Severe ozone depletion in the cold Arctic winter 2004–05
Severe ozone depletion in the cold Arctic winter 2004–05
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2004-05 北极寒冷冬季臭氧严重消耗
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
F. Stroh
中科院分区：
文献类型：
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作者：
M. Hobe;A. Ulanovsky;C. Volk;J. Grooß;S. Tilmes;P. Konopka;G. Günther;A. Werner;N. Spelten;G. Shur;V. Yushkov;F. Ravegnani;C. Schiller;R. Müller;F. Stroh
2005年3月7日，在M55 Geoppennica进入北极极涡的飞行期间，对臭氧、卤素物质、示踪剂和水蒸气进行了测量。在14公里以上发现了高达90%的氯活化和高达60%的臭氧损失，反映了2004/05年冬季北极平流层普遍存在的低温和广泛的PSC形成。CLaMS模型模拟的观测结果一般都能很好地再现。只有假设约70%的显著反硝化作用，才能重现所观察到的活性氯水平。在某些地区观察到高达0.5 ppm的中度脱水。我们推断3月7日19公里以下的部分臭氧柱损失为62（+8/-17）DU。
During a flight of the M55 Geophysica into the Arctic polar vortex on 7 March 2005, ozone, halogen species, tracers and water vapor were measured. Up to 90% chlorine activation and up to 60% ozone loss were found above 14 km, reflecting the low temperatures and extensive PSC formation prevalent in the Arctic stratosphere over the 2004/05 winter. Observations are generally well reproduced by CLaMS model simulations. The observed levels of active chlorine can only be reproduced by assuming significant denitrification of about 70%. Moderate dehydration up to 0.5 ppm is observed in some locations. We deduce a partial column ozone loss of 62 (+8/−17) DU below 19 km on 7 March.