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Groundbased measurements of stratospheric OClO, NO 2 , and O 3 at Søndre Strømfjord in winter 1991/92
Author(s) -
Perner D.,
Roth A.,
Klüpfel T.
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 - 10.1029/93gl01871
Subject(s) - stratosphere , polar vortex , atmospheric sciences , environmental science , ozone , ozone layer , polar , arctic , ozone depletion , nitrogen dioxide , climatology , meteorology , physics , geology , oceanography , astronomy
Experiment (EASOE) campaign Within the scope of the 1991/92 European Arctic Stratospheric Ozone stratospheric chlorine dioxide, OClO, nitrogen dioxide, NO 2 , bromine monoxide, BrO, and ozone, O 3 , were measured by groundbased UV‐VIS remote sensing in Søndre Strømfjord, Greenland (50.4°W, 67.0°N). The measurement period was from the middle of November 1991 until the end of January 1992. The anticipated correlation between potential vorticity and OClO appeared less pronounced in the beginning and its abundance was similar inside and outside of the polar vortex. During November 1991 stratospheric temperatures throughout the polar region were still above threshold for polar stratospheric cloud (PSC) formation. During January when NO 2 column densities were at their lowest, OClO inside of the vortex appeared to be highly variable. Average vertical column densities reached about 10 13 molec cm −2 , less than found in previous years. The chemistry as well as the observations may have been disturbed by the aerosol cloud from Mt. Pinatubo eruption.