A climate-scale satellite record for carbon monoxide: the MOPITT Version 7 product
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) repres...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2017-07-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://www.atmos-meas-tech.net/10/2533/2017/amt-10-2533-2017.pdf |
| Summary: | 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 N<sub>2</sub>O, (2) use of meteorological
fields from the MERRA-2 (Modern-Era Retrospective
Analysis for Research and Applications) reanalysis for the entire MOPITT mission
(instead of MERRA), (3) use of the MODIS (Moderate-Resolution Imaging Spectroradiometer) 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
near-infrared (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. |
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| ISSN: | 1867-1381 1867-8548 |