An effective filtering for GRACE time-variable gravity: Fan filter

Geophysical Research Letters

Volumn 36, Issue 17, 2009, Pages

  Zhang, Zi Zhan ^a,b   Chao, B F ^b   Lu, Yang ^a   Hsu, Hou Tse ^a  

^a NATIONAL CENTRAL UNIVERSITY   (Taiwan)

^b Wuhan National Laboratory for Optoelectronics   (China)

Author keywords

[No Author keywords available]

Indexed keywords

HARMONIC ANALYSIS; SIGNAL PROCESSING;

APRIORI; FAN FILTER; FILTER LENGTH; GAUSSIAN WEIGHT; LOW-PASS; LOW-PASS FILTERING; REDUCTION FACTOR; SHORT-WAVELENGTH; SPATIAL RESOLUTION; SPHERICAL HARMONICS; TIME-VARIABLE GRAVITY;

LOW PASS FILTERS;

AMPLITUDE; DATA PROCESSING; DATABASE; FILTER; GAUSSIAN METHOD; GEOPHYSICAL METHOD; GRAVITY; SPATIAL RESOLUTION;

EID: 71949121973     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2009GL039459     Document Type: Article

References (18)

1. Chambers, D. P. (2006), Evaluation of new GRACE time-variable gravity data over the ocean, Geophys. Res. Lett, 33, L17603, doi: 10.1029/ 2006GL027296.
2. Chao, B. F. (2005), On inversion for mass distribution from global (timevariable) gravity field, J. Geodyn., 39, 223-230, doi:10.1016/j.jog.2004. 11.001.
3. Chen, J. L., C. R. Wilson, and K.-W. Seo (2006), Optimized smoothing of Gravity Recovery and Climate Experiment (GRACE) time-variable gravity observations, J. Geophys. Res., 111, B06408, doi:10.1029/ 2005JB004064.
4. Cheng, M., and J. Ries (2007), Monthly estimates of C20 from 5 SLR satellites, GRACE Tech. Note 05, Jet Propul. Lab., Pasadena Calif. (Available at )
5. Davis, J. L., M. E. Tamisiea, P. Elósegui, J. X. Mitrovica, and E. M. Hill (2008), A statistical filtering approach for Gravity Recovery and Climate Experiment (GRACE) gravity data, J. Geophys. Res., 113, B04410, doi: 10.1029/2007 JB005043.
6. Han, S.-C., C. K. Shum, C. Jekeli, C.-Y. Kuo, C. Wilson, and K.-W. Seo (2005), Non-isotropic filtering of GRACE temporal gravity for geophysical signal enhancement, Geophys. J. Int., 163, 18-25, doi:10.1111/ J.1365-246X.2005.02756. x.
7. Jekeli, C. (1981), Alternative methods to smooth the Earth's gravity field, Tech. Rep. 327, Dep. of Geod. Sci. and Surv., Ohio State Univ., Columbus.
8. Kaula, W. M. (1966), Theory of Satellite Geodesy, Blaisdell, Waltham, Mass.
9. Klees, R., E. A. Revtova, B. C. Gunter, P. Ditmar, E. Oudman, H. C. Winsemius, and H. H. G. Savenije (2008), The design of an optimal filter for monthly GRACE gravity models, Geophys. J. Int., 175, 417-432, doi:10.1111/j,1365-246X.2008.03922.x.
10. Kusche, J. (2007), Approximate decorrelation and non-isotropic smoothing of time-variable GRACE-type gravity field models, J. Geod., 81, 733-749, doi: 10.1007/s00190-007-0143-3.
11. Sasgen, L, Z. Martinec, and K. Fleming (2006), Wiener optimal filtering of GRACE data, Stud. Geophys. Geod., 50, 499-508, doi:10.1007/s11200006-0031-y.
12. Schmidt, M., M. Fengler, T. Mayer-Gürr, A. Eicker, J. Kusche, L. Sánchez, and S. C. Han (2006), Regional gravity modeling in terms of spherical base functions, J Geod, 81, 17-38, doi:10.1007/s00190-006-0101-5. (Pubitemid 46023966)
13. Schrama, E. J. O., B. Wouters, and D. A. Lavallée (2007), Signal and noise in GRACE observed surface mass variations, J. Geophys. Res., 112, B08407, doi:10.1029/2006JB004882.
14. Swenson, S., and J. Wahr (2006), Post-processing removal of correlated errors in GRACE data, Geophys. Res. Lett., 33, L08402, doi: 10.1029/ 2005GL025285. (Pubitemid 43950130)
15. Tapley, B. D., S. Bettadpur, M. Watkins, and C. Reigber (2004), The gravity recovery and climate experiment: Mission overview and early results, Geophys. Res. Lett, 31, L09607, doi: 10.1029/2004GL019920.
16. Velicogna, I., and J. Wahr (2006), Measurements of time-variable gravity show mass loss in Antarctica, Science, 311, 1754-1756, doi:10.1126/ science. 1123785.
17. Wahr, J., M. Molennar, and F. Bryan (1998), Time variability of the Earth's gravity field: Hydrological and oceanic effects and their possible detection using GRACE, J. Geophys. Res., 103, 30,205-30,229, doi:10.1029/ 98JB02844.
18. Wouters, B., and E. J. O. Schrama (2007), Improved accuracy of GRACE gravity solutions through empirical orthogonal function filtering of spherical harmonics, Geophys. Res. Lett, 34, L23711, doi:10.1029/ 2007GL032098. (Pubitemid 351247025)