Strawman design for a gas-filter correlation radiometer satellite instrument to measure the atmospheric CO<sub>2</sub> column

Boyd T. Tolton; John Hackett; Dwight Caldwell; Doug Miller

doi:10.1117/12.560104

4 November 2004 Strawman design for a gas-filter correlation radiometer satellite instrument to measure the atmospheric CO₂ column

Boyd T. Tolton, John Hackett, Dwight Caldwell, Doug Miller

Author Affiliations +

Proceedings Volume 5543, Infrared Spaceborne Remote Sensing XII; (2004) https://doi.org/10.1117/12.560104
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

Satellite-based remote sensing of atmospheric CO₂ holds the promise to greatly improve our understanding of the processes which regulate atmospheric CO₂ and the global carbon cycle. However, the required precision and resolution of such measurements needed to characterise sources and sinks of CO₂ on regional scales presents strong instrument design challenges. One type of remote sensing instrument which has been proposed to measure the integrated-column concentration of CO₂ is a Gas-Filter Correlation Radiometer (GFCR). As a technique, a GFCR is a radiometer which uses a sample of the gas of interest as a spectral filter for that gas in the atmosphere. In this paper we present a "strawman" design for a GFCR satellite instrument to remotely sense atmospheric CO₂. This design, which includes multi-pass CO₂ and O₂ gas cells with path lengths of up to 10 metres, demonstrates that such an instrument can be built within the constraints of a satellite environment.

Citation Download Citation

Boyd T. Tolton, John Hackett, Dwight Caldwell, and Doug Miller "Strawman design for a gas-filter correlation radiometer satellite instrument to measure the atmospheric CO₂ column", Proc. SPIE 5543, Infrared Spaceborne Remote Sensing XII, (4 November 2004); https://doi.org/10.1117/12.560104

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