NO 2 /NO partitioning as a test of stratospheric ClO concentrations over Antarctica | Zendy

Webster Christopher R. | Zendy

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NO 2 /NO partitioning as a test of stratospheric ClO concentrations over Antarctica

Author(s) -

Webster Christopher R.

Publication year - 1987

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/gl014i007p00704

Subject(s) - stratosphere , chlorine , atmospheric sciences , environmental science , chemistry , environmental chemistry , mineralogy , geology , organic chemistry

Physical conditions in the 10–20 km region of the Antarctic stratosphere make the [NO 2 ]/[NO] ratio particularly sensitive to high chlorine levels in the form of ClO. According to simple known photochemical relationships between NO 2 , NO, ClO, and O 3 , high ClO levels of 1 ppbv over Antarctica must be accompanied by large values of the [NO 2 ]/[NO] ratio. At high ClO abundances, the [NO 2 ]/[NO] ratio is approximately proportional to the ClO concentration. It is proposed that in‐situ measurements of the [NO 2 ]/[NO] ratio could be used to test the high chlorine hypothesis.

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