In situ measurements of NO sub x in the Airborne Arctic Stratospheric Expedition

Journal Article · Wed Feb 28 23:00:00 EST 1990 · Geophysical Research Letters (American Geophysical Union); (United States)

DOI:https://doi.org/10.1029/GL017i004p00493· OSTI ID:5397241

Carroll, M A; Kelly, K K ^[1]; Montzka, D D; Huebler, G ^[2]; Gregory, G L ^[3]

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1. National Oceanic and Atmospheric Administration, Boulder, CO (USA)
2. National Oceanic and Atmospheric Administration, Boulder, CO (USA) Univ. of Colorado, Boulder (USA)
3. NASA Langley Research Center, Hampton, VA (USA)

In situ measurements of nitric oxide (NO) and nitrogen dioxide (NO{sub 2}) were made simultaneously from the NASA DC-8 aircraft as part of the Airborne Arctic Stratospheric Expedition. Mixing ratios of NO{sub x} (NO + NO{sub 2}) were typically higher in the Arctic troposphere than in the stratosphere, with median values of 59 and 40 pptv, respectively. In the stratosphere, there tended to be a positive correlation between NO{sub x} and water vapor (H{sub 2}O) and negative correlations between NO{sub x} and ozone (O{sub 3}) and between NO{sub x} and total reactive odd-nitrogen (NO{sub y}). The ratio of NO{sub x} to NO{sub y}, in conjunction with NO{sub y}, appears to be an excellent tracer of tropospheric or stratospheric air at northern latitudes during winter. Tropospheric NO{sub x} was typically 10 to 50% of gas-phase NO{sub y}, while in the stratosphere, NO{sub x} was typically < 10%, and frequently <5% of gas-phase NO{sub y}.

• OSTI ID: 5397241
• Journal Information: Geophysical Research Letters (American Geophysical Union); (United States), Journal Name: Geophysical Research Letters (American Geophysical Union); (United States) Vol. 17:4; ISSN 0094-8276; ISSN GPRLA
• Country of Publication: United States
• Language: English

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