NASA Scientific and Technical Aerospace Reports

Commercial Instrument Validation Laboratory (CIVL), and 3) In-Flight Verification & Validation Network (IVVN). All
three laboratories are described in this viewgraph presentation, which covers the characterization of CCD cameras,
hyperspectral sensors, ground reference equipment, and the Multispectral Thermal Imager (MTI). The presentation also
includes sections on thermal modeling, measurements taken from a float, and the Scientific Data Purchase (SDP) Program. The
section of the SDP profiles four data providers: 1) EarthSat; 2) Intermap; 3) Positive Systems; 4) Space Imaging.
CASI
Remote Sensors; Characterization; CCD Cameras; Multispectral Band Scanners; Infrared Imagery
20040070825 NASA Goddard Space Flight Center, Greenbelt, MD, USA
Monitoring Air Quality from Space using AURA Data
Gleason, James F.; Chance, Kelly V.; Fishman, Jack; Torres, Omar; Veefkind, Pepijn; [2003]; 2 pp.; In English; Fall AGU
2003 Meeting, 8-12 Dec. 2003, San Francisco, CA, USA; No Copyright; Avail: Other Sources; Abstract Only
Measurements from the Earth Observing System (EOS) AURA mission will provide a unique perspective on air quality
monitoring. Ozone, nitrogen dioxide, formaldehyde and aerosols from the Ozone Monitoring Instrument (OMI) and carbon
monoxide from the Troposheric Emission Spectrometer (TES) will be simultaneously measured with the spatial resolution and
coverage needed for improving our understanding of air quality. AURA data products useful for air quality monitoring will
be given.
Author
Air Quality; Earth Observing System (Eos); Remote Sensing; Atmospheric Composition
20040070830 NASA Goddard Space Flight Center, Greenbelt, MD, USA
An Expanded UV Irradiance Database from TOMS Including the Effects of Ozone, Clouds, and Aerosol Attenuation
Herman, J.; Krotkov, N.; [2003]; 1 pp.; In English; Fall AGU 2003 Meeting, 8-12 Dec. 2003, San Francisco, CA, USA; No
Copyright; Avail: Other Sources; Abstract Only
The TOMS UV irradiance database (1978 to 2003) has been expanded to include five new products (noon irradiance at
305,310,324, and 380 nm, and noon erythemal-weighted irradiance), in addition to the existing erythemal daily exposure, that
permit direct comparisons with ground-based measurements from spectrometers and broadband instruments. The new data are
available on http://toms.gsfc.nasa.gov/>http://toms.gsfc.nasa.gov. Comparisons of the TOMS estimated irradiances with
ground-based instruments are given along with a review of the sources of known errors, especially the recent improvements
in accounting for aerosol attenuation. Trend estimations from the new TOMS irradiances permit the clear separation of
changes caused by ozone and those caused by aerosols and clouds. Systematic differences in cloud cover are shown to be the
most important factor in determining regional differences in UV radiation reaching the ground for locations at the same
latitude (e.g., the summertime differences between Australia and the US southwest).
Author
Total Ozone Mapping Spectrometer; Irradiance; Ultraviolet Radiation; Data Bases
20040070838 Lockheed Martin Space Operations, Bay Saint Louis, MS, USA
Low Altitude AVIRIS Data for Mapping Land Cover in Yellowstone National Park: Use of Isodata Clustering
Techniques
Spruce, Joe; January 05, 2001; 1 pp.; In English; 2001 AVIRIS Earth Science and Applications Workshop, 27 Feb. - 2 Mar.
2001, Pasadena, CA, USA
Contract(s)/Grant(s): NAS13-650
Report No.(s): SE-2001-01-00004-SSC; No Copyright; Avail: Other Sources; Abstract Only
Yellowstone National Park (YNP) contains a diversity of land cover. YNP managers need site-specific land cover maps,
which may be produced more effectively using high-resolution hyperspectral imagery. ISODATA clustering techniques have
aided operational multispectral image classification and may benefit certain hyperspectral data applications if optimally
applied. In response, a study was performed for an area in northeast YNP using 11 select bands of low-altitude AVIRIS data
calibrated to ground reflectance. These data were subjected to ISODATA clustering and Maximum Likelihood Classification
techniques to produce a moderately detailed land cover map. The latter has good apparent overall agreement with field surveys
and aerial photo interpretation.
Author
Low Altitude; Yellowstone National Park (ID-MT-WY); Data Acquisition; Aerial Photography; Infrared Spectrometers;
Airborne Equipment; Land; Cluster Analysis
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