THULE

• 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=10.1.1.433.4135; http://www.wmo.int/pages/prog/arep/gaw/ozone/documents/arctic-bulletin-2005-2006.pdf

Chemically-induced total ozone column loss derived by comparing observations of total ozone with a chemical transport model calculation where ozone is treated as a chemically inert tracer. The observations are carried out with SAOZ UV-Visible spectrometers at high-latitude sites of the GAW-contributing Network for the Detection of Atmospheric Composition Change (NDACC). Although the 2005-06 Arctic stratospheric winter overall featured a weak vortex and was one of the mildest on record, low temperatures in December and January, combined with a displacement of the vortex towards sunlit latitudes resulted in significant ozone loss, although to a lesser extent than seen during cold Arctic winters. The plot is provided by Florence Goutail, Service d'A'éronomie, CNRS.