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Improved geolocation and Earth incidence angle information for a fundamental climate data record of the SSM/I sensors / Wesley Berg in IEEE Transactions on geoscience and remote sensing, vol 51 n° 3 Tome 1 (March 2013)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 51 n° 3 Tome 1 (March 2013) . - pp 1504 - 1513 Titre : Improved geolocation and Earth incidence angle information for a fundamental climate data record of the SSM/I sensors Type de document : Article/Communication Auteurs : Wesley Berg, Auteur ; MATHEW R.P. Sapiano, Auteur ; Jennifer Horsman, Auteur ; C. Kummerow, Auteur Année de publication : 2013 Article en page(s) : pp 1504 - 1513 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] angle d'incidence [Termes IGN] étalonnage de capteur (imagerie) [Termes IGN] étalonnage relatif [Termes IGN] géopositionnement [Termes IGN] image DMSP-SSM/I [Termes IGN] température de luminance Résumé : (Auteur) The long-term data record of microwave imager data from the series of six Special Sensor Microwave/Imagers (SSM/Is) on board the Defense Meteorological Satellite Program (DMSP) spacecraft has been used to produce global multidecadal time series of a number of geophysical parameters, including precipitation, total precipitable water, ocean surface wind speed, and sea ice extent. As part of an effort to produce an intercalibrated fundamental climate data record (CDR) of the brightness temperature (Tb) data from the SSM/I, an examination of geolocation errors and the subsequent impact on the view angle [or the Earth incidence angle (EIA)] is performed. Using a combination of techniques, estimates of changes in the sensor/spacecraft attitude, including deviations in roll, pitch, and yaw, have been computed for the life of each of the SSM/I sensors. Applying these corrections results in an improved pixel geolocation, but more importantly, it provides accurate estimates of the EIA across the scan and throughout each orbit. An analysis of uncertainties in the calculation of EIA shows mean errors within 0.1 °, which translates to errors in the calibration of less than 0.2 K for all channels. The availability of these precise estimates of EIA is extremely important for producing CDRs since the mean EIA decreases over time due to the decay in the DMSP orbits, which will lead to an artificial climate trend if not properly accounted for by the geophysical retrieval algorithms. Numéro de notice : A2013-127 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2012.2199761 En ligne : https://doi.org/10.1109/TGRS.2012.2199761 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32265 [article]

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vol 46 n° 4 Tome 1 - April 2008 - Special issue on the DMSP special sensor microwave imager sounder (Bulletin de IEEE Transactions on geoscience and remote sensing) / D. Kunkee  

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 46 n° 4 Tome 1 - April 2008 - Special issue on the DMSP special sensor microwave imager sounder Type de document : Périodique Auteurs : D. Kunkee, Éditeur scientifique ; K. St-Germain, Éditeur scientifique ; Geoscience and remote sensing society, Auteur Année de publication : 2008 Importance : 250 p. Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Télédétection [Termes IGN] assimilation des données [Termes IGN] étalonnage de capteur (imagerie) [Termes IGN] image DMSP-SSM/I [Termes IGN] radiomètre à hyperfréquence Numéro de notice : 065-0804A Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Numéro de périodique En ligne : http://ieeexplore.ieee.org/xpl/tocresult.jsp?isnumber=4475697&punumber=36 Format de la ressource électronique : URL sommaire Permalink : https://documentation.ensg.eu/index.php?lvl=bulletin_display&id=9532 [n° ou bulletin]

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Satellite evidence of the melting Greenland's ice cap: Ice losses now far surpass ice gains / J. Triglav in Geoinformatics, vol 10 n° 4 (01/06/2007)

Public [article]  inGeoinformatics > vol 10 n° 4 (01/06/2007) . - pp 6 - 8 Titre : Satellite evidence of the melting Greenland's ice cap: Ice losses now far surpass ice gains Type de document : Article/Communication Auteurs : J. Triglav, Auteur Année de publication : 2007 Article en page(s) : pp 6 - 8 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] calotte glaciaire [Termes IGN] eau de fonte [Termes IGN] GRACE [Termes IGN] Groenland [Termes IGN] image DMSP-SSM/I Résumé : (Editeur) For the first time, NASA scientists have analyzed data from direct, detailed satellite measurements to show that ice losses now far surpass ice gains in the shrinking Greenland ice sheet. Will this trend continue? Today, thanks to modern satellite technology, the quickest and easiest way for scientists to survey the polar regions on a daily basis is from the unique vantage point of space. We compiled texts and images from various sources - mostly NASA - to bring you a short overview of this 'hot' subject. Numéro de notice : A2007-226 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28589 [article]

