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Diurnal variations in AVHRR SST [sea surface temperature] fields: a strategy for removing warm layer effects from daily images / B.B. Nardelli in Remote sensing of environment, vol 95 n° 1 (15/03/2005)  

Public [article]  inRemote sensing of environment > vol 95 n° 1 (15/03/2005) . - pp 47 - 56 Titre : Diurnal variations in AVHRR SST [sea surface temperature] fields: a strategy for removing warm layer effects from daily images Type de document : Article/Communication Auteurs : B.B. Nardelli, Auteur ; S. Marullo, Auteur ; R. Santorelli, Auteur Année de publication : 2005 Article en page(s) : pp 47 - 56 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] correction radiométrique [Termes IGN] données météorologiques [Termes IGN] image NOAA-AVHRR [Termes IGN] insolation [Termes IGN] température de surface de la mer [Termes IGN] variation diurne [Termes IGN] vent Résumé : (Auteur) Different methodologies to estimate the amplitude of the sea surface temperature diurnal variation (DV) and remove it from remotly sensed SST images have been proposed in the last years. Among these, the parametrization proposed by Stuart-Menteth et al. (2004a, b) [...] published by the International GHRSST-PP Project-Office pp.241 appeared as the most promising. In fact, it takes into account wind and insolation variations during the day, that effectively drive the SST diurnal cycle. This parametrization has been tested on 6 months of NOAA-16 AVHRR images acquired and processed at CNR with Pathfinder algorithm. The tests evidenced some limits for a correct estimation of the DV in low-wind regimes for any insolation condition, and high insolation regimes (>600 W/m2 ) when the wind intensity increases of more than 2m/s during the morning. The limits of applicability of DV correction to NOAA-16 AVHRR data (at least for the Mediterranean area) were thus identified, and data outside these limits were flagged. However, some anomalous heating were not corrected even with these constraints, due to the lack of accuracy in the wind field used for the correction. As result, a strategy to flag residual outliers in the corrected daily images has been developed, based on the comparison to an optimally interpolated night SSt field of the previous day. Numéro de notice : A2005-089 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2004.12.005 En ligne : https://doi.org/10.1016/j.rse.2004.12.005 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27227 [article]