Airborne Multi-angle Imaging SpectroRadiometer (AirMISR) Data from the Snow and Ice 2001 CampaignEntry ID: AIRMISR_SNOW_ICE_2001
Abstract: The AIRMISR_SNOW_ICE_2001 data were acquired during the Colorado snow albedo field experiment in the Yampa Valley of Colorado during February and March, 2001. This experiment focused on snow albedo and atmospheric characterization as part of a validation effort for estimating snow albedo from the Multiangle Imaging SpectroRadiometer (MISR) and the Moderate Resolution Imaging Spectroradiometer ... (MODIS) data. The validation site is located at 40.4N, 106.8W, just south of Steamboat Springs, Colorado. AirMISR and MODIS Airborne Simulator (MAS) data were collected on March 8, 2001.
The Airborne Multi-angle Imaging SpectroRadiometer (AirMISR) is an airborne instrument for obtaining multi-angle imagery similar to that of the satellite-borne Multi-angle Imaging SpectroRadiometer (MISR) instrument, which is designed to contribute to studies of the Earth's ecology and climate. AirMISR flies on the NASA ER-2 aircraft. The Jet Propulsion Laboratory in Pasadena, California built the instrument for NASA.
Unlike the satellite-borne MISR instrument, which has nine cameras oriented at various angles, AirMISR uses a single camera in a pivoting gimbal mount. A data run by the ER-2 aircraft is divided into nine segments, each with the camera positioned to a MISR look angle. The gimbal rotates between successive segments, such that each segment acquires data over the same area on the ground as the previous segment. This process is repeated until all nine angles of the target area are collected. The swath width, which varies from 11 km in the nadir to 32 km at the most oblique angle, is governed by the camera's instantaneous field-of-view of 7 meters cross-track x 6 meters along-track in the nadir view and 21 meters x 55 meters at the most oblique angle. The along-track image length at each angle is dictated by the timing required to obtain overlap imagery at all angles, and varies from about 9 km in the nadir to 26 km at the most oblique angle. Thus, the nadir image dictates the area of overlap that is obtained from all nine angles. A complete flight run takes approximately 13 minutes.
The 9 camera viewing angles are:
0 degrees or nadir
26.1 degrees, fore and aft
45.6 degrees, fore and aft
60.0 degrees, fore and aft
70.5 degrees, fore and aft
For each of the camera angles, images are obtained at 4 spectral bands. The spectral bands can be used to identify vegetation and aerosols, estimate surface reflectance and ocean color studies.
The center wavelengths of the 4 spectral bands are:
443 nanometers, blue
555 nanometers, green
670 nanometers, red
865 nanometers, near-infrared
Two types of AirMISR data products are available - the Level 1 Radiometric product (L1B1) and the Level 1 Georectified radiance product (L1B2).
Start Date: 2001-03-08Stop Date: 2001-03-08
Latitude Resolution: 27.5 Meter
Longitude Resolution: 27.5 Meter
Horizontal Resolution Range: 1 meter - < 30 meters
ISO Topic Category
Data Set Progress
Phone: (818) 354-4956
Email: Carol.J.Bruegge at jpl.nasa.gov
Jet Propulsion Laboratory Mail Stop 169-237 4800 Oak Grove Drive
Province or State: CA
Postal Code: 91109
Role: DIF AUTHOR
Email: support-asdc at earthdata.nasa.gov
NASA Langley Atmospheric Science Data Center User and Data Services NASA Langley Research Center Mail Stop 157D
Province or State: VA
Postal Code: 23681-2199
Bruegge, Carol J., Wedad A. Abdou, Nadine L. Chrien, Barbara J. Gaitley
(1998). AirMISR spectral and radiometric performance studies. In Earth
Observing System III, Proc. SPIE 3439, San Diego, CA, 19-21 July.
Bruegge, C. J., N. L. Chrien, R. A. Kahn, J. V. Martonchik, David Diner
(1998). MISR radiometric uncertainty analyses and their ... utilization
within geophysical retrievals. Conference issue: New Developments and
Applications in Optical Radiometry (NEWRAD '97), Metrologia., 35, 571-579.
Bruegge, C. J., V. G. Duval, N. L. Chrien, R. P. Korechoff, B. J. Gaitley,
and E. B. Hochberg (1998). MISR prelaunch instrument calibration and
characterization results. IEEE Trans. Geosci. Rem. Sens., Vol. 36, pp.
Chrien, Nadine L., Carol J. Bruegge, Barbara J. Gaitley (2000). AirMISR
laboratory calibration and in-flight performance results. Submitted
to Remote Sens. Environment, December 1998.
Diner, David J., et al. (1998). The Airborne Multi-Angle Imaging
SpectroRadiometer (AirMISR): Instrument Description and First Results.
IEEE Trans. Geosci. Rem. Sens., Vol. 36, No. 4.
Extended Metadata Properties
(Click to view more)
Creation and Review Dates
DIF Creation Date: 2001-06-29
Last DIF Revision Date: 2014-04-07