Fundamental differences between Arctic and Antarctic ozone depletion
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چکیده
منابع مشابه
Fundamental differences between Arctic and Antarctic ozone depletion.
Antarctic ozone depletion is associated with enhanced chlorine from anthropogenic chlorofluorocarbons and heterogeneous chemistry under cold conditions. The deep Antarctic "hole" contrasts with the generally weaker depletions observed in the warmer Arctic. An unusually cold Arctic stratospheric season occurred in 2011, raising the question of how the Arctic ozone chemistry in that year compares...
متن کاملContrasts between Antarctic and Arctic ozone depletion.
This work surveys the depth and character of ozone depletion in the Antarctic and Arctic using available long balloon-borne and ground-based records that cover multiple decades from ground-based sites. Such data reveal changes in the range of ozone values including the extremes observed as polar air passes over the stations. Antarctic ozone observations reveal widespread and massive local deple...
متن کاملAntarctic ozone depletion indicators
Indicators of Antarctic ozone depletion G. E. Bodeker, H. Shiona, and H. Eskes National Institute of Water and Atmospheric Research, Lauder, New Zealand Koninklijk Nederlands Meteorologisch Instituut, De Bilt, The Netherlands Received: 17 March 2005 – Accepted: 9 May 2005 – Published: 8 June 2005 Correspondence to: G. E. Bodeker ([email protected]) © 2005 Author(s). This work is licensed und...
متن کاملIndicators of Antarctic ozone depletion
An assimilated data base of total column ozone measurements from satellites has been used to generate a set of indicators describing attributes of the Antarctic ozone hole for the period 1979 to 2003, including (i) daily measures of the area over Antarctica where ozone levels are below 150 DU, below 220 DU, more than 30% below 1979 to 1981 norms, and more than 50% below 1979 to 1981 norms, (ii)...
متن کاملSurface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records
Episodes of ozone depletion in the lowermost Arctic atmosphere (0–2 km) at polar sunrise have been intensively studied at Alert, Canada, and are thought to result from catalytic reactions involving bromine. Recent observations of high concentrations of tropospheric BrO over large areas of the Arctic and Antarctic suggest that such depletion events should also be seen by ozonesondes at other pol...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2014
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1319307111