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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)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 49 n° 4 (April 2011) . - pp 1251 - 1262 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 hyperfréquence Résumé : (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 [article]

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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)

Public [article]  inRemote sensing of environment > vol 90 n° 1 (15/03/2004) . - pp 76 - 85 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 hyperfréquence Résumé : (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 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26656 [article]

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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 society  

Public [n° ou bulletin]  est un bulletin de IEEE Transactions on geoscience and remote sensing / IEEE Geoscience and remote sensing society (Etats-Unis) (1986 -)   Titre : vol 39 n° 8 - August 2001 - Special issue on large scale passive microwave remote sensing of soil moisture Type de document : Périodique Auteurs : Geoscience and remote sensing society, Auteur Année de publication : 2001 Importance : 250 p. Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Télédétection [Termes IGN] Advanced Microwave Scanning Radiometer [Termes IGN] capteur passif [Termes IGN] Electronically Scanned Thinned Array Radiometer [Termes IGN] humidité du sol [Termes IGN] modèle hydrographique [Termes IGN] Scanning Multichannel Microwave Radiometer [Termes IGN] Soil Moisture and Ocean Salinity Mission [Termes IGN] Special sensor microwave imager [Termes IGN] télédétection en hyperfréquence [Termes IGN] TRMM [Termes IGN] zone humide Numéro de notice : 065-0108 Thématique : IMAGERIE Nature : Numéro de périodique En ligne : http://ieeexplore.ieee.org/xpl/tocresult.jsp?isnumber=20399&punumber=36 Format de la ressource électronique : URL sommaire Permalink : https://documentation.ensg.eu/index.php?lvl=bulletin_display&id=2344 [n° ou bulletin]

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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)

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 9 n° 12 (December 1988) . - pp 1943 - 1950 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 imager Numéro de notice : A1988-279 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=24858 [article]

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Passive microwave remote sensing for sea ice research / National Aeronautics and Space Administration NASA (1984)

Public Titre : Passive microwave remote sensing for sea ice research : report of the [NASA] science working group [for the Special Sensor Microwave Imager (SSM/I)], December 1984 Type de document : Monographie Auteurs : National Aeronautics and Space Administration NASA, Auteur Editeur : Seattle : University of Washington Année de publication : 1984 Importance : 55 p. Format : 21 x 28 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] Arctique, océan [Termes IGN] capteur passif [Termes IGN] données météorologiques [Termes IGN] glace de mer [Termes IGN] Groenland [Termes IGN] image Nimbus-SMMR [Termes IGN] image NOAA-AVHRR [Termes IGN] rayonnement infrarouge [Termes IGN] Sibérie [Termes IGN] Special sensor microwave imager [Termes IGN] télédétection en hyperfréquence Résumé : (Auteur) This report summarizes how data gathered by remote sensors on satellites can be utilized for sea ice research, and describes how the brightness temperatures measured by a passive microwave imager can be converted to maps of total sea ice concentration, and to the areal fractions covered by first year and multiyear ice. Several ancillary observations, especially by means of automatic data buoys and submarines equipped with upward-looking sonars, are needed to improve the validation and interpretation of satellite data. The design and performance characteristics of the Navy's Special Sensor Microwave Imager, expected to be in orbit in late 1985, are described. It is recommended that data from that instrument be processed to a form suitable for research applications and archived in a readily accessible form. The report concludes with a description of the sea ice data products required for research purposes and recommendations for their archival and distribution to the scientific community. Note de contenu : EXECUTIVE SUMMARY 1. INTRODUCTION 1.1 Sea Ice 1.2 Sea Ice Research 1.3 Observations 2. SATELLITE REMOTE SENSING OF SEA ICE 2.1 Visible and Infrared Sensors 2.2 Microwave Measurements 3. METHODS OF PASSIVE MICROWAVE REMOTE SENSING 3.1 Background 3.2 Derivation of Sea Ice Characteristics 3.2.1 Single frequency methods 3.2.2 Multifrequency methods 3.3 Observations in the Marginal Ice Zone (MIZ) 3.4 Multispectral Cluster Analysis 3.5 Validation 4. FUTURE RESEARCH 4.1 Algorithm Improvement and Validation 4.2 Ancillary Measurements 4.2.1 Data buoys 4.2.2 Submarine data 4.2.3 Other satellite measurements 5. THE SPECIAL SENSOR MICROWAVE IMAGER (SSM/I) 5.1 Description of the Instrument 5.2 Dataproducts 5.3 Radiometer Performance Checks 5.4 Earth Location 6. DATA PRODUCTS FOR RESEARCH 6.1 Data Archives and Access 6.2 Algorithm Selection 7. CONCLUSION Numéro de notice : 16671 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=55211

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