We report on progress of our CO2 laser sounder laboratory breadboard system the goal of which is to measure the integrated column abundance of CO2 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 CO2 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 ± 0.05% for over 10 hours before re-calibration (equivalent to a 1ppm precision from orbit). Data from an eight day, 0.8 Km open path comparison test with a LICOR shows excellent agreement.


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    Title :

    Laser Sounder for Active Remote Sensing Measurements of CO2 Concentrations


    Contributors:


    Publication date :

    2008-03-01


    Size :

    3745020 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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