@inproceedings{822611b0f7b3483d9cddfbdb9a1cad73,
title = "WindCam and MSPI: Two cloud and aerosol instrument concepts derived from Terra/MISR heritage",
abstract = "The Multi-angle Imaging SpectroRadiometer (MISR) has been acquiring global cloud and aerosol data from polar orbit since February 2000. MISR acquires moderately high-resolution imagery at nine view angles from nadir to 70.5°, in four visible/near-infrared spectral bands. Stereoscopic parallax, time lapse among the nine views, and the variation of radiance with angle and wavelength enable retrieval of geometric cloud and aerosol plume heights, height-resolved cloud-tracked winds, and aerosol optical depth and particle property information. Two instrument concepts based upon MISR heritage are in development. The Cloud Motion Vector Camera, or WindCam, is a simplified version comprised of a lightweight, compact, wide-angle camera to acquire multiangle stereo imagery at a single visible wavelength. A constellation of three WindCam instruments in polar Earth orbit would obtain height-resolved cloud-motion winds with daily global coverage, making it a low-cost complement to a spaceborne lidar wind measurement system. The Multiangle SpectroPolarimetric Imager (MSPI) is aimed at aerosol and cloud microphysical properties, and is a candidate for the National Research Council Decadal Survey's Aerosol-Cloud-Ecosystem (ACE) mission. MSPI combines the capabilities of MISR with those of other aerosol sensors, extending the spectral coverage to the ultraviolet and shortwave infrared and incorporating high-accuracy Polarimetrie imaging. Based on requirements for the non-imaging Aerosol Polarimeter Sensor on NASA's Glory mission, a degree of linear polarization uncertainty of 0.5% is specified within a subset of the MSPI bands. We are developing a polarization imaging approach using photoelastic modulators (PEMs) to accomplish this objective.",
keywords = "Aerosols, Cloud motion winds, Clouds, Photoelastic modulators, Plumes, Polarimetry, Stereo imaging",
author = "Diner, {David J.} and Michael Michael and Chipman, {Russell A.} and Ab Davis and Brian Cairns and Roger Davies and Kahn, {Ralph A.} and Muller, {Jan Peter} and Omar Torres",
year = "2008",
doi = "10.1117/12.795146",
language = "English (US)",
isbn = "9780819473011",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Earth Observing Systems XIII",
note = "Earth Observing Systems XIII ; Conference date: 11-08-2008 Through 13-08-2008",
}