The MISR Oblique Forward (CF) camera views the Earth in a 360-km-wide swath, centered on the flight path but at a look angle of 60 degrees forward of nadir.

The Earth's surface is imaged in four wavelengths (blue, green, red, near-IR). Images at each angle are obtained in four spectral bands centered at 446, 558, 672, and 866 nm.

Click here for MISR Camera Definitions

The DIAL tool provides digital image processing to display the metadata as text and the processed data as an image.

Each sample is a subset of the MISR Oblique Forward (CF) GRP data set.

ID for Data Product Provided on This CD	ID for LaRC DAAC Database (to order full granule)	ID for DIAL site: Terra Sampler #1
MISR_TER_CF.sub	MISR_AM1_GRP_TERRAIN _GM_P040_CF.hdf	MISR_AM1_GRP_TERRAIN _GM_P040_CF
Not Provided	MISR_AM1_GRP_ELLIPSOID _GM_P040_CF.hdf	MISR_AM1_GRP_ELLIP _GM_P040_CF

The sample data are subset from the Oblique Forward (CF) granule (the Oblique Forward (CF) camera) for 3 blocks (Numbers 54, 55 and 56) from orbit 3734, path 40, on August 30, 2000. The data file for the red band is larger because the data correspond to the higher spatial sampling rate of 275 m per pixel while the other bands have a spatial sampling rate of 1.1 km. Each block is 2048 samples across-track and 512 lines along-track in 275 m sampling (512 pixels by 128 pixels at 1.1 km), with four spectral bands as separate Scientific Data Sets (SDSs).

The difference between L1B2 Ellipsoid and Terrain georectified radiances is in the altitude data used in the resampling algorithm. In the Ellipsoid product, this altitude is represented by the WGS84 ellipsoid. In the Terrain product, it is the altitude of the Earth's terrain.

The white dots within the thumbnail images are fill data, representing areas on the Space Oblique Mercator (SOM) grid that could NOT be observed by the CF camera, due to its 60-degree forward look angle. This artifact of the TERRAIN-projected data is minimal in flat areas and does not appear in ELLIPSOID-projected data.

The data subset covers the central part of the U.S. state of Idaho (Sawtooth Mountains and Snake River Plains), with adjacent parts of Montana (Bitterroot Range), and of Wyoming (under the clouds). Areas of interest include many national forests (Bitterroot, Boise, Challis, Nez Perce, Payette, Salmon, Sawtooth, Targhee), national monuments (Craters of the Moon, Hagerman Fossil Beds), and wilderness areas.

The sample includes clear sky areas, areas with clouds, and areas with wildfire smoke and haze. Block #56 has it all: urban area (Boise, ID), lakes, rivers, sagebrush rangeland and farmland (Snake River Plains), lava flows, forested mountains, alpine mountains, granite ridges, talus slopes, alluvial fans, fire-burned areas, burning fires, smoke and haze, cloud shadows and at least two types of clouds. The user wishing to read about this area as it was in 1900 is referred to the first few chapters of the U.S. Geological Survey Bulletin 199 (Russell, 1902, Geology and Water Resources of the Snake River Plains of Idaho).

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