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Validation of MOPITT carbon monoxide using ground-based Fourier transform infrared spectrometer data from NDACC

Buchholz, R. R.; Deeter, M. N.; Worden, H. M.; Gille, J.; Edwards, D. P.; Hannigan, J. W.; Jones, N. B.; Paton-Walsh, C.; Griffith, D. W. T.; Smale, D.; Robinson, J.; Strong, K.; Conway, S.; Sussmann, R.; Hase, F.; Blumenstock, T.; Mahieu, E.; Langerock, B.

Abstract:
The Measurements of Pollution in the Troposphere (MOPITT) satellite instrument provides the longest continuous dataset of carbon monoxide (CO) from space. We perform the first validation of MOPITT version 6 retrievals using total column CO measurements from ground-based remote-sensing Fourier transform infrared spectrometers (FTSs). Validation uses data recorded at 14 stations, that span a wide range of latitudes (80° N to 78° S), in the Network for the Detection of Atmospheric Composition Change (NDACC). MOPITT measurements are spatially co-located with each station, and different vertical sensitivities between instruments are accounted for by using MOPITT averaging kernels (AKs). All three MOPITT retrieval types are analyzed: thermal infrared (TIR-only), joint thermal and near infrared (TIR–NIR), and near infrared (NIR-only). Generally, MOPITT measurements overestimate CO relative to FTS measurements, but the bias is typically less than 10 %. Mean bias is 2.4 % for TIR-only, 5.1 % for TIR–NIR, and 6.5 % for NIR-only. The TIR–NIR and NIR-only products consistently produce a larger bias and lower correlation than the TIR-only. Valid ... mehr


Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator DOI: 10.5194/amt-10-1927-2017
ISSN: 1867-1381, 1867-8548
URN: urn:nbn:de:swb:90-711699
KITopen ID: 1000071169
HGF-Programm 12.03.01; LK 01
Erschienen in Atmospheric measurement techniques
Band 10
Heft 5
Seiten 1927-1956
Lizenz CC BY 3.0 DE: Creative Commons Namensnennung 3.0 Deutschland
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