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“Tau-Omega”- and two-stream emission models applied to close-range and SMOS measurements
hal.structure.identifier | Swiss Federal Institute for Forest, Snow and Landscape Research WSL | |
dc.contributor.author | SCHWANK, M. | |
hal.structure.identifier | University of British Columbia [UBC] | |
dc.contributor.author | XIAOJUN, Li | |
hal.structure.identifier | Centre d'études spatiales de la biosphère [CESBIO] | |
dc.contributor.author | KERR, Yann H. | |
hal.structure.identifier | Swiss Federal Institute for Forest, Snow and Landscape Research WSL | |
dc.contributor.author | NADERPOUR, Reza | |
hal.structure.identifier | Universität Bern = University of Bern = Université de Berne [UNIBE] | |
dc.contributor.author | MATZLER, Christian | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
dc.contributor.author | WIGNERON, Jean-Pierre | |
dc.date.accessioned | 2024-04-08T11:56:23Z | |
dc.date.available | 2024-04-08T11:56:23Z | |
dc.date.issued | 2019 | |
dc.date.conference | 2019-07-28 | |
dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/195753 | |
dc.description.abstractEn | An Emission Models (EM) adequate for a retrieval algorithm requires being simple while still capturing the responses of brightness temperatures T B p,θ to the retrieval parameters. The objective of this study is to explore the benefits of the multiple-scattering Two-Stream (2S) EM over the "Tau-Omega" (TO) EM to retrieve soil Water Content WC and vegetation optical depth τ from L-band T B p,θ . For sparse and low-scattering vegetation T B,EM p,θ simulated with EM = TO and EM = 2S converge, which is not the case for dense and strongly scattering vegetation. WC RC and τ RC are retrieved with Retrieval Configurations RC = {TO, 2S} from T B p,θ : i) from a tower within a deciduous forest, and ii) by the "Soil Moisture and Ocean Salinity" (SMOS) mission. Using 2S EM instead of TO EM resulted in marginally lower WC RC retrievals while τ RC retrievals are reduced more considerably. With respect to in-situ WC in-situ , retrievals WC 2S derived from tower-based T B p,θ performed better than forest soil water-content WC TO retrieved via the inversion of the "reference" TO EM. Likewise, SMOS based WC 2S retrievals revealed better agreement with ECMWF WC simulations than WC TO achieved with the "reference" RC = TO. In short, our study provides clear evidence that it is meaningful to replace TO EM used for current SMOS and SMAP land retrieval with 2S EM.Further advantages of the 2S EM over the TO EM are outlined in this study. | |
dc.language.iso | en | |
dc.source.title | IEEE International Symposium on Geoscience and Remote Sensing IGARSS | |
dc.title.en | “Tau-Omega”- and two-stream emission models applied to close-range and SMOS measurements | |
dc.type | Communication dans un congrès | |
dc.identifier.doi | 10.1109/IGARSS.2019.8898225 | |
dc.subject.hal | Sciences du Vivant [q-bio] | |
bordeaux.page | 6158-6161 | |
bordeaux.hal.laboratories | Interactions Soil Plant Atmosphere (ISPA) - UMR 1391 | * |
bordeaux.institution | Bordeaux Sciences Agro | |
bordeaux.institution | INRAE | |
bordeaux.conference.title | 2019 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS 2019) | |
bordeaux.country | JP | |
bordeaux.title.proceeding | IEEE International Symposium on Geoscience and Remote Sensing IGARSS | |
bordeaux.conference.city | Yokohama | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-02789906 | |
hal.version | 1 | |
hal.invited | non | |
hal.proceedings | non | |
hal.conference.end | 2019-08-02 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-02789906v1 | |
bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=IEEE%20International%20Symposium%20on%20Geoscience%20and%20Remote%20Sensing%20IGARSS&rft.date=2019&rft.spage=6158-6161&rft.epage=6158-6161&rft.au=SCHWANK,%20M.&XIAOJUN,%20Li&KERR,%20Yann%20H.&NADERPOUR,%20Reza&MATZLER,%20Christian&rft.genre=unknown |
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