Laser Sounder for Active Remote Sensing Measurements of CO2 Concentrations

We report on progress of our CO 2 laser sounder laboratory breadboard system the goal of which is to measure the integrated column abundance of CO 2 to better than 1 ppm from low Earth orbit globally, measuring at all latitudes and seasons through day and night. The challenge for an orbiting CO 2 in...

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Bibliographic Details
Published in2008 IEEE Aerospace Conference pp. 1 - 7
Main Authors Allan, G.R., Riris, H., Abshire, J.B., Xiaoli Sun, Wilson, E., Burris, J.F., Krainak, M.A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.03.2008
Subjects
Absorption
Atmospheric measurements
Extraterrestrial measurements
Instruments
Interference
Optical scattering
Optical sensors
Optical transmitters
Remote sensing
Sea measurements
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Summary:We report on progress of our CO 2 laser sounder laboratory breadboard system the goal of which is to measure the integrated column abundance of CO 2 to better than 1 ppm from low Earth orbit globally, measuring at all latitudes and seasons through day and night. The challenge for an orbiting CO 2 instrument is to achieve high precision not high sensitivity. We have made simple yet significant improvements to our active, optical-sensing laser-sounder instrument and real-time data processing that now enables absolute absorption measurements to better than plusmn 0.05% for over 10 hours before re-calibration (equivalent to a 1 ppm precision from orbit). Data from an eight day, 0.8 Km open path comparison test with a LICOR shows excellent agreement.
ISBN:1424414873
9781424414871
ISSN:1095-323X
2996-2358
DOI:10.1109/AERO.2008.4526387