1. Studies of OH and HO2 in the Region of the Arctic Winter Tropopause Open Access Author: Simpas, James Title: Studies of OH and HO2 in the Region of the Arctic Winter Tropopause Graduate Program: Meteorology Keywords: HOxupper tropospherelower stratospherehalogensarctic ozonecirrustropopauseatmospheric chemistrymeteorology File: Download Simpas_Dissertation_Aug2012.pdf Committee Members: William Henry Brune, Dissertation Advisor/Co-AdvisorWilliam Henry Brune, Committee Chair/Co-ChairJose Dolores Fuentes, Committee MemberJohannes Verlinde, Committee MemberAlbert Welford Castleman Jr., Committee Member