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Extrapolation of the aerosol reflectance from the near-infrared to the visible : the single-scattering epsilon vs multiple-scattering epsilon method / M. Wang in International Journal of Remote Sensing IJRS, vol 25 n° 18 (September 2004)
[article]
Titre : Extrapolation of the aerosol reflectance from the near-infrared to the visible : the single-scattering epsilon vs multiple-scattering epsilon method Type de document : Article/Communication Auteurs : M. Wang, Auteur Année de publication : 2004 Article en page(s) : pp 3637 - 3650 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] aérosol
[Termes IGN] atmosphère terrestre
[Termes IGN] bande visible
[Termes IGN] correction atmosphérique
[Termes IGN] correction d'image
[Termes IGN] diffusion du rayonnement
[Termes IGN] exitance spectrale
[Termes IGN] image Seawifs
[Termes IGN] radiance
[Termes IGN] rayonnement proche infrarougeRésumé : (Auteur) In the atmospheric correction algorithm for Sea-viewing Wide Fieldof-view Sensor, the effects of the spectral variation of the aerosol radiance contributions at the two near-infrared (NIR) bands are estimated directly from sensor-measured radiance. The aerosol effects at the NIR are then extrapolated into, the visible through a process of aerosol model selection from evaluation of the NIR single-scattering epsilon value, which is defined as the ratio of the single-scattering aerosol reflectance between two NIR bands. The aerosol radiance contribution at the visible wavelengths is then removed. In this paper, a slightly different approach in the aerosol model selection and extrapolation, i.e. using the NIR multiple-scattering epsilon instead of the single-scattering epsilon, is examined. The NIR multiple-scattering epsilon is the ratio of the aerosol multiple-scattering reflectance between two NIR wavelengths. Simulations show that, in general, both methods give comparable results. Statistically, more than 95% of cases in the retrieved ocean colour spectrum are within required accuracy for both methods. For clear atmosphere, however, the results of the atmospheric correction using the single-scattering epsilon method usually performed slightly better than the multiple-scattering epsilon method. On the other hand, for the large aerosol optical thickness the multiple-scattering epsilon method has slightly better retrievals for the Tropospheric aerosols. Some detailed analyses and discussions are provided to explain differences in these two approaches for extrapolating and retrieving the aerosol effects in the visible. Numéro de notice : A2004-355 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160310001619599 En ligne : https://doi.org/10.1080/01431160310001619599 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26882
in International Journal of Remote Sensing IJRS > vol 25 n° 18 (September 2004) . - pp 3637 - 3650[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-04161 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Satellite constellation with direct radio measurements for atmospheric studies : WATS mission case / G. Alberti in International Journal of Remote Sensing IJRS, vol 25 n° 18 (September 2004)
[article]
Titre : Satellite constellation with direct radio measurements for atmospheric studies : WATS mission case Type de document : Article/Communication Auteurs : G. Alberti, Auteur ; G.B. Amata, Auteur ; F. Amisano, Auteur Année de publication : 2004 Article en page(s) : pp 3703 - 3730 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Missions spatiales
[Termes IGN] Agence spatiale européenne
[Termes IGN] antenne
[Termes IGN] distribution spatiale
[Termes IGN] étude de faisabilité
[Termes IGN] mission spatiale
[Termes IGN] onde radioélectrique
[Termes IGN] orbite basse
[Termes IGN] positionnement par GNSS
[Termes IGN] radiooccultation
[Termes IGN] rayonnement électromagnétique
[Termes IGN] rayonnement radioélectrique
[Termes IGN] récepteur
[Termes IGN] réfraction atmosphérique
[Termes IGN] stratosphère
[Termes IGN] teneur en vapeur d'eau
[Termes IGN] transmission de données
[Termes IGN] troposphère
[Termes IGN] vapeur d'eau
[Termes IGN] vent
