A deep neural network based SMAP soil moisture product
| hal.structure.identifier | University of Minnesota [Crookston] [UMC] | |
| hal.structure.identifier | University of Illinois at Urbana-Champaign [Urbana] [UIUC] | |
| dc.contributor.author | GAO, Lun | |
| hal.structure.identifier | University of Minnesota [Crookston] [UMC] | |
| dc.contributor.author | GAO, Qiang | |
| hal.structure.identifier | South Dakota State University [SDSTATE] | |
| dc.contributor.author | ZHANG, Hankui | |
| hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
| dc.contributor.author | LI, Xiaojun | |
| hal.structure.identifier | Jet Propulsion Laboratory [JPL] | |
| dc.contributor.author | CHAUBELL, Mario Julian | |
| hal.structure.identifier | University of Minnesota [Crookston] [UMC] | |
| dc.contributor.author | EBTEHAJ, Ardeshir | |
| hal.structure.identifier | Department of Aerospace Engineering and Mechanics [Minneapolis] [AEM] | |
| dc.contributor.author | SHEN, Lian | |
| hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
| dc.contributor.author | J.-P., Wigneron | |
| dc.date.accessioned | 2024-04-08T11:47:07Z | |
| dc.date.available | 2024-04-08T11:47:07Z | |
| dc.date.issued | 2022-08 | |
| dc.identifier.issn | 0034-4257 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/195268 | |
| dc.description.abstractEn | In this paper, it is demonstrated that while satellite soil moisture (SM) retrievals often have minimum biases, reanalysis data can capture more temporal variability of SM, especially for non-cropland areas - when validated against in situ measurements. Accordingly, this paper presents a deep neural network (DNN) that utilizes the merits of a suite of existing satellite and reanalysis products to produce a new SM product with minimum (maximum) bias (correlation) - using NASA's Soil Moisture Active Passive (SMAP) data and ERA5 reanalysis. The benchmark of the network is a bias-adjusted SM with maximum correlation with in situ data over each land cover type. The mean of the benchmark data is adjusted to the product that exhibits a minimum bias over each land-cover type. Consistent with the laws of L-band microwave propagation in soil and canopy, the input variables of DNN include polarized SMAP brightness temperatures, incidence angle, vegetation scattering albedo, surface roughness parameter, surface water fraction, effective soil temperatures, bulk density, clay fraction, and vegetation optical depth from the normalized difference vegetation index (NDVI) climatology. The DNN is trained and validated using two years (04/2015-03/2017) of global data and deployed for assessment of its performance from 04/2017 to 03/2021. The testing results against in situ measurements demonstrate that the DNN outputs typically exhibit improved error quality metrics over most land-cover types and climate regimes and can properly capture SM temporal dynamics, beyond each SMAP product across regional to continental scales. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Soil moisture | |
| dc.subject.en | L-band radiometry | |
| dc.subject.en | SMAP | |
| dc.subject.en | Deep neural networks | |
| dc.title.en | A deep neural network based SMAP soil moisture product | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.rse.2022.113059 | |
| dc.subject.hal | Sciences de l'environnement | |
| bordeaux.journal | Remote Sensing of Environment | |
| bordeaux.page | 1-15 | |
| bordeaux.volume | 277 | |
| bordeaux.hal.laboratories | Interactions Soil Plant Atmosphere (ISPA) - UMR 1391 | * |
| bordeaux.institution | Bordeaux Sciences Agro | |
| bordeaux.institution | INRAE | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-03696623 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-03696623v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Remote%20Sensing%20of%20Environment&rft.date=2022-08&rft.volume=277&rft.spage=1-15&rft.epage=1-15&rft.eissn=0034-4257&rft.issn=0034-4257&rft.au=GAO,%20Lun&GAO,%20Qiang&ZHANG,%20Hankui&LI,%20Xiaojun&CHAUBELL,%20Mario%20Julian&rft.genre=article |
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