Joint Sentinel-1 and SMAP data assimilation to improve soil moisture estimates.
作者： H. Lievens , R. H. Reichle , Q. Liu , G. J. M. De Lannoy , R. S. Dunbar
DOI: 10.1002/2017GL073904
关键词: Atmospheric radiative transfer codes 、 Water content 、 Radar observations 、 Radar 、 Environmental science 、 Earth surface 、 Remote sensing 、 Radiometer 、 Data assimilation
摘要: SMAP (Soil Moisture Active and Passive) radiometer observations at ∼40km resolution are routinely assimilated into the NASA Catchment Land Surface Model to generate 9-km Level-4 Soil product. This study demonstrates that adding high-resolution radar from Sentinel-1 assimilation can increase spatio-temporal accuracy of soil moisture estimates. Radar were either separately or simultaneously with observations. Assimilation impact was assessed by comparing 3-hourly, surface root-zone simulations in situ measurements core validation sites sparse networks, May 2015 December 2016. The consistently improved moisture, whereas impacts mostly neutral. Relatively larger improvements obtained assimilation. joint performed best, demonstrating complementary value
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sci-hub.se 参考文章(34)
C. S. Draper, R. H. Reichle, G. J. M. De Lannoy, Q. Liu, Assimilation of passive and active microwave soil moisture retrievals Geophysical Research Letters. ,vol. 39, pp. 1- 5 ,(2012) , 10.1029/2011GL050655
Rolf H. Reichle, Qing Liu, Observation-Corrected Precipitation Estimates in GEOS-5 ,(2014)
A. B. Smith, J. P. Walker, A. W. Western, R. I. Young, K. M. Ellett, R. C. Pipunic, R. B. Grayson, L. Siriwardena, F. H. S. Chiew, H. Richter, The Murrumbidgee soil moisture monitoring network data set Water Resources Research. ,vol. 48, pp. 1- 6 ,(2012) , 10.1029/2012WR011976
Z. Su, D. Fernández-Prieto, J. Timmermans, X. Chen, K. Hungershoefer, R. Roebeling, M. Schröder, J. Schulz, P. Stammes, P. Wang, E. Wolters, First results of the earth observation Water Cycle Multi-mission Observation Strategy (WACMOS) International Journal of Applied Earth Observation and Geoinformation. ,vol. 26, pp. 270- 285 ,(2014) , 10.1016/J.JAG.2013.08.002
Clement Albergel, Patricia de Rosnay, Claire Gruhier, Joaquin Muñoz-Sabater, Stefan Hasenauer, Lars Isaksen, Yann Kerr, Wolfgang Wagner, Evaluation of remotely sensed and modelled soil moisture products using global ground-based in situ observations Remote Sensing of Environment. ,vol. 118, pp. 215- 226 ,(2012) , 10.1016/J.RSE.2011.11.017
Jesse E Bell, Michael A Palecki, C Bruce Baker, William G Collins, Jay H Lawrimore, Ronald D Leeper, Mark E Hall, John Kochendorfer, Tilden P Meyers, Tim Wilson, Howard J Diamond, None, U.S. Climate Reference Network Soil Moisture and Temperature Observations Journal of Hydrometeorology. ,vol. 14, pp. 977- 988 ,(2013) , 10.1175/JHM-D-12-0146.1
Randal D. Koster, Max J. Suarez, Agnès Ducharne, Marc Stieglitz, Praveen Kumar, A catchment‐based approach to modeling land surface processes in a general circulation model: 1. Model structure Journal of Geophysical Research. ,vol. 105, pp. 24809- 24822 ,(2000) , 10.1029/2000JD900327
S. Bircher, N. Skou, K. H. Jensen, J. P. Walker, L. Rasmussen, A soil moisture and temperature network for SMOS validation in Western Denmark Hydrology and Earth System Sciences. ,vol. 16, pp. 1445- 1463 ,(2012) , 10.5194/HESS-16-1445-2012
Gabriëlle J. M. De Lannoy, Randal D. Koster, Rolf H. Reichle, Sarith P. P. Mahanama, Qing Liu, An updated treatment of soil texture and associated hydraulic properties in a global land modeling system Journal of Advances in Modeling Earth Systems. ,vol. 6, pp. 957- 979 ,(2014) , 10.1002/2014MS000330
Rogier van der Velde, M. Suhyb Salama, Omar Ali Eweys, Jun Wen, Qiang Wang, Soil Moisture Mapping Using Combined Active/Passive Microwave Observations Over the East of the Netherlands IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. ,vol. 8, pp. 4355- 4372 ,(2015) , 10.1109/JSTARS.2014.2353692