A dynamic approach for evaluating coarse scale satellite soil moisture products

被引:98
作者
Loew, A. [1 ]
Schlenz, F. [2 ]
机构
[1] Max Planck Inst Meteorol, Hamburg, Germany
[2] Univ Munich, Dept Geog, Munich, Germany
关键词
TEMPORAL STABILITY; SPATIAL VARIABILITY; TRIPLE COLLOCATION; DATA ASSIMILATION; WATER; SPACE; VALIDATION; MISSION; BAND; DERIVATION;
D O I
10.5194/hess-15-75-2011
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Validating coarse scale remote sensing soil moisture products requires a comparison of gridded data to point-like ground measurements. The necessary aggregation of in situ measurements to the footprint scale of a satellite sensor (>100 km(2)) introduces uncertainties in the validation of the satellite soil moisture product. Observed differences between the satellite product and in situ data are therefore partly attributable to these aggregation uncertainties. The present paper investigates different approaches to disentangle the error of the satellite product from the uncertainties associated to the up-scaling of the reference data. A novel approach is proposed, which allows for the quantification of the remote sensing soil moisture error using a temporally adaptive technique. It is shown that the point-to-area sampling error can be estimated within 0.0084 [m(3)/m(3)].
引用
收藏
页码:75 / 90
页数:16
相关论文
共 63 条
[11]  
CLARK CA, 1995, J APPL METEOROL, V34, P2029, DOI 10.1175/1520-0450(1995)034<2029:NSOTEO>2.0.CO
[12]  
2
[13]   Temporal stability of surface soil moisture in the Little Washita River watershed and its applications in satellite soil moisture product validation [J].
Cosh, MH ;
Jackson, TJ ;
Starks, P ;
Heathman, G .
JOURNAL OF HYDROLOGY, 2006, 323 (1-4) :168-177
[14]   Watershed scale temporal and spatial stability of soil moisture and its role in validating satellite estimates [J].
Cosh, MH ;
Jackson, TJ ;
Bindlish, R ;
Prueger, JH .
REMOTE SENSING OF ENVIRONMENT, 2004, 92 (04) :427-435
[15]   Consequences of surface heterogeneity for parameter retrieval from 1.4-GHz multiangle SMOS observations [J].
de Griend, AAV ;
Wigneron, JP ;
Waldteufel, P .
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2003, 41 (04) :803-811
[16]   Global Soil Moisture Patterns Observed by Space Borne Microwave Radiometers and Scatterometers [J].
de Jeu, R. A. M. ;
Wagner, W. ;
Holmes, T. R. H. ;
Dolman, A. J. ;
van de Giesen, N. C. ;
Friesen, J. .
SURVEYS IN GEOPHYSICS, 2008, 29 (4-5) :399-420
[17]  
DRAPER C, 2007, P MODSIM 2007 INT C
[18]   The Soil Moisture Active Passive (SMAP) Mission [J].
Entekhabi, Dara ;
Njoku, Eni G. ;
O'Neill, Peggy E. ;
Kellogg, Kent H. ;
Crow, Wade T. ;
Edelstein, Wendy N. ;
Entin, Jared K. ;
Goodman, Shawn D. ;
Jackson, Thomas J. ;
Johnson, Joel ;
Kimball, John ;
Piepmeier, Jeffrey R. ;
Koster, Randal D. ;
Martin, Neil ;
McDonald, Kyle C. ;
Moghaddam, Mahta ;
Moran, Susan ;
Reichle, Rolf ;
Shi, J. C. ;
Spencer, Michael W. ;
Thurman, Samuel W. ;
Tsang, Leung ;
Van Zyl, Jakob .
PROCEEDINGS OF THE IEEE, 2010, 98 (05) :704-716
[19]   Field observations of soil moisture variability across scales [J].
Famiglietti, James S. ;
Ryu, Dongryeol ;
Berg, Aaron A. ;
Rodell, Matthew ;
Jackson, Thomas J. .
WATER RESOURCES RESEARCH, 2008, 44 (01)
[20]  
FAST JD, 1991, MON WEATHER REV, V119, P2140, DOI 10.1175/1520-0493(1991)119<2140:TEOHSM>2.0.CO