@ARTICLE{Biryło_Monika_Grace_2012, author={Biryło, Monika and Nastula, Jolanta}, number={No 19}, journal={Papers on Global Change IGBP}, howpublished={online}, year={2012}, publisher={Polish Academy of Sciences}, abstract={AbstractIn 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.}, title={Grace Signal Filtering as a Means of Determining Equivalent Water Thickness in Poland}, URL={http://journals.pan.pl/Content/98855/PDF/v10190-012-0002-9.pdf}, doi={10.2478/v10190-012-0002-9}, }