HR: 14:25h
AN: B43E-04 INVITED [Abstracts]
TI: A long-term land data record from AVHRR, MODIS and VIIRS.
AU: * Saleous, N Z
EM: nazmi.saleous@gsfc.nasa.gov
AF: SAIC, NASA GSFC
Code 614.5, Greenbelt, MD 20771
United States
AU: Vermote, E
B43E-04
AF: UMD, 4321 Hartwick Rd.
Suite 209
, College Park, MD 20740
United States
AU: Masuoka, E
B43E-04
AF: NASA GSFC, Code 614.5, Greenbelt, MD 20771
United States
AU: Privette, J
B43E-04
AF: NASA GSFC, Code 614.5, Greenbelt, MD 20771
United States
AU: Roy, D
B43E-04
AF: UMD, 4321 Hartwick Rd.
Suite 209
, College Park, MD 20740
United States
AU: Tucker, C
B43E-04
AF: NASA GSFC, Code 614.5, Greenbelt, MD 20771
United States
AU: Pinzon, J
B43E-04
AF: SSAI, NASA GSFC
Code 614.4, Greenbelt, MD 20771
United States
AU: Prince, S
B43E-04
AF: UMD, 4321 Hartwick Rd.
Suite 209
, College Park, MD 20740
United States
AB:
As a first step toward creating a land surface long-term data record from AVHRR, MODIS and VIIRS, we have reprocessed 24
years worth of AVHRR data (1981-2004) using algorithms based on improvements identified in the AVHRR Pathfinder 2 project and
on the knowledge gained from the MODIS surface reflectance activity. In this presentation, we will describe the different
steps in the processing chain and the expected improvement over publicly available AVHRR data sets.
Coincident MODIS data starting in February 2000 offer an invaluable asset in evaluating and assesing the accuracy of the
newly created AVHRR data set. We will present preliminary results derived from the comparison of AVHRR and MODIS coarse
resolution surface reflectance. They include an assessment of the AVHRR vicarious calibration approach and the impact of
limited atmospheric correction of on the accuracy of the AVHRR surface reflectance and NDVI products. We plan to use the
coincident MODIS acquisitions to further refine the atmospheric correction of AVHRR data and reduce the inaccuracies due to
this process. We will conclude with a discussion of the issues related to data harmonization across the different
instruments.
DE: 0434 Data sets
DE: 0480 Remote sensing
DE: 1895 Instruments and techniques: monitoring
SC: Biogeosciences [B]
MN: Fall Meeting 2005