25 October 1999 Airborne tunable diode laser measurements of formaldehyde during the 1997 North Atlantic Regional Experiment
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Abstract
Accurate measurements of formaldehyde (CH2O), a trace gas found throughout the atmosphere, are important for furthering our understanding of hydrocarbon oxidation processes in the atmosphere. During the 1997 North Atlantic Regional Experiment numerous trace gases, including CH2O, were measured onboard a WP3 aircraft operated by the National Oceanic and Atmospheric Administration to study continental transport and photochemistry over remote regions of the North Atlantic Ocean. A highly sensitive tunable diode laser absorption spectrometer was employed in acquiring ambient CH2O measurements on 10 different flights during this campaign. A second instrument, based on chemical derivatization of ambient CH2O with DNPH, was also operated on the WP3 aircraft. This paper will briefly summarize the aircraft TDLAS system employed and discuss the level of agreement obtained between both instruments. This will be followed by a brief discussion of the results, and concludes with a preliminary comparison of the measurements with a 0-dimensional box model constrained by the measurements of other species during the campaign.
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Alan Fried, Bryan P. Wert, Bruce E. Henry, James R. Drummond, Gregory J. Frost, Yin-Nan Lee, "Airborne tunable diode laser measurements of formaldehyde during the 1997 North Atlantic Regional Experiment", Proc. SPIE 3758, Application of Tunable Diode and Other Infrared Sources for Atmospheric Studies and Industrial Processing Monitoring II, (25 October 1999); doi: 10.1117/12.366440; https://doi.org/10.1117/12.366440
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