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Stratospheric NO 2 and O 3 in Antarctica: Dynamic and chemically controlled variations
Author(s) -
Keys J. G.,
Johnston P. V.
Publication year - 1986
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/gl013i012p01260
Subject(s) - polar vortex , atmospheric sciences , ozone depletion , stratosphere , ozone , environmental science , ozone layer , latitude , polar , satellite , climatology , meteorology , geology , physics , geodesy , astronomy
Ground based measurements of stratospheric NO 2 made from Arrival Heights, Antarctica, are compared with TOMS satellite total ozone measurements and upper air meteorological data. The observations show the seasonal effects of partitioning on NO 2 , and the influence of wave driven transport on both the NO 2 and O 3 column in spring. We conclude that stratospheric air appearing over our site in spring during low pressure conditions is representative of the cold core of the polar vortex, which has effectively been isolated from lower latitude air. Within this core, photochemical processes influencing the ozone column amount and NO 2 levels can proceed without marked influence from transport effects.