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Termes IGN > 1- Outils - instruments et méthodes > instrument > capteur (télédétection) > radiomètre > Special sensor microwave imager
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Potential use of surface-sensitive microwave observations over land in numerical weather prediction / E. Gerard in IEEE Transactions on geoscience and remote sensing, vol 49 n° 4 (April 2011)
[article]
Titre : Potential use of surface-sensitive microwave observations over land in numerical weather prediction Type de document : Article/Communication Auteurs : E. Gerard, Auteur ; Fatima Karbou, Auteur ; Florence Rabier, Auteur Année de publication : 2011 Article en page(s) : pp 1251 - 1262 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] assimilation des données
[Termes IGN] intégration de données
[Termes IGN] prévision météorologique
[Termes IGN] Special sensor microwave imager
[Termes IGN] télédétection en hyperfréquenceRésumé : (Auteur) This paper describes several sensitivity studies carried out with the French global 4-D-Var system to check its ability to assimilate surface-sensitive observations over land from the Special Sensor Microwave Imager (SSM/I). As well as a sound knowledge of land-surface parameters, the assimilation of SSM/I observations requires effective rain-detection and bias-correction algorithms. Three sensitivity components are hence analyzed with a special emphasis on the land-surface emissivity at SSM/I frequencies estimated from satellite observations. Several rain algorithms were tested to reject cloudy/rainy observations over land, and the bias-correction scheme was adapted to improve its performance over land and sea surfaces. Once these problems have been outlined, a global 4-D-Var assimilation experiment which assimilates SSM/I observations over land surfaces was run and compared with a control experiment. The impact on forecast scores has been found to be globally positive. Nevertheless, the very high sensitivity of SSM/I to each of the three components presented in this study is characterized by opposite effects that, once clustered together, lead to some residual biases over land due to their combined effects. Numéro de notice : A2011-132 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2010.2075936 Date de publication en ligne : 21/10/2010 En ligne : https://doi.org/10.1109/TGRS.2010.2075936 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30911
in IEEE Transactions on geoscience and remote sensing > vol 49 n° 4 (April 2011) . - pp 1251 - 1262[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 065-2011041 RAB Revue Centre de documentation En réserve L003 Disponible Artificial neural network-based techniques for the retrieval of SWE [snow water equivalent] and snow depth from SSM/I data / Marco Tedesco in Remote sensing of environment, vol 90 n° 1 (15/03/2004)
[article]
Titre : Artificial neural network-based techniques for the retrieval of SWE [snow water equivalent] and snow depth from SSM/I data Type de document : Article/Communication Auteurs : Marco Tedesco, Auteur ; J.T. Pulliainen, Auteur ; M. Takala, Auteur ; M.T. Hallikainen, Auteur ; P. Pampaloni, Auteur Année de publication : 2004 Article en page(s) : pp 76 - 85 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] analyse comparative
[Termes IGN] Finlande
[Termes IGN] neige
[Termes IGN] réalité de terrain
[Termes IGN] réseau neuronal artificiel
[Termes IGN] Special sensor microwave imager
[Termes IGN] télédétection en hyperfréquenceRésumé : (Auteur) The retrieval of snow water equivalent (SWE) and snow depth is performed by inverting Special Sensor Microwave Imager (SSM/I) brightness temperatures at 19 and 37 GHz using artificial neural network ANN-based techniques. The SSM/I used data, which consist of Pathfinder Daily EASE-Grid brightness temperatures, were supplied by the National Snow and Ice Data Centre (NSIDC). They were gathered during the period of time included between the beginning of 1996 and the end of 1999 all over Finland. A ground snow data set based on observations of the Finnish Environment Institute (SYKE) and the Finnish Meteorological Institute (FMI) was used to estimate the performances of the technique. The ANN results were confronted with those obtained using the spectral polarization difference (SPD) algorithm, the HUT model-based iterative inversion and the Chang algorithm, by comparing the RMSE, the R , and the regression coefficients. In general, it was observed that the results obtained through ANN-based technique are better than, or comparable to, those obtained through other approaches, when trained with simulated data. Performances were very good when the ANN were trained with experimental data. Numéro de notice : A2004-129 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2003.12.002 En ligne : https://doi.org/10.1016/j.rse.2003.12.002 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26656
in Remote sensing of environment > vol 90 n° 1 (15/03/2004) . - pp 76 - 85[article]vol 39 n° 8 - August 2001 - Special issue on large scale passive microwave remote sensing of soil moisture (Bulletin de IEEE Transactions on geoscience and remote sensing) / Geoscience and remote sensing societyExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 065-01081 RAB Revue Centre de documentation En réserve L003 Disponible The Special Sensor Microwave Imager, a new instrument with rainfall monitoring potential / E.C. Barrett in International Journal of Remote Sensing IJRS, vol 9 n° 12 (December 1988)
[article]
Titre : The Special Sensor Microwave Imager, a new instrument with rainfall monitoring potential Type de document : Article/Communication Auteurs : E.C. Barrett, Auteur ; C. Kidd, Auteur ; J.O. Bailey, Auteur Année de publication : 1988 Article en page(s) : pp 1943 - 1950 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] Grande-Bretagne
[Termes IGN] image spatiale
[Termes IGN] pluie
[Termes IGN] radiomètre à hyperfréquence
[Termes IGN] Special sensor microwave imagerNuméro de notice : A1988-279 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431168808954993 En ligne : https://doi.org/10.1080/01431168808954993 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=24858
in International Journal of Remote Sensing IJRS > vol 9 n° 12 (December 1988) . - pp 1943 - 1950[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-88121 RAB Revue Centre de documentation En réserve L003 Disponible