Multispectral imaging Fabry-Perot interferometer for tropospheric trace species detection

Allen M. Larar; William B. Cook; Jeffery J. Puschell; Wilbert R. Skinner

doi:10.1117/12.467731

16 June 2003 Multispectral imaging Fabry-Perot interferometer for tropospheric trace species detection

Allen M. Larar, William B. Cook, Jeffery J. Puschell, Wilbert R. Skinner

Proceedings Volume 4897, Multispectral and Hyperspectral Remote Sensing Instruments and Applications; (2003) https://doi.org/10.1117/12.467731
Event: Third International Asia-Pacific Environmental Remote Sensing Remote Sensing of the Atmosphere, Ocean, Environment, and Space, 2002, Hangzhou, China

Abstract

Monitoring tropospheric chemistry from space is the next frontier for advancing present-day remote sensing capabilities to meet future high-priority atmospheric science measurement needs. Paramount to these measurement requirements is that for tropospheric ozone, one of the most important gas-phase trace constituents in the lower atmosphere. Such space-based observations of tropospheric trace species are challenged by the need for sufficient horizontal resolution to identify constituent spatial distribution inhomogeneities (that result from non-uniform sources/sinks and atmospheric transport) and the need for adequate temporal resolution to resolve daytime and diurnal variations. Both of these requirements can be fulfilled from a geostationary Earth orbit (GEO) measurement system. The Tropospheric Trace Species Sensing Fabry-Perot Interferometer (TTSS-FPI) was recently selected for funding within NASA’s Instrument Incubator Program (IIP). Within this project we will develop and demonstrate a multispectral imaging airborne system to mitigate risk associated with an advanced atmospheric remote sensor intended for geostationary based measurement of tropospheric ozone and other trace species. The concept is centered about an imaging Fabry-Perot interferometer (FPI) observing a narrow spectral interval within the strong 9.6 micron ozone infrared band with a spectral resolution ~0.07 cm^-1. This concept is also applicable to and could simplify designs associated with atmospheric chemistry sensors targeting other trace species (which typically require spectral resolutions in the range of 0.01 - 0.1 cm^-1), since such an FPI approach could be implemented for those spectral bands requiring the highest spectral resolution and thus simplify overall design complexity. The measurement and instrument concepts, approach for development and demonstration within IIP, and a summary of progress-to-date will all be reported.

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Allen M. Larar, William B. Cook, Jeffery J. Puschell, and Wilbert R. Skinner "Multispectral imaging Fabry-Perot interferometer for tropospheric trace species detection", Proc. SPIE 4897, Multispectral and Hyperspectral Remote Sensing Instruments and Applications, (16 June 2003); https://doi.org/10.1117/12.467731

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KEYWORDS

Ozone

Fabry–Perot interferometers

Sensors

Spectral resolution

Calibration

Fabry–Perot interferometry

Staring arrays

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