Spatial, temporal, and vertical variability of polar stratospheric ozone loss in the Arctic winters 2004/2005–2009/2010

摘要: Abstract. The polar stratospheric ozone loss during the Arctic winters 2004/2005–2009/2010 is investigated by using high resolution simulations from chemical transport model Mimosa-Chim and observations Aura Microwave Limb Sounder (MLS), applying passive tracer technique. winter 2004/2005 shows coldest temperatures, highest area of clouds strongest chlorine activation in 2004/2005–2009/2010. diagnosed both measurements inside vortex at 475 K ranges 0.7 ppmv warm 2005/2006 to 1.5–1.7 cold 2004/2005. Halogenated (chlorine bromine) catalytic cycles contribute 75–90% this level. At 675 lowest 0.3–0.5 computed 2008/2009, 1.3 estimated 2006/2007 MLS. Most (60–75%) level results nitrogen rather than halogen cycles. levels simulated evolution reasonably good agreement with MLS observations. partial column 350–850 deduced calculations sampling locations between 43 DU 109 2004/2005, while those derived range 26 115 for same winters. depletion that vertical larger 350–550 19±7 on average, mainly due NOx chemistry. estimates are generally ground-based ultraviolet-visible spectrometer total respective winters, except 2010.