how to measure, then measure and assess theresults. The importance is that Earth’s environments are changing and humancommunities, local and national governing bodies need ability to assess currenthazards and to have predictive capabilities for society both local andinternational. So too the Gravity Recovery and Climate Experiment (GRACE) hasjoined the ongoing international space-based missions. There will be more afterGRACE. For now is an important juncture in the effort to measure TerrestrialWater Transient Storage to ask, “What can GRACE measure and what is GRACEmeasuring”? Results of this investigation of the GRACE datasets by spectralmethods indicate the detection of the Chandler Wobble but the Annual Wobble isaliased and below significance. Therefore, interpretations of Terrestrial WaterTransient Storage are failed.

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