Chemical change in the arctic vortex during AASE II

Journal Article · Mon Nov 14 23:00:00 EST 1994 · Geophysical Research Letters

DOI:https://doi.org/10.1029/94GL01324· OSTI ID:57043

Traub, W A; Jucks, K W; Johnson, D G; Chance, K V ^[1]

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1. Smithsonian Astrophysical Observatory, Cambridge, MA (United States)

The authors measured column abundances of HF, HCl, O{sub 3}, HNO{sub 3}, and H{sub 2}O on the NASA DC-8 during the AASE II campaign, using thermal emission spectroscopy. The authors made multiple traversals of the Arctic vortex and surroundings. Using HF as a tracer, the remove the effects of subsidence from the measured column abundances; perturbations in the resulting column abundances are attributed to chemical processing. The authors find that by January 1992 the stratospheric column in the vortex had been chemically depleted by about (55 {+-} 10)% in HCl and (35 {+-} 10)% in O{sub 3}, and enhanced by about (15 {+-} 10)% in HNO{sub 3} and (0 {+-} 10)% in H{sub 2}O. 14 refs., 2 figs.

• OSTI ID: 57043
• Journal Information: Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 23 Vol. 21; ISSN GPRLAJ; ISSN 0094-8276
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ARCTIC REGIONS
ECOLOGICAL CONCENTRATION
HYDROCHLORIC ACID
HYDROFLUORIC ACID
NITRIC ACID
OZONE
SEASONAL VARIATIONS
STRATOSPHERE
WATER VAPOR