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Climate & Radiation
Geodesy and Geophysics
Wallops Field Support
Branch Seminar Series: Mary Elizabeth Russ
NASA The Calibration and Validation Office (CVO)
Monday, July 28, 2008 - 23:30
The Calibration and Validation Office (CVO) at NASA Goddard Space Flight Center (GSFC) has established a comprehensive and long-term program for calibrating and validating satellite data. Two main tasks of the plan, a calibration and validation component and a satellite data processing component, form the internal core goals. Supplemental aspects of the program are interdependent, and are visualized as an external, core-connecting ring radiating from these two main internal core objectives. Various projects have been formulated and executed to meet the projected core components and peripheral aspects of the plan. Four activities, within the program, are emphasized here, to illustrate the multifaceted and dynamic nature of the CVO mission. The CVO Laboratory for the Analysis of Bio-Optical Sampling (C-LABS) is being designed to incorporate both optical and biogeochemical measurement collection and analyses, in order to provide sufficient validation of remotely-sensed data via coincidental in-water or above-water radiometry and in situ biogeochemical samples. Extensive field campaigns are required to meet this C-LABS objective – notably, the recent (February 4-March 17, 2008) participation in the Climate Variability and Predictability (CLIVAR) cruise within the Southern Ocean. A main goal of this cruise was to obtain high-quality optical data in high latitude regions, areas of the ocean lacking high-quality data representation in the SeaWiFS Bio-Optical Archive and Storage System (SeaBASS) database. Working groups and round-robins are additional integral activities of the CVO. Examples of each, respectively, are the Investigations of Marine Pigment Absorption Coefficients with Traceability (IMPACT) working group, and the SeaWiFS High Performance Liquid Chromatography (HPLC) Analysis Round-Robin Experiment (SeaHARRE-4) activity. The former was created to recalculate and characterize absorption coefficients for marine pigments, and the latter to continue the evaluation of uncertainty budgets and performance metrics of marine pigment HPLC analysis, with an emphasis on coastal ecosystems.