Modeling of polarized light scattering in cirrus clouds: validation with in-situ measurements and ADEOS-POLDER reflectance observations

Laurent C. Labonnote; Gerard Brogniez; Jean-Francois Gayet; Jean-Claude Buriez; Marie Doutriaux-Boucher

doi:10.1117/12.366341

25 October 1999 Modeling of polarized light scattering in cirrus clouds: validation with in-situ measurements and ADEOS-POLDER reflectance observations

Laurent C. Labonnote, Gerard Brogniez, Jean-Francois Gayet, Jean-Claude Buriez, Marie Doutriaux-Boucher

Author Affiliations +

Proceedings Volume 3754, Polarization: Measurement, Analysis, and Remote Sensing II; (1999) https://doi.org/10.1117/12.366341
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Various in situ measurements of the light scattering diagram in cirrus clouds with a new airborne nephelometer, have been performed using several airborne campaigns. These measurements have been favorably compared with a theoretical scattering model. This model consists in computing the scattering of light by an ensemble of randomly oriented hexagonal ice crystals containing spherical impurities of soot and air bubbles. It is achieved by using a combination of ray-tracing, Mie theory,k and Monte-Carlo techniques. It allows to retrieve the six independent elements of these scattering matrix, and results are favorably compared with in situ nephelometer measurements. This good agreement provide an opportunity to use this model in order to analyze ADEOS-POLDER reflectance measurements over cirrus clouds. POLDER uses an original concept to observe cirrus clouds properties, especially because reflectances and polarized reflectances are measured, for a given scene, under several viewing directions. A first analysis of cirrus cloud spherical albedos over the terrestrial globe for November 10, 1996, shows a rather good agreement between measurement and modeling. Moreover, polarized reflectances are also calculated and show a satisfactory with measurements.

Citation Download Citation

Laurent C. Labonnote, Gerard Brogniez, Jean-Francois Gayet, Jean-Claude Buriez, and Marie Doutriaux-Boucher "Modeling of polarized light scattering in cirrus clouds: validation with in-situ measurements and ADEOS-POLDER reflectance observations", Proc. SPIE 3754, Polarization: Measurement, Analysis, and Remote Sensing II, (25 October 1999); https://doi.org/10.1117/12.366341

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available