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	Provedor de dados ArchiMer (2) Autor Femenias, P (2) Tran, N (2) Ardhuin, Fanny (1) Ezraty, Robert (1) Feng, H (1) Tournadre, Jean (1) Mais... Palavra-chave Altimetry (2) Remote sensing (2) Microwave measurements (1) Radar cross sections (1) Rain (1) Sea ice (1) Mais... Tipo do documento Text (2) Ano 2009 (1) 2008 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Defining a Sea Ice Flag for Envisat Altimetry Mission ArchiMer Tran, N; Ardhuin, Fanny; Ezraty, Robert; Feng, H; Femenias, P. This letter presents the development of a sea ice flag algorithm for the Envisat altimetry mission to detect sea ice corrupted sea surface height data within quality control processing. The algorithm takes advantage of having both passive and active microwave sensors on the same platform with coregistered measurements. Its performances have been evaluated based on collocations between the along-track Envisat data with reference maps built from combination of daily grids of sea ice concentration from SSM/I sensors and backscatter cross section from SeaWinds scatterometer on QuikSCAT satellite. Tipo: Text Palavras-chave: Sea ice; Remote sensing; Microwave measurements; Altimetry. Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-5289.pdf Validation of Envisat Rain Detection and Rain Rate Estimates by Comparing With TRMM Data ArchiMer Tran, N; Tournadre, Jean; Femenias, P. This letter provides validation results on both Envisat altimeter rain detection flag and rain rate estimates. This assessment was performed based on 18-month collocated data sets between Envisat with two sensor measurements from the Tropical Rainfall Measuring Mission, i.e., the microwave imager and the precipitation radar. Along with the comparison between closest sensor measurements with strict spatial and temporal criteria, discussion is also provided on environmental context insight when interpreting comparison results based on collocated data. Tipo: Text Palavras-chave: Remote sensing; Rain; Radar cross sections; Altimetry. Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4719.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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