Dual-aureole and sun spectrometer system for airborne measurements of aerosol optical properties
Applied Optics, Vol. 46, Issue 35, pp. 8542-8552 (2007)
http://dx.doi.org/10.1364/AO.46.008542
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Abstract
We have designed an airborne spectrometer system for the simultaneous measurement of the direct sun irradiance and the aureole radiance in two different solid angles. The high-resolution spectral radiation measurements are used to derive vertical profiles of aerosol optical properties. Combined measurements in two solid angles provide better information about the aerosol type without additional and elaborate measuring geometries. It is even possible to discriminate between absorbing and nonabsorbing aerosol types. Furthermore, they allow to apply additional calibration methods and simplify the detection of contaminated data (e.g., by thin cirrus clouds). For the characterization of the detected aerosol type a new index is introduced that is the slope of the aerosol phase function in the forward scattering region. The instrumentation is a flexible modular setup, which has already been successfully applied in airborne and ground-based field campaigns. We describe the setup as well as the calibration of the instrument. In addition, example vertical profiles of aerosol optical properties—including the aureole measurements—are shown and discussed.
© 2007 Optical Society of America
OCIS Codes
(010.1110) Atmospheric and oceanic optics : Aerosols
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(280.1100) Remote sensing and sensors : Aerosol detection
(280.1310) Remote sensing and sensors : Atmospheric scattering
ToC Category:
Remote Sensing and Sensors
History
Original Manuscript: September 19, 2007
Revised Manuscript: October 25, 2007
Manuscript Accepted: October 25, 2007
Published: December 7, 2007
Citation
Paul Zieger, Thomas Ruhtz, Rene Preusker, and Jürgen Fischer, "Dual-aureole and sun spectrometer system for airborne measurements of aerosol optical properties," Appl. Opt. 46, 8542-8552 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-35-8542
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