Multipurpose spectroradiometer for satellite instrument calibration and zenith sky remote sensing measurments

Donald F. Heath; Ziauddin Ahmad

doi:10.1117/12.416989

21 February 2001 Multipurpose spectroradiometer for satellite instrument calibration and zenith sky remote sensing measurments

Donald F. Heath, Ziauddin Ahmad

Author Affiliations +

Proceedings Volume 4150, Optical Remote Sensing of the Atmosphere and Clouds II; (2001) https://doi.org/10.1117/12.416989
Event: Second International Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space, 2000, Sendai, Japan

Abstract

In the early 1990s a series of surface-based direct sun and zenith sky measurements of total column ozone were made with SBUV/2 flight models and the SSBUV Space Shuttle instrument in Boulder, Colorado which were compared with NOAA Dobson Instrument direct sun observations and TOMS instrument overpass observations of column ozone. These early measurements led to the investigation of the accuracy of derived total column ozone amounts and aerosol optical depths from zenith sky observations. Following the development and availability of radiometrically stable IAD narrow band interference filter and nitrided silicon photodiodes a simple compact multifilter spectroradiometer was developed which can be used as a calibration transfer standard spectroradiometer (CTSS) or as a surface based instrument remote sensing instruments for measurements of total column ozone and aerosol optical depths. The total column ozone derived from zenith sky observations agrees with Dobson direct sun AD double wavelength pair measurements and with TOMS overpass ozone amounts within uncertainties of about 1%. When used as a calibration transfer standard spectroradiometer the multifilter spectroradiometer appears to be capable of establishing instrument radiometric calibration uncertainties of the order of 1% or less relative to national standards laboratory radiometric standards.

Citation Download Citation

Donald F. Heath and Ziauddin Ahmad "Multipurpose spectroradiometer for satellite instrument calibration and zenith sky remote sensing measurments", Proc. SPIE 4150, Optical Remote Sensing of the Atmosphere and Clouds II, (21 February 2001); https://doi.org/10.1117/12.416989

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