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Sulfates, Clouds and Radiation America (SCAR-A) NASA ER-2 Moderate Resolution Imaging Spectrometer (MODIS) Airborne Simulator (MAS) Langley DAAC Data Set Document |
The primary objective of the SCAR-A experiment was to help scientists characterize the the relationship between sulfate particles and clouds' reflective properties. Sulfate aerosols are believed to provide condensation nuclei, resulting in smaller, more numerous droplets within a cloud.
SCAR-A (America) was the first in a series of experiments. It was followed by the SCAR-C experiment conducted over California in 1994. A third experiment, SCAR-B (Smoke, Clouds and Radiation-Brazil), was conducted in Brazil during August and September 1995.
This document provides information for the SCAR_A_ER2_MAS data set.
| SCAR_A_ER2_MAS: | Sulfates, Clouds and Radiation America (SCAR-A) NASA ER-2 Moderate Resolution Imaging Spectroradiometer (MODIS) Airborne Simulator (MAS) Data (SCAR_A_ER2_MAS) |
The MODIS Airbourne Simulator (MAS) is a modified Daedalus Wildfire scanning spectrometer which flies on a NASA ER-2 and provides spectral information similar to that which will be provided by the Moderate Resolution Imaging Spectroradiometer (MODIS), scheduled to be launched on the EOS-AM platform in 1998 (King et al. 1992). The principal investigators for the MAS are Dr. Michael King (NASA/GSFC, Greenbelt MD), and Dr. Paul Menzel (NOAA/NESDIS, Madison WI).
The MAS spectrometer acquires high spatial resolution imagery in the wavelength range of 0.55 to 14.3 microns. A total of 50 spectral bands are available in this range, and the digitizer can be configured to collect data from any 12 of these bands. The digitizer was configured with four 10-bit channels and seven 8-bit channels. The MAS spectrometer was mated to a scanner subassembly which collected image data with an IFOV of 2.5 mrad, giving a ground resolution of 50 meters from 20000 meters altitude, and a cross track scan width of 85.92 degrees. The data granules were written using the self documenting file storage format provided through the netCDF interface routines included in the HDF libraries.
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| FIRE_AX_ER2_MAS: | First ISCCP Regional Experiment (FIRE) Atlantic Stratocumulus Transition Experiment (ASTEX) NASA ER-2 Moderate Resolution Imaging Spectroradiometer (MODIS) Airborne Simulator (MAS) Data (FIRE_AX_ER2_MAS) |
| FIRE_CI2_ER2_MAS: | First ISCCP Regional Experiment (FIRE) Cirrus 2 NASA ER-2 Moderate Resolution Imaging Spectroradiometer (MODIS) Airborne Simulator (MAS) Data (FIRE_CI2_ER2_MAS) |
| SCAR_B_ER2_MAS: | Smoke, Clouds and Radiation Brazil (SCAR-B) NASA ER-2 Moderate Resolution Imaging Spectroradiometer (MODIS) Airborne Simulator (MAS) Data (SCAR_B_ER2_MAS) |
| Michael D. King, Ph. D. NASA Goddard Space Flight Center Code 900 Greenbelt, MD 20771 USA Phone: (301) 286-8228 FAX: (301) 286-1738 E-mail: king@climate.gsfc.nasa.gov |
Paul Menzel, Ph. D. NOAA/NESDIS 1225 W. Dayton St. Madion, WI 53706 USA Phone: (608) 263-4930 FAX: (608) 262-5974 E-mail: paulm@ssec.wisc.edu |
Sulfates, Clouds and Radiation America (SCAR-A) NASA ER-2 Moderate Resolution Imaging Spectroradiometer (MODIS) Airborne Simulator (MAS)
Paul A. Hubanks
Research ad Data Systems Corporation
7833 Walker Drive
Greenbelt, MD 20770
USA
Phone: (301) 982-3724
FAX: (301) 982-3749
E-mail: hubanks@ltpmail.gsfc.nasa.gov
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See MAS User's Guide.
See MAS User's Guide.
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| Data Set |
Min Lat |
Max Lat |
Min Lon |
Max Lon |
|---|---|---|---|---|
| SCAR_A_ER2_MAS | 35.02 | 44.54 | -99.97 | -79.75 |
None available.
50 meters (at 20 kilometers altitude)
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| Data Set |
Begin Date |
End Date |
|---|---|---|
| SCAR_A_ER2_MAS | 07-12-1993 | 07-29-1993 |
None available.
Each granule contains one flight track.
See MAS User's Guide.
A general description of data granularity as it applies to the IMS appears in the EOSDIS Glossary.
Each granule contains one flight track.
The data are in NCSA'S HDF/netCDF format.
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There are two browse images, infrared and visible, per granule.
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There are no plans to modify these data sets.
Sample read software are available for these data sets. The codes are written in C. A makefile and readme file are also available. These files allow users to compile and output the data.
The software can be obtained through the Langley DAAC User Services Office. Please refer to the contact information in Section 15. The software can also be ordered through the on-line system while ordering these data sets.
Langley DAAC User and Data Services Office
NASA Langley Research Center
Mail Stop 157D
Hampton, Virginia 23681-2199
USA
Telephone: (757) 864-8656
FAX: (757) 864-8807
E-mail: larc@eos.nasa.gov
Langley DAAC User and Data Services Office
NASA Langley Research Center
Mail Stop 157D
Hampton, Virginia 23681-2199
USA
Telephone: (757) 864-8656
FAX: (757) 864-8807
E-mail: larc@eos.nasa.gov
The data are available from the Langley Data Center web site.
The Langley DAAC will continue to archive these data sets. There are no plans to reprocess.
None available.
Arnold, G.T., M. Fitzgerald, P.S. Grant, and M.D. King, 1994a: MODIS Airborne Simulator Visible and Near-Infrared Calibration - 1991 FIRE-Cirrus Field Experiment. NASA Goddard Space Flight Center, NASA Technical Memorandum 104600.
Arnold, G.T., M. Fitzgerald, P.S. Grant, and M.D. King, 1994b: MODIS Airborne Simulator Visible and Near-Infrared Calibration - 1992 ASTEX Field Experiment. NASA Goddard Space Flight Center, NASA Technical Memorandum 104599.
Gumley, L.E., P.A. Hubanks, E.J. Masuoka, 1994: MODIS Technical Report Series: Volume 3, MODIS Airborne Simulator Level 1B Data User's Guide. NASA Goddard Space Flight Center, NASA Technical Memorandumn 104594.
Jedlovec, G.J., K.B. Batson, R.J. Atkinson, C.C. Moeller, W.P. Menzel, and M.W. James, 1989: Improved Capabilities of the Multispectral Atmospheric Mapping Sensor (MAMS). NASA Marshall Space Flight Center, NASA Technical Memorandum 100352.
King, M.D., Y.J. Kaufman, W.P. Menzel and D.Tanre, 1992: Remote sensing of cloud, aerosol, and water vapor Properties from the Moderate Resolution Imaging Spectrometer (MODIS). IEEE Trans. Geosci. Remote Sens., 30, 2-27.
King, M.D., W.P. Menzel, P.S. Grant, J.S. Myers, G.T. Arnold, S.E. Platnick, L.E. Gumley, S-C. Tsay, C.C. Moeller, M. Fitzgerald, K.S. Browsn and F.G. Osterwisch, 1996: Airborne Scanning Spectrometer for Remote Sensing of Cloud, Aerosol, Water Vapor, and Surface Properties. Journal of Atmospheric and Oceanic Technology, 13(4), 777-794.
