Internal consistency of the IAGOS ozone and carbon monoxide measurements for the last 25 years
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hdl:2117/346634
Tipus de documentArticle
Data publicació2021
EditorCopernicus Publications
Condicions d'accésAccés obert
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Reconeixement 3.0 Espanya
Abstract
The In-service Aircraft for a Global Observing System (IAGOS) is a European research infrastructure that equips the Airbus A340/330 with a system for monitoring atmospheric composition. The IAGOS instruments have three different configurations: IAGOS-Core, IAGOS – Measurement of Ozone and Water Vapor by Airbus In Service Aircraft (IAGOS-MOZAIC) and IAGOS – Civil Aircraft for the Regular Investigation of the atmosphere Based on an Instrument Container (IAGOS-CARIBIC). Since 1994, there have been a total of 17 aircraft equipped. In this study, we perform an intercomparison of about 8000 landing and takeoff profiles to compare the O3 and CO measurements performed from these different configurations. The collocated profiles used in the study met various selection criteria. The first was a maximal 1 h time difference between an ascent or descent by two different aircraft at the same airport and the second was a selection based on the similarity of air masses based on the meteorological data acquired by the aircraft. We provide here an evaluation of the internal consistency of the O3 and CO measurements since 1994. For both O3 and CO, we find no drift in the bias amongst the different instrument units (six O3 and six CO IAGOS-MOZAIC instruments, nine IAGOS-Core Package1 and the two instruments used in the IAGOS-CARIBIC aircraft). This result gives us confidence that the entire IAGOS database can be treated as one continuous program and is therefore appropriate for studies of long-term trends.
CitacióBlot, R. [et al.]. Internal consistency of the IAGOS ozone and carbon monoxide measurements for the last 25 years. "Atmospheric Measurement Techniques", 2021, vol. 14, núm. 5, p. 3935-3951.
ISSN1867-1381
1867-8548
1867-8548
Versió de l'editorhttps://amt.copernicus.org/articles/14/3935/2021/
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