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Assessment of 9 km SMAP soil moisture: Evidence of narrowing the gap between satellite retrievals and model-based reanalysis by Zanpin Xing; Xiaojun Li; Lei Fan; Andreas Colliander; Frédéric Frappart; Patricia de Rosnay; Roberto Fernandez-Moran; Xiangzhuo Liu; Huan Wang; Lin Zhao; Jean-Pierre Wigneron is a Environmental Science article available to read on EtoBox.
What is Assessment of 9 km SMAP soil moisture: Evidence of narrowing the gap between satellite retrievals and model-based reanalysis about?
A number of global surface soil moisture (SM) datasets have been retrieved from the L-band frequency Soil Moisture Active Passive (SMAP) and the Soil Moisture and Ocean Salinity (SMOS) missions to study the terrestrial water, energy, and carbon cycles. This paper presents the performance of the recently developed 9 km global SMAP product (hereafter SMAP-INRAE-BORDEAUX, SMAP-IB9). The product retrieves SM from the 9 km SMAP radiometric products using the forward model (L-MEB, L-band Microwave Emission of the Biosphere) of SMOS INRA-CESBIO (SMOS-IC) and SMOS L2 algorithms. We inter-compared SMAP-IB9 with two other products with a similar grid resolution (~10 km): the SMAP Enhanced Level-3 SM dataset (SMAP-E) and the enhanced global dataset for the land component of the fifth generation of European reanalysis (ERA5-Land) with the main objective of assessing the discrepancy in accuracy between remotely sensed and model SM datasets. We found that ERA5-Land and SMAP-IB9 SM had the overall highest correlations (R = 0.62(±0.15) for ERA5-Land vs. 0.60 (±0.17) for SMAP-IB9 and 0.50(±0.15) for SMAP-E) by comparing with the International Soil Moisture Network (ISMN) in-situ measurements from 2
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It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Zanpin Xing; Xiaojun Li; Lei Fan; Andreas Colliander; Frédéric Frappart; Patricia de Rosnay; Roberto Fernandez-Moran; Xiangzhuo Liu; Huan Wang; Lin Zhao; Jean-Pierre Wigneron
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Environmental Science (Physical Sciences)