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Time‐variable gravity from GRACE: First results

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Wahr, John, Swenson, Sean, Zlotnicki, Victor, Velicogna, Isabella·2004·Geophysical Research Letters

Abstract

Eleven monthly GRACE gravity field solutions are now available for analyses. We show those fields can be used to recover monthly changes in water storage, both on land and in the ocean, to accuracies of 1.5 cm of water thickness when smoothed over 1000 km. The amplitude of the annually varying signal can be determined to 1.0 cm. Results are 30% better for a 1500 km smoothing radius, and 40% worse for a 750 km radius. We estimate the annually varying component of water storage for three large drainage basins (the Mississippi, the Amazon, and a region draining into the Bay of Bengal), to accuracies of 1.0–1.5 cm.

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Metadata

Authors
Wahr, J., Swenson, S., Zlotnicki, V., & Velicogna, I.
Venue
Geophysical Research Letters
Published
2004-06
Volume
31
Issue
11
ISSN
  • 0094-8276 (ISSN-L)
  • 1944-8007
OpenAlex
W2046930921
Cited by
830
References
0
FWCI
37.71
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Time‐variable gravity from GRACE: First results. https://app.cochat.ai/papers/10.1029/2004gl019779
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Wahr, J., Swenson, S., Zlotnicki, V., & Velicogna, I. (2004). Time‐variable gravity from GRACE: First results. Geophysical Research Letters. https://doi.org/10.1029/2004gl019779

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