The response of ClO radical concentrations to variations in NO{sub 2} radical concentrations in the lower stratosphere

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

DOI:https://doi.org/10.1029/94GL02373· OSTI ID:57031

Stimpfle, R M; Koplow, J P; Cohen, R C; Kohn, D W; Wennberg, P O; Judah, D M; Anderson, J G; Salawitch, R J ^[1]; Toohey, D W; Avallone, L M ^[2]

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1. Harvard Univ., Cambridge, MA (United States)
2. Univ. of California, Irvine, CA (United States); and others

The response of ClO concentrations to changes in NO{sub 2} concentrations has been inferred from simultaneous observations of [ClO], [NO], [NO{sub 2}] and [O{sub 3}] in the mid-latitude lower stratosphere. This analysis demonstrates that [ClO] is inversely correlated with [NO{sub 2}], consistent with formation and photolysis of [ClONO{sub 2}]. A factor of ten range in the concentration of NO{sub 2} was sampled (0.1 to 1 x 10{sup 9} mol/cm{sup 3}), with a comparable range in the ratio of [ClO] to total available inorganic chlorine (1% {le} [ClO]/[Cl{sub y}] {le} 5%). This analysis leads to an estimate of [ClONO{sub 2}]/[Cl{sub y}] = 0.12 ({times}/{divided_by}2), in the mid-latitude, lower-stratospheric air masses sampled. 22 refs., 2 figs.

• OSTI ID: 57031
• 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
ATMOSPHERIC CHEMISTRY
CHLORINE OXIDES
CORRELATIONS
NITROGEN DIOXIDE
STRATOSPHERE