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Development of SMOS Levels 3 and 4 Sea Surface Salinity Maps

AutorBallabrera-Poy, Joaquim ; Font, Jordi ; Gabarró, Carolina ; Gourrion, Jérôme ; Hoareau, Nina ; Martínez, Justino ; Portabella, Marcos ; Umbert, Marta ; Turiel, Antonio
Fecha de publicación20-feb-2012
Citación2012 Ocean Sciences Meeting. Abstract book: 21 (2012)
ResumenSea surface salinity (SSS) maps are generated at the Spanish SMOS Level 3 and 4 Data Processing Centre (CP34) by using objective analysis interpolation (Level 3) and data fusion techniques which combine the SMOS data with other satellite observation types (e.g., AMSR-E sea surface temperature data or Aquarius SSS data). Present efforts on L3 at CP34 are focused on the application of Objetive Analysis on L2 data to produce L3 maps. The correlation matrices required by Objetive Analysis have been generated using different model outputs. Ongoing work on L4 production aims to data fusion techniques based on the use of singularity analysis to exploit data synergy. Singularity analysis gives a numerical estimate of the local regularity (singularity exponents) of an ocean variable at each point. It has been argued that all ocean variables have the same singularity exponents at all the points, as singularity exponents are a characteristic of the flow, not specific to the variable. The information provided by singularity exponents is then used to reconstruct SSS fields satisfying the multi-scale characteristics of geophysical flows. Data fusion of SMOS with microwave SST, surface chlorophyll concentration, and Aquarius data are calculated. L3 and L4 maps are validated with near-surface measurements provided by Argo profilers. We have found that the implementation of these techniques significantly improve data accuracy with respect to L2 maps
Descripción2012 Ocean Sciences Meeting, 20-24 February 2012, Salt Lake City, Utah, USA
Versión del editorhttp://www.sgmeet.com/osm2012/
Aparece en las colecciones: (UTM) Comunicaciones congresos
(ICM) Comunicaciones congresos
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