Information content of measurements in the O2A- and O2B-bands for monitoring of aerosols from space

Bringfried M. Pflug; T. Ruppert

doi:10.1117/12.154856

15 September 1993 Information content of measurements in the O2A- and O2B-bands for monitoring of aerosols from space

Bringfried M. Pflug, T. Ruppert

Proceedings Volume 1968, Atmospheric Propagation and Remote Sensing II; (1993) https://doi.org/10.1117/12.154856
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

The information content of radiance measurements in the O₂A- and O₂B-bands over the oceans for aerosol monitoring from space is discussed. A simple model of radiation transfer in the system atmosphere/ocean shall be used for estimation of optical thicknesses of different aerosol layers and ocean reflection. There are 3 nonredundant spectrometer channels in the O₂A-band around 762 nm and 2 nonredundant channels in the O₂B-band around 687 nm. High measurement accuracy of about 1% is more important for the measurements than a halfwidth (Delta) (lambda) _FWHM of spectrometer channels smaller than 1 nm. A sensitivity analysis shows that the optical thickness of stratospheric aerosols can be estimated from measurements in the O₂A- and O₂B-bands. From these results the chance to use combined measurements in both bands for distinction between volcanic and background- stratospheric aerosols exists. There also is a chance to use measurements in the O₂A-band for estimation of the optical thickness of aerosols in the free troposphere. The estimation of the optical thickness of aerosols within the maritime boundary layer can be expected from measurements in the O₂A-band, if ocean reflection is known. To estimate optical thicknesses of different aerosol layers is not only useful for aerosol studies, but also for better atmospheric correction of satellite images of the ocean surface.

Citation Download Citation

Bringfried M. Pflug and T. Ruppert "Information content of measurements in the O2A- and O2B-bands for monitoring of aerosols from space", Proc. SPIE 1968, Atmospheric Propagation and Remote Sensing II, (15 September 1993); https://doi.org/10.1117/12.154856

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