FN Archimer Export Format
PT J
TI A pattern-filtering method for the determination of ocean bottom pressure anomalies from GRACE solutions
BT 
AF BOENING, C.
   TIMMERMANN, R.
   MACRANDER, A.
   SCHROETER, J.
AS 1:1;2:1;3:1;4:1;
FF 1:;2:;3:;4:;
C1 Alfred Wegener Inst Polar & Marine Res, D-27570 Bremerhaven, Germany.
C2 INST A WEGENER, GERMANY
IF 2.959
TC 21
UR https://archimer.ifremer.fr/doc/00489/60030/63297.pdf
   https://archimer.ifremer.fr/doc/00489/60030/63298.txt
   https://archimer.ifremer.fr/doc/00489/60030/63299.txt
LA English
DT Article
CR NIVMER
AB Comparison of mass anomalies from the Gravity Recovery and Climate Experiment (GRACE) to in-situ ocean bottom pressure (OBP) data is complicated by the fact that GRACE estimates are representative for phenomena with scales of hundreds of km, while OBP measurements are pointwise by nature. Simulations with the Finite Element Sea-ice Ocean Model (FESOM) indicate that on a monthly time scale OBP anomalies are coherent over large areas of complex geometry. A new filtering method for GRACE-derived ocean mass anomalies is obtained by applying these coherence patterns on a regular grid. Time series from OBP recorders all over the world ocean are used for validation. Compared to Gaussian filtering, the pattern-filtering method improves the correlation between GRACE retrievals and in-situ OBP data (max. correlation now 0.87). Land leakage effects are eliminated almost completely. Finer scales can be resolved such that highly variable currents like the Gulf Stream can now be identified.
PY 2008
PD SEP
SO Geophysical Research Letters
SN 0094-8276
PU Amer Geophysical Union
VL 35
IS 18
UT 000259606400003
DI 10.1029/2008GL034974
ID 60030
ER

EF