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Study of rain events over the South China Sea by synergistic use of multi-sensor satellite and ground-based meteorological data / W. Alpers in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 3 (March 2007)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 73 n° 3 (March 2007) . - pp 267 - 278 Titre : Study of rain events over the South China Sea by synergistic use of multi-sensor satellite and ground-based meteorological data Type de document : Article/Communication Auteurs : W. Alpers, Auteur ; C. Cheng, Auteur ; et al., Auteur Année de publication : 2007 Article en page(s) : pp 267 - 278 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] Chine [Termes IGN] données météorologiques [Termes IGN] image DMSP-SSM/I [Termes IGN] image Envisat-ASAR [Termes IGN] image GOES [Termes IGN] image multicapteur [Termes IGN] image QuikSCAT [Termes IGN] image TRMM-MI [Termes IGN] précipitation [Termes IGN] signature spectrale [Termes IGN] surface de la mer Résumé : (Auteur) Rain cells and rain bands over the South China Sea off the coast of Hong Kong are studied by using multi-sensor satellite and ground-based meteorological data. These include synthetic aperture radar (SAR) images acquired by the Advanced Synthetic Aperture Radar (ASAR) onboard the European ENVISAT satellite, weather radar images from the Hong Kong Observatory (HKO), rain rate data acquired by the Special Sensor Microwave Imager (SSM/I) sensor onboard the F15 satellite of the American Defense Meteorological Satellite Program (DMSP) and the rain sensors onboard the Tropical Rainfall Measurement Mission (TRMM) satellite, cloud image of GOES-9 satellite, sea surface wind maps acquired by the scatterometer onboard the QUIKSCAT satellite, and meteorological data from weather stations in Hong Kong. Three rain events, typical of Hong Kong, are studied. The first event consists of a cluster of rain cells associated with the summer monsoon, the second one of rain cells aligned in a rain band generated by an upper-air trough, and the third one consists of small rain cells embedded in a cold front. It is shown that ASAR images, which have a resolution of 30 m in the Image Mode (IM) and 150 m resolution in the Wide Swath Mode (WSM), yield much more detailed information on the spatial structure of rain events over the ocean than data obtained from SSSM/I and the rain sensors onboard the TRMM satellite. The precipitation radar (PR) onboard TRMM, which is the rain measuring instrument flown in space with the next best resolution, has a resolution of only 4 km. However, the disadvantage of SAR is that it is sometimes difficult to identify SAR signatures visible on SAR images of the sea surface unambiguously as caused by rain events. By comparing SAR images with simultaneously acquired weather radar images of the Hong Kong Observatory, a better knowledge of radar signatures on SAR images resulting from rain events over the ocean is obtained. This knowledge then helps greatly in detecting rain events on SAR images which are acquired over ocean areas, which are not in the reach of weather radar stations. SAR images containing radar signature of rain events allow a much more detailed study of fine-scale structures of rain events over the World’s ocean, in particular of clusters of rain cells, than any other sensor presently flown in space. Copyright ASPRS Numéro de notice : A2007-130 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.73.3.267 En ligne : https://doi.org/10.14358/PERS.73.3.267 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28493 [article]

A new method to determine near surface air temperature from satellite observations / Ranjit Singh in International Journal of Remote Sensing IJRS, vol 27 n°12-13-14 (July 2006)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 27 n°12-13-14 (July 2006) . - pp 2831 - 2846 Titre : A new method to determine near surface air temperature from satellite observations Type de document : Article/Communication Auteurs : Ranjit Singh, Auteur ; C.M. Kishtawal, Auteur Année de publication : 2006 Article en page(s) : pp 2831 - 2846 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] algorithme génétique [Termes IGN] image DMSP-SSM/I [Termes IGN] image NOAA-AVHRR [Termes IGN] température au sol [Termes IGN] température de surface de la mer [Termes IGN] température en altitude [Termes IGN] vapeur d'eau Résumé : (Auteur) We present a new method to determine the near surface air temperature (Ta) from satellite observations. The satellite observed parameters of total precipitable water (W), atmospheric boundary layer (~500 m) water vapour (Wb), and sea surface temperature (SST) are used to derive Ta. A genetic algorithm (GA) is used to find the optimum relation between the input (W, Wb, SST) and output (Ta) parameters. The input data consist of 6 years (1988–1993) of insTanTaneous as well as monthly averages of W, Wb from the Special Sensor Microwave Imager (SSM/I), and SST data from the Advanced Very High Resolution Radiometer (AVHRR). Ta observations based on Comprehensive Ocean Atmospheric Data Set (COADS) are used to develop and evaluate the new methodology. The global mean root mean square (rms) error for instantaneous Ta estimates is 1.4°C and for monthly averages it decreases to 0.74°C. Slightly higher discrepancies between Ta derived from the new method and in situ data are found over the western boundary currents (such as the Kuroshio and Gulf Stream) during wintertime. These regions are characterized by continental cold air outbreak and seasonal current systems, particularly during wintertime. During these conditions weak coupling between SST and Ta may be one of the reasons for large error over these regions. Our method improves upon the air temperature estimates of earlier studies. Copyright Taylor & Francis Numéro de notice : A2006-307 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160500195234 En ligne : https://doi.org/10.1080/01431160500195234 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28031 [article]

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Application of SeaWinds scatterometer and TMI-SSM/I rain rates to hurricane analysis and forecasting / R. Atlas in ISPRS Journal of photogrammetry and remote sensing, vol 59 n° 4 (June - July 2005)  

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Microwave land emissivity calculations using AMSU measurements / Fatima Karbou in IEEE Transactions on geoscience and remote sensing, vol 43 n° 5 (May 2005)  

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Mapping the atmospheric water vapor by integrating microwave radiometer and GPS measurements / P. Basili in IEEE Transactions on geoscience and remote sensing, vol 42 n° 8 (August 2004)  

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Modèle de nuage pour la restitution de paramètres microphysiques à partir de données satellitaires micro-ondes / Nathalie Dejour (1997)

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Atmospheric water vapour over oceans from SSM-I measurements / P. Schluessel in International Journal of Remote Sensing IJRS, vol 11 n° 5 (May 1990)  

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A multisensor approach to sea ice classification for the validation of DMSP-SSM-I passive microwave derived sea ice products / K. Steffen in Photogrammetric Engineering & Remote Sensing, PERS, vol 56 n° 1 (january 1990)  

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