Antarctic air over New Zealand following vortex breakdown in 1998
| Autor: | Bryan Lawrence, Greg Bodeker, Jelena Ajtić, D. N. Heuff, Brian J. Connor, Joan E. Rosenfield, Cora E. Randall |
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| Přispěvatelé: | EGU, Publication, Department of Physics and Astronomy [Christchurch] (DPA), University of Canterbury [Christchurch], National Institute of Water and Atmospheric Research [Wellington] (NIWA), Laboratory for Atmospheric and Space Physics [Boulder] (LASP), University of Colorado [Boulder], British Atmospheric Data Centre, STFC Rutherford Appleton Laboratory (RAL), Science and Technology Facilities Council (STFC)-Science and Technology Facilities Council (STFC), Goddard Earth Sciences and Technology Center (GEST), University of Maryland [Baltimore County] (UMBC), University of Maryland System-University of Maryland System |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Atmospheric Science
Ozone 010504 meteorology & atmospheric sciences [SDU.STU]Sciences of the Universe [physics]/Earth Sciences 010402 general chemistry Atmospheric sciences 01 natural sciences Atmosphere chemistry.chemical_compound Meteorology and atmospheric dynamics (middle atmosphere dynamics) Polar vortex Earth and Planetary Sciences (miscellaneous) Potential temperature lcsh:Science Stratosphere 0105 earth and related environmental sciences [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.OCEAN] Sciences of the Universe [physics]/Ocean Atmosphere lcsh:QC801-809 Geology Astronomy and Astrophysics Ozone depletion lcsh:QC1-999 0104 chemical sciences Vortex lcsh:Geophysics. Cosmic physics Atmospheric composition and structure (middle atmosphere composition and chemistry) chemistry 13. Climate action Space and Planetary Science Middle latitudes [SDU.STU] Sciences of the Universe [physics]/Earth Sciences lcsh:Q lcsh:Physics |
| Zdroj: | Annales Geophysicae, Vol 21, Iss 11, Pp 2175-2183 (0000) Annales Geophysicae Annales Geophysicae, European Geosciences Union, 2003, 21 (11), pp.2175-2183 Scopus-Elsevier Annales Geophysicae, Vol 21, Pp 2175-2183 (2003) |
| ISSN: | 1432-0576 0992-7689 |
| Popis: | An ozonesonde profile over the Network for Detection of Stratospheric Change (NDSC) site at Lauder (45.0° S, 169.7° E), New Zealand, for 24 December 1998 showed atypically low ozone centered around 24 km altitude (600 K potential temperature). The origin of the anomaly is explained using reverse domain filling (RDF) calculations combined with a PV/O3 fitting technique applied to ozone measurements from the Polar Ozone and Aerosol Measurement (POAM) III instrument. The RDF calculations for two isentropic surfaces, 550 and 600 K, show that ozone-poor air from the Antarctic polar vortex reached New Zealand on 24–26 December 1998. The vortex air on the 550 K isentrope originated in the ozone hole region, unlike the air on 600 K where low ozone values were caused by dynamical effects. High-resolution ozone maps were generated, and their examination shows that a vortex remnant situated above New Zealand was the cause of the altered ozone profile on 24 December. The maps also illustrate mixing of the vortex filaments into southern midlatitudes, whereby the overall mid-latitude ozone levels were decreased.