Atmospheric Chemistry and Physics

• Main Author: Atmos Chem Phys
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2005
• Subjects: Arctic; Descartes; Kiruna
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.592.4759; http://hal.archives-ouvertes.fr/docs/00/32/83/89/PDF/acp-5-1423-2005.pdf

Abstract. Balloon-borne measurements of CFC11 (from the DIRAC in situ gas chromatograph and the DESCARTES grab sampler), ClO and O3 were made during the 1999/2000 Arctic winter as part of the SOLVE-THESEO 2000 cam-paign, based in Kiruna (Sweden). Here we present the CFC-11 data from nine flights and compare them first with data from other instruments which flew during the campaign and then with the vertical distributions calculated by the SLIM-CAT 3D CTM. We calculate ozone loss inside the Arctic vor-tex between late January and early March using the relation between CFC11 and O3 measured on the flights. The peak ozone loss (∼1200 ppbv) occurs in the 440–470 K region in early March in reasonable agreement with other published empirical estimates. There is also a good agreement between ozone losses derived from three balloon tracer data sets used