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| Titel |
The Airborne Multiangle SpectroPolarimetric Imager (AirMSPI): a new tool for aerosol and cloud remote sensing |
| VerfasserIn |
D. J. Diner, F. Xu, M. J. Garay, J. V. Martonchik, B. E. Rheingans, S. Geier, A. Davis, B. R. Hancock, V. M. Jovanovic, M. A. Bull, K. Capraro, R. A. Chipman, S. C. McClain |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 6, no. 8 ; Nr. 6, no. 8 (2013-08-13), S.2007-2025 |
| Datensatznummer |
250085035
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| Publikation (Nr.) |
 copernicus.org/amt-6-2007-2013.pdf |
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| Zusammenfassung |
| The Airborne Multiangle SpectroPolarimetric Imager (AirMSPI) is an
eight-band (355, 380, 445, 470, 555, 660, 865, 935 nm) pushbroom camera,
measuring polarization in the 470, 660, and 865 nm bands, mounted on a
gimbal to acquire multiangular observations over a ±67°
along-track range. The instrument has been flying aboard the NASA ER-2 high
altitude aircraft since October 2010. AirMSPI employs a photoelastic
modulator-based polarimetric imaging technique to enable accurate
measurements of the degree and angle of linear polarization in addition to
spectral intensity. A description of the AirMSPI instrument and ground data
processing approach is presented. Example images of clear, hazy, and cloudy
scenes over the Pacific Ocean and California land targets obtained during
flights between 2010 and 2012 are shown, and quantitative interpretations of
the data using vector radiative transfer theory and scene models are
provided to highlight the instrument's capabilities for determining aerosol
and cloud microphysical properties and cloud 3-D spatial distributions.
Sensitivity to parameters such as aerosol particle size distribution, ocean
surface wind speed and direction, cloud-top and cloud-base height, and cloud
droplet size is discussed. AirMSPI represents a major step toward
realization of the type of imaging polarimeter envisioned to fly on NASA's
Aerosol-Cloud-Ecosystem (ACE) mission in the next decade. |
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