# Presentation: 926767

## MODIS & VIIRS Calibration& Validation Proposal Overview

**MODIS & VIIRS Calibration****& Validation Proposal Overview**

- Chuck McClain, Gene Feldman, & the
- Ocean Biology Processing Group Staff
- NASA VIIRS-MODIS Joint Science Team Mtg
- Ocean Breakout Session
- May 14, 2008

**Notes:**
 monitoring harmful blooms from space gives coastal communities ability to take precautionary measures
 fishing bans
 beach closures
 image shows true color (top) and chlorophyll (bottom)  views of bloom in mouth of Mississippi
 similar information was used to monitor a red tide bloom off coast of Texas last fall

## Proposals & Activities

- “MODIS Aqua & Terra Calibration & Validation Analyses in Support of Ocean Products”
- C. McClain, PI; G. Feldman, Co-I
- Staff: Z. Ahmad, S. Bailey, B. Franz, E. Kwaitkowska, G. Meister, F. Patt, J. Werdell
- Activities:
- Maintain sensor calibrations (including vicarious using MOBY) in collaboration with MCST.
- Maintain processing S/W including HiRes module for routine processing & SeaDAS.
- Maintain SeaBASS support.
- Conduct product quality evaluations.
- Work with algorithm PIs on implementation & testing.
- Refine processing algorithms for coastal applications (SWIR-based aerosol correction, AERONET-based aerosol models) using Chesapeake Bay as test site.
- Evaluate methods for improving MODIS/Terra products
- Evaluate use of Calipso and Glory data on improving atmospheric corrections.

## Proposals & Activities

- “Evaluation of the VIIRS Sensor Performance and Operational NPOESS Ocean Product Algorithms”
- C. McClain, PI; G. Feldman, Co-I; W. Esaias, Co-I
- Staff: Z. Ahmad, S. Bailey, R. Barnes, G. Eplee, G. Meister, F. Patt, K. Turpie, J. Werdell
- Activities:
- Continue review of operational algorithms (calibration, bio-optical, masks/flags, SST) as implemented by NGST.
- Collaborate with NICST on prelaunch calibration & characterization analyses for NPP.
- Conduct product sensitivity analyses based on sensor calibration data.
- Develop a simulated data set using “best available” calibration, bio-optical, and atmospheric correction algorithms.
- Support NPP Project Scientist & Deputy PS and NPP Project Office and provide science team interface to Ocean PEATE.

## Related Publications, Past Year

**Related Publications, Past Year**

- Franz, B. A., S. W. Bailey, P. J. Werdell, and C. R. McClain, Sensor-independent approach to the vicarious calibration of satellite ocean color radiometry,  *Appl. Opt.*, 46(22), 5068-5082, 2007.
- Ahmad, Z., C. R. McClain, J. R. Herman, B. A. Franz, E. J. Kwaitkowska, W. D. Robinson, E. J. Bucsela, and M. Tzortziou, Atmospheric correction of NO2 in retrieving water-leaving reflectances from the SeaWiFS and MODIS measurements, *Appl. Opt.*, 46(26), 6504-6512, 2007.
- Werdell, P. J., S. W. Bailey, B. A. Franz, A. Morel, C. R. McClain, and S. B. Hooker, The on-orbit vicarious calibration of ocean color sensors using a sea surface reflectance model, *Appl. Opt.*, 46(23), 5649-5666, 2007.
- Gordon, H. R., B. A. Franz, Remote sensing of ocean color: Assessment of the water-leaving radiance bidirectional effects on the atmospheric diffuse transmittance for SeaWiFS and MODIS intercomparisons, *Remote Sens. Environ.*, 112, 2677-2685, 2008.
- Bailey, S. W., S. B. Hooker, D. Antoine, B. A. Franz, and P. J.  Werdell, Sources and assumptions for the vicarious calibration of ocean color satellite observations, *Appl. Opt*.  47, 2035-2045, 2008.
- Franz, B. A., E. J. Kwiatkowska, G. Meister, and C. R. McClain, Moderate Resolution Imaging Spectroradiometer on Terra: Limitations for Ocean Color Applications, *J. Appl. Remote Sens.,* in press.