Details

Title

Grace Signal Filtering as a Means of Determining Equivalent Water Thickness in Poland

Journal title

Papers on Global Change IGBP

Yearbook

2012

Numer

No 19

Publication authors

Divisions of PAS

Nauki o Ziemi

Abstract

<jats:title>Abstract</jats:title><jats:p>In the paper an Equivalent Water Thickness (EWT) determination as a way of observing gravity variations is described. Since raw data acquired directly from Gravity Recovery and Climate Experiment - GRACE satellites is unsuitable for analysis due to stripes occurrence, a filtering algorithm must be used. In this paper, authors are testing two isotropic (Gauss, CNES/GRGS) filters and two anisotropic filters (Wiener- -Kolomogorov, ANS). Correlation, amplitude ratio, and modification were determined as well as maps were generated.</jats:p>

Publisher

Polish Academy of Sciences

Date

2012

Identifier

ISSN 1730-802X

References

Han (2005), Non - isotropic filtering of GRACE temporal gravity for geophysical signal enhancement, Geophysical Journal International, 163. ; Swenson (2011), Restoring Signal Loss in GRACE Terrestrial Water Storage Estimates System Discussions, Hydrology and Earth Sciences. ; Zhang (2009), An effective filtering for GRACE time - variable gravity : Fan filter, Geophysical Research Letters, doi.org/10.1029/2009GL039459 ; Chambers (2006), Converting Release - Gravity Coefficient into Maps of Equivalent Water Thickness, Geophysical Research Letters.

DOI

10.2478/v10190-012-0002-9

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