Computer Science – Sound
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990georl..17..437k&link_type=abstract
Geophysical Research Letters, Supplement (ISSN 0094-8276), vol. 17, March 1990, p. 437-440. Research supported by CNES, CNRS, MO
Computer Science
Sound
17
Aerosols, Arctic Regions, Atmospheric Chemistry, Balloon Sounding, Balloon-Borne Instruments, Stratosphere, Nitric Acid, Nitrogen, Reaction Kinetics, Vortices
Scientific paper
Total reactive nitrogen NO(y), between 15 and 29 km was measured for the first time on board a balloon within the Arctic cold vortex. Observations of HNO3, aerosol, and ozone were made by instruments on the same balloon gondola. The NO(y) mixing ratio was observed to increase very rapidly from 6 ppbv at 18 km altitude to a maximum of 21 ppbv at 21 km, forming a sharp layer with a thickness of about 2 km. A minimum in the NO(y) mixing ratio of 5 ppbv was found at 27 km. The measured HNO3 profile shows broad similarities to that of NO(y). This observation, together with the observed very low column amount of NO2, shows that NO(x) had been almost totally converted to HNO3, and that NO(y) was composed mainly of HNO3.
Aimedieu Patrick
Fahey David W.
Kondo Yoshihiko
Matthews Andrew W.
Murcray David G.
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