MISR Level 1B2 Ellipsoid Data (MI1B2E_V3)

Diner, David J.

NASA NTRS · 20080012188

MISR Level 1B2 Ellipsoid Data (MI1B2E_V3)

Abstract

The MISR instrument consists of nine pushbroom cameras which measure radiance in four spectral bands. Global coverage is achieved in nine days. The cameras are arranged with one camera pointing toward the nadir, four cameras pointing forward and four cameras pointing aftward. It takes 7 minutes for all nine cameras to view the same surface location. The view angles relative to the surface reference ellipsoid, are 0, 26.1, 45.6, 60.0, and 70.5 degrees. The spectral band shapes are nominally gaussian, centered at 443, 555, 670, and 865 nm. The Ellipsoid product is referenced to the World Geodetic System 1984 (WGS84) ellipsoid, which approximates the Earth's shape at sea level. In this product, the radiances and associated altitudes are projected to the ellipsoid, so that higher elevation data appear displaced from their true location for non-nadir camera views, much as they are seen by the instrument. (A cloud at location F, or a mountain top at location T in the image below appears as if it is at location E.) The more oblique the camera view, or the higher in altitude the feature, the more displaced the elevated data will appear. This displacement is used to advantage in MISR stereo retrievals, and this product is the primary input to Level 2 top-of-atmosphere/cloud processing. [Temporal_Coverage: Start_Date=2000-02-24; Stop_Date=] [Spatial_Coverage: Southernmost_Latitude=-90; Northernmost_Latitude=90; Westernmost_Longitude=-180; Easternmost_Longitude=180] [Data_Resolution: Latitude_Resolution=563.2 km (cross-track); Longitude_Resolution=140.8 km (along-track); Temporal_Resolution=about 15 orbits/day; Temporal_Resolution_Range=about 15 orbits/day].

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TOA AM-1 RADIANCE SPECTRAL BANDS NEAR IR IMAGERY NEAR IR WAVELENGTHS IMAGERY SURFACE PROJECTED TOA RADIANCE VISIBLE WAVELENGTHS ISO_Topic_Category: IMAGERY/BASE MAPS/EARTH COVER VISIBLE IMAGERY MULTI-ANGLE IMAGING SPECTRORADIOMETER (MISR)

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BibTeX RIS

Diner, David J.. MISR Level 1B2 Ellipsoid Data (MI1B2E_V3). https://ntrs.nasa.gov/citations/20080012188

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