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Proceedings Paper • Open Access

Spectropolarimetry for earth observations: a novel method for characterization of aerosols and clouds
Author(s): Oana Van der Togt; Ad Verlaan; Kees Moddemeijer; Martijn Smit; Jeroen Rietjens; Otto P. Hasekamp; Daphne Stam; Frans Snik; Gerard van Harten

Paper Abstract

Aerosols affect Earth’s energy level by scattering and absorbing radiation and by changing the properties of clouds. Such effects influence the precipitation patterns and lead to modifications of the global circulation systems that constitute Earth’s climate. The aerosol effects on our climate cannot be at full scale estimated due to the insufficient knowledge of their properties at a global scale. Achieving global measurement coverage requires an instrument with a large instantaneous field of view that can perform polarization measurements with high accuracy, typically better than 0.1%. Developing such an instrument can be considered as the most important challenge in polarimetric aerosol remote sensing.

Using a novel technique to measure polarization, we have designed an instrument for a low-Earth orbit, e.g. International Space Station, that can simultaneously characterize the intensity and state of linear polarization of scattered sunlight, from 400 to 800 nm and 1200 to 1600 nm, for 30 viewing directions, each with a 30° viewing angle. In this article we present the instrument’s optical design concept.

Paper Details

Date Published: 20 November 2017
PDF: 6 pages
Proc. SPIE 10564, International Conference on Space Optics — ICSO 2012, 105641S (20 November 2017); doi: 10.1117/12.2309041
Show Author Affiliations
Oana Van der Togt, TNO (Netherlands)
Ad Verlaan, TNO (Netherlands)
Kees Moddemeijer, TNO (Netherlands)
Martijn Smit, SRON Netherlands Institute for Space Research (Netherlands)
Jeroen Rietjens, SRON Netherlands Institute for Space Research (Netherlands)
Otto P. Hasekamp, SRON Netherlands Institute for Space Research (Netherlands)
Daphne Stam, SRON Netherlands Institute for Space Research (Netherlands)
Frans Snik, Leiden Univ. (Netherlands)
Gerard van Harten, Leiden Univ. (Netherlands)

Published in SPIE Proceedings Vol. 10564:
International Conference on Space Optics — ICSO 2012
Bruno Cugny; Errico Armandillo; Nikos Karafolas, Editor(s)

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