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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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https://doi.org/10.5194/amt-2017-71
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
24 Mar 2017
Review status
A revision of this discussion paper was accepted for the journal Atmospheric Measurement Techniques (AMT) and is expected to appear here in due course.
A Climate-scale Satellite Record for Carbon Monoxide: The MOPITT Version 7 Product
Merritt N. Deeter1, David P. Edwards1, Gene L. Francis1, John C. Gille1, Sara Martinez-Alonso1, Helen M. Worden1, and Colm Sweeney2 1Atmospheric Chemistry Observations and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, USA
2Global Monitoring Division, NOAA/ESRL, Boulder, CO, USA
Abstract. The MOPITT (“Measurements of Pollution in the Troposphere”) satellite instrument has been making observations of atmospheric carbon monoxide since 2000. Recent enhancements to the MOPITT retrieval algorithm have resulted in the release of the Version 7 (V7) product. Improvements include (1) representation of growing atmospheric concentrations of N2O, (2) use of meteorological fields from the MERRA-2 reanalysis for the entire MOPITT mission (instead of MERRA), (3) use of the MODIS Collection 6 cloud mask product (instead of Collection 5), (4) a new strategy for radiance bias correction, and (5) an improved method for calibrating MOPITT’s NIR radiances. Statistical comparisons of V7 validation results with corresponding V6 results are presented, using aircraft in-situ measurements as the reference. Clear improvements are demonstrated for V7 products with respect to overall retrieval biases, bias variability, and bias drift uncertainty.

Citation: Deeter, M. N., Edwards, D. P., Francis, G. L., Gille, J. C., Martinez-Alonso, S., Worden, H. M., and Sweeney, C.: A Climate-scale Satellite Record for Carbon Monoxide: The MOPITT Version 7 Product, Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2017-71, in review, 2017.
Merritt N. Deeter et al.
Merritt N. Deeter et al.

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Short summary
This manuscript describes the methods used for deriving the latest Version 7 product for atmospheric carbon monoxide (CO) from measurements made by the MOPITT (Measurements of Pollution in the Troposphere) satellite instrument. Comparisons of MOPITT CO retrieved vertical profiles with in-situ data measured from aircraft are also presented, and demonstrate clear improvements relative to earlier MOPITT products. The new CO product is appropriate for a wide variety of applications.
This manuscript describes the methods used for deriving the latest Version 7 product for...
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