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Costas A. Varotsos
Researcher at National and Kapodistrian University of Athens
Publications - 340
Citations - 9528
Costas A. Varotsos is an academic researcher from National and Kapodistrian University of Athens. The author has contributed to research in topics: Stratosphere & Ozone depletion. The author has an hindex of 64, co-authored 329 publications receiving 8358 citations. Previous affiliations of Costas A. Varotsos include Russian Academy of Sciences & China University of Mining and Technology.
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The southern hemisphere ozone hole split in 2002.
TL;DR: During September 2002, the ozone hole over the Antarctic was much smaller than in the previous six years, but has split into two separate holes, due to the appearance of sudden stratospheric warming that has never been observed before in the southern hemisphere.
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Observational evidence for chemical ozone depletion over the Arctic in winter 1991–92
Peter von der Gathen,Peter von der Gathen,Markus Rex,Markus Rex,Neil R. P. Harris,Neil R. P. Harris,Diana Lucic,Bjørn M. Knudsen,Geir O. Braathen,Hugo De Backer,R. Fabian,H. Fast,Manuel Gil,Esko Kyrö,I. S. Mikkelsen,Markku Rummukainen,Johannes Stähelin,Costas A. Varotsos +17 more
TL;DR: In this paper, the results of a new approach to calculate chemical ozone destruction rates that allows us to compare ozone concentrations in specific air parcels at different times, thus avoiding the need to make assumptions about ozone/tracer ratios.
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Scaling properties of air pollution in Athens, Greece and Baltimore, Maryland
TL;DR: In this paper, a trended fluctuation analysis is applied to the Athens air-pollution time-series consisting of hourly observations of ozone, nitrogen oxides, and particulate matter obtained at five air pollution monitoring stations during 1987-2003.
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Long-memory processes in ozone and temperature variations at the region 60° S–60° N
TL;DR: In this article, global column ozone and tropospheric temperature observations made by ground-based (1964-2004) and satellite-borne (1978−2004) instrumentation are analyzed and found to be positively correlated to those in larger time-intervals in a power-law fashion.
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Atmospheric greenhouse effect in the context of global climate change
TL;DR: A survey of the atmospheric greenhouse effect in the context of global climate change can be found in this article, where a detailed analysis of the present-day and paleoclimatic observational data has been conducted with subsequent consideration of numerical modelling results.