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Figure 1. VIIRS/NPP Surface Reflectance.
The NASA VIIRS products are currently in development. Land discipline NASA VIIRS data products will be available from the Land Processes Distributed Active Archive Center (LP DAAC) when product development has concluded. The LP DAAC will make future announcements as these data become available.
VIIRS is one of five instruments on-board the Suomi National Polar-orbiting Partnership (NPP) satellite launched from Vandenberg Air Force Base on October 28, 2011 at 5:48 a.m. EDT. NPP is the first in a series of three Joint Polar Satellite System (JPSS) satellites, a collaborative mission between the National Oceanic and Atmospheric Administration (NOAA) and National Aeronautics and Space Agency (NASA) that will carry the VIIRS instrument.
VIIRS observes the entire Earth’s surface twice each day from NPP’s polar orbit 824 km (512 miles) above the Earth’s surface. The 3,000 km swath width of the VIIRS instrument, which is 710 km greater than that of MODerate Resolution Imaging Spectroradiometer (MODIS), allows for no gaps in coverage, figure 1, similar to those observed in MODIS near the equator. The VIIRS instrument measures 22 spectral bands at two spatial resolutions, 375 m and 750 m, which are resampled to 500 m, 1 km, and 0.05 degrees in the NASA produced* Earth System Data Records (ESDRs) to promote consistency with the MODIS heritage.
More information about VIIRS Land Products is available at http://viirsland.gsfc.nasa.gov/index.html.
* NOAA produced Environmental Data Records (EDRs) will be distributed through NOAA channels rather than the LP DAAC.