© Author(s) 2006. This work is licensed under a Creative Commons License. Atmospheric Chemistry and Physics Partitioning between the inorganic chlorine reservoirs HCl and

• Main Authors: G. Dufour, J. J. Jin, J. C. Mcconnell, G. L. Manney
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2006
• Subjects: Arctic
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.662.9929; http://www.ace.uwaterloo.ca/publications/2006/DufourClArctic2006reprint.pdf

Abstract. From January to March 2005, the Atmospheric Chemistry Experiment high resolution Fourier transform spectrometer (ACE-FTS) on SCISAT-1 measured many of the changes occurring in the Arctic (50–80 ◦ N) lower strato-sphere under very cold winter conditions. Here we focus on the partitioning between the inorganic chlorine reservoirs HCl and ClONO2 and their activation into ClO. The simul-taneous measurement of these species by the ACE-FTS pro-vides the data needed to follow chlorine activation during the Arctic winter and the recovery of the Cl-reservoir species ClONO2 and HCl. The time evolution of HCl, ClONO2 and ClO as well as the partitioning between the two reser-voir molecules agrees well with previous observations and with our current understanding of chlorine activation during Arctic winter. The results of a chemical box model are also compared with the ACE-FTS measurements and are gener-ally consistent with the measurements. 1