[Termes IGN] Water Vapour and Wind in Atmospheric Troposphere and StratosphereRésumé : (Auteur) This paper shows the main results of a pre-feasibility study commissioned by the European Space Agency (ESA) in the framework of the Earth Explorer Core Mission programme. The analysed mission is called WATS (Water vapour and wind in Atmospheric Troposphere and Stratosphere) and aims to monitor variations and changes in the global atmospheric water vapour distribution and lower-stratosphere/upper-troposphere winds. Starting from a set of scientific requirements, the present work shows the main results of the mission analysis in terms of the number and spatial distribution of possible measurements. By performing trade-off with respect to expected values, the number of satellites forming the constellation has been fixed as well as the main orbital parameters, also taking into account degradations within the maximum expected mission lifetime. To assess the accuracy of the final measurement, a suitable performance model has been established that takes into account the effects of both the radio propagation of the signal through the atmosphere and the instrument receiving chain. The results obtained by running such a performance model are presented and discussed in order to assess the main system parameters mainly in terms of minimum transmitted power. Following, a sensitivity analysis is presented that shows the effects of antenna pointing error, receiver gain fluctuation, effective antenna size and pre-detection bandwidth. Numéro de notice : A2004-357 Affiliation des auteurs : non IGN Thématique : IMAGERIE/POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160410001680392 En ligne : https://doi.org/10.1080/01431160410001680392 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26884
in International Journal of Remote Sensing IJRS > vol 25 n° 18 (September 2004) . - pp 3703 - 3730[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-04161 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Nighttime polar cloud detection with MODIS / Y. Liu in Remote sensing of environment, vol 92 n° 2 (15/08/2004)
[article]
Titre : Nighttime polar cloud detection with MODIS Type de document : Article/Communication Auteurs : Y. Liu, Auteur ; J.R. Key, Auteur ; et al., Auteur Année de publication : 2004 Article en page(s) : pp 181 - 194 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] Antarctique
[Termes IGN] Arctique
[Termes IGN] climat froid
[Termes IGN] climat terrestre
[Termes IGN] détection
[Termes IGN] dioxyde de carbone
[Termes IGN] données lidar
[Termes IGN] image Aqua-MODIS
[Termes IGN] image radar
[Termes IGN] image Terra-MODIS
[Termes IGN] luminance lumineuse
[Termes IGN] modèle de transfert radiatif
[Termes IGN] nuage
[Termes IGN] seuillage d'image
[Termes IGN] vapeur d'eauRésumé : (Auteur) Cloud detection is the first step in studying the role of polar clouds in the global climate system with satellite data. In this paper, the cloud detection algorithm for the Moderate Resolution Imaging Spectrometer (MODIS) is evaluated with model simulations and satellite data collocated with radar/lidar observations at three Arctic and Antarctic stations. Results show that the current MODIS cloud mask algorithm performs well in polar regions during the day but does not detect more than 40% of the cloud cover over the validation sights at night. Two new cloud tests utilizing the 7.2 um water vapor and 14.2 um carbon dioxide bands, one new clear-sky test using the 7.2 um band, and changes to the thresholds of several other tests are described. With the new cloud detection procedure, the misidentification of cloud as clear decreases from 44.2% to 16.3% at the two Arctic stations, and from 19.8% to 2.7% at the Antarctic station. Numéro de notice : A2004-333 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2004.06.004 En ligne : https://doi.org/10.1016/j.rse.2004.06.004 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26860
in Remote sensing of environment > vol 92 n° 2 (15/08/2004) . - pp 181 - 194[article]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)
[article]
Titre : Mapping the atmospheric water vapor by integrating microwave radiometer and GPS measurements Type de document : Article/Communication Auteurs : P. Basili, Auteur ; S. Bonafoni, Auteur ; et al., Auteur Année de publication : 2004 Article en page(s) : pp 1657 - 1665 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] analyse comparative
[Termes IGN] capteur imageur
[Termes IGN] données GPS
[Termes IGN] effet atmosphérique
[Termes IGN] image DMSP-SSM/I
[Termes IGN] image Météosat
[Termes IGN] interpolation
[Termes IGN] krigeage
[Termes IGN] Méditerranée, mer
[Termes IGN] précipitation
[Termes IGN] télédétection en hyperfréquence
[Termes IGN] vapeur d'eauRésumé : (Auteur) This paper deals with a procedure to generate maps of the Integrated Precipitable Water Vapor (IPWV) over the Mediterranean area by using estimates from a global positioning system (GPS) network over land and from the Special Sensor Microwave/Imager (SSM/I) over sea. In particular, we investigate the application of the Kriging geostatistical technique to obtain regularly spaced IPWV values. The horizontal spatial structure r water vapor retrieved by SSM/I is explored by computing-variograms that provide a measure of dissimilarity between pairs IPWV values for the region of interest. Because the water vapor density decreases with height, the GPS station elevation - accounted for in the interpolation procedure. In this respect, the potential of the Kriging with external drift relative to the linary Kriging is evaluated by applying a test based on the validation approach.The case studies are presented and qualitatively compared to the corresponding Meteosat infrared images. A quantitative comparison with an independent source of information, such as IPWV computed from radiosonde observations and from European Centre for Medium-Range Weather Forecasts only, is also performed. Numéro de notice : A2004-388 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2004.830943 En ligne : https://doi.org/10.1109/TGRS.2004.830943 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26915
in IEEE Transactions on geoscience and remote sensing > vol 42 n° 8 (August 2004) . - pp 1657 - 1665[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-04081 RAB Revue Centre de documentation En réserve L003 Disponible Atmospheric correction of Advanced Very High Resolution Radiometer imagery / Mhd. Suhyb Salama in International Journal of Remote Sensing IJRS, vol 25 n° 7 (April 2004)
[article]
Titre : Atmospheric correction of Advanced Very High Resolution Radiometer imagery Type de document : Article/Communication Auteurs : Mhd. Suhyb Salama, Auteur ; J. Monbaliu, Auteur ; P. Coppin, Auteur Année de publication : 2004 Article en page(s) : pp 1349 - 1355 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] acquisition de données
[Termes IGN] aérosol
[Termes IGN] bande rouge
[Termes IGN] image NOAA-AVHRR
[Termes IGN] transformation orthogonaleRésumé : (Auteur) The present paper proposes an automated approach to estimate the aerosol reflectance at the Advanced Very High Resolution Radiometer (AVHRR) red channel. The aerosol dominant pixels were separated through two orthogonal transforms. The aerosol reflectance ratio at these pixels was esti-mated through regression. The results are validated with in situ measurements. The retrieved water-leaving reflectance matched the modelled values with a relative error below 45%. The smallest error values were at the stations with the closest sampling time to image acquisition. However, a weak correlation of 16% was found between water-leaving reflectance and aerosol signals, This suggested that these errors could be attributed to the spatial and temporal variability between the two sampling methods (ship measurement and pixel reflectance). Numéro de notice : A2004-093 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160310001592283 En ligne : https://doi.org/10.1080/01431160310001592283 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26620
in International Journal of Remote Sensing IJRS > vol 25 n° 7 (April 2004) . - pp 1349 - 1355[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-04071 RAB Revue Centre de documentation En réserve L003 Exclu du prêt The determination of the atmospheric optical thickness over western Europe using SeaWiFS imagery / A.A. Kokhanovsky in IEEE Transactions on geoscience and remote sensing, vol 42 n° 4 (April 2004)PermalinkGPS water vapor project associated to the ESCOMPTE programme: description and first results of the field experiment / Olivier Bock in Physics and chemistry of the Earth (A/B/C), vol 29 n° 2-3 ([01/03/2004])PermalinkGPS based determination of the integrated and spatially distributed water vapor in the troposphere / Marc Troller (2004)PermalinkOptical remote sensing / W.G. Egan (2004)PermalinkRetrieval of atmospheric water vapour using a ground-based single-channel microwave radiometer / P. Jarlemark in International Journal of Remote Sensing IJRS, vol 24 n° 19 (October 2003)PermalinkQuantitative assessment of a haze suppression methodology for satellite imagery: effect on land cover classification performance / Y. Zhang in IEEE Transactions on geoscience and remote sensing, vol 41 n° 5 (May 2003)PermalinkDéveloppement d'un lidar Raman pour le sondage de la vapeur d'eau et la correction des délais troposphériques en GPS / Olivier Bock in Bulletin d'information scientifique et technique de l'IGN, n° 74 (mars 2003)PermalinkRetrievals of low integrated water vapor using MIR and SSM/T-2 measurements / J.R. Wang in IEEE Transactions on geoscience and remote sensing, vol 41 n° 3 (March 2003)PermalinkCloud and aerosol properties, precipitable water, and profiles of temperature and water vapor from MODIS / M.D. King in IEEE Transactions on geoscience and remote sensing, vol 41 n° 2 (February 2003)PermalinkImpact of contextual information integration on pixel fusion / Sophie Fabre in IEEE Transactions on geoscience and remote sensing, vol 40 n° 9 (September 2002)Permalink