Errors of regional mass variations inferred from GRACE monthly solutions.

Research output: Contribution to journalResearch articleContributedpeer-review

Abstract

Error correlations in current GRACE monthly gravity field models strongly affect the errors of inferred regionally averaged mass variations (RMV). To demonstrate this, we develop an empirical method which roughly estimates scaling factors to convert error bars computed by ignoring error correlations into more realistic error bars for RMV. For current solutions by CSR and GFZ, we find factors in the order of 2 or more for near-polar regions and below one for near-equatorial regions. A comparison of RMV computed from the CSR and the GFZ models for Greenland, Antarctica and the Amazon basin supports our findings. We discuss consequences on error assessment and error separation. For example, previously published GRACE-derived RMV of Greenland may be still strongly affected by errors in the GRACE products.

Details

Original languageEnglish
Number of pages5
JournalGeophysical Research Letters
Volume33
Issue number7
Publication statusPublished - 8 Apr 2006
Peer-reviewedYes

External IDs

Scopus 33646846497
ORCID /0000-0001-5797-244X/work/142246496

Keywords

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