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Título: | Development of SMOS Levels 3 and 4 Sea Surface Salinity Maps |
Autor: | Ballabrera-Poy, Joaquim CSIC ORCID ; Font, Jordi CSIC ORCID CVN; Gabarró, Carolina CSIC ORCID ; Gourrion, Jérôme CSIC; Hoareau, Nina CSIC ORCID ; Martínez, Justino CSIC ORCID ; Portabella, Marcos CSIC ORCID ; Umbert, Marta CSIC ORCID ; Turiel, Antonio CSIC ORCID | Fecha de publicación: | 20-feb-2012 | Citación: | 2012 Ocean Sciences Meeting. Abstract book: 21 (2012) | Resumen: | Sea 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 | Descripción: | 2012 Ocean Sciences Meeting, 20-24 February 2012, Salt Lake City, Utah, USA | URI: | http://hdl.handle.net/10261/93984 |
Aparece en las colecciones: | (UTM) Comunicaciones congresos (ICM) Comunicaciones congresos |
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