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Chemical change in the Arctic Vortex during AASE II
Author(s) -
Traub Wesley A.,
Jucks Kenneth W.,
Johnson David G.,
Chance Kelly V.
Publication year - 1994
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/94gl01324
Subject(s) - ozone , vortex , atmospheric sciences , column (typography) , water column , arctic , atmospheric chemistry , ozone depletion , the arctic , subsidence , environmental science , stratosphere , tracer , ozone layer , oceanography , geology , meteorology , physics , geomorphology , structural engineering , connection (principal bundle) , structural basin , nuclear physics , engineering
We measured column abundances of HF, HCl, O 3 , HNO 3 , and H 2 O on the NASA DC‐8 during the AASE II campaign, using thermal emission spectroscopy. We made multiple traversals of the Arctic vortex and surroundings. Using HF as a tracer, we remove the effects of subsidence from the measured column abundances; perturbations in the resulting column abundances are attributed to chemical processing. We 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 3 , and enhanced by about (15±10)% in HNO 3 and (0±10)% in H 2 O.