DOI: 10.1126/science.261.5125.1130. Chlorine Chemistry on Polar Stratospheric Cloud Particles in the Arctic Winter

Chlorine Chemistry on Polar Stratospheric Cloud Particles in the Arctic Winter

10.1126/science.261.5125.1130

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Simultaneous in situ measurements of hydrochloric acid (HCl) and chlorine monoxide (ClO) in the Arctic winter vortex showed large HCl losses, of up to 1 part per billion by volume (ppbv), which were correlated with high ClO levels of up to 1.4 ppbv. Air parcel trajectory analysis identified that this conversion of inorganic chlorine occurred at air temperatures of less than 196 ± 4 kelvin. High ClO was always accompanied by loss of HCl mixing ratios equal to 1/2(ClO + 2Cl 2 O 2 ). These data indicate that the heterogeneous reaction HCl + ClONO 2 → Cl 2 + HNO 3 on particles of polar stratospheric clouds establishes the chlorine partitioning, which, contrary to earlier notions, begins with an excess of ClONO 2 , not HCl.

Bibliography

Webster, C. R., May, R. D., Toohey, D. W., Avallone, L. M., Anderson, J. G., Newman, P., Lait, L., Schoeberl, M. R., Elkins, J. W., & Chan, K. R. (1993). Chlorine Chemistry on Polar Stratospheric Cloud Particles in the Arctic Winter. Science, 261(5125), 1130â1134.

Authors 10

C. R. Webster (first)
R. D. May (additional)
D. W. Toohey (additional)
L. M. Avallone (additional)
J. G. Anderson (additional)
P. Newman (additional)
L. Lait (additional)
M. R. Schoeberl (additional)
J. W. Elkins (additional)
K. R. Chan (additional)

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Dates

Type	When
Created	18 years, 10 months ago (Oct. 5, 2006, 7:05 p.m.)
Deposited	1 year, 7 months ago (Jan. 12, 2024, 5:21 p.m.)
Indexed	1 month, 4 weeks ago (June 27, 2025, 10:03 a.m.)
Issued	31 years, 11 months ago (Aug. 27, 1993)
Published	31 years, 11 months ago (Aug. 27, 1993)
Published Print	31 years, 11 months ago (Aug. 27, 1993)

Funders 0

None

BibTeX

@article{Webster_1993, title={Chlorine Chemistry on Polar Stratospheric Cloud Particles in the Arctic Winter}, volume={261}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.261.5125.1130}, DOI={10.1126/science.261.5125.1130}, number={5125}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Webster, C. R. and May, R. D. and Toohey, D. W. and Avallone, L. M. and Anderson, J. G. and Newman, P. and Lait, L. and Schoeberl, M. R. and Elkins, J. W. and Chan, K. R.}, year={1993}, month=aug, pages={1130–1134} }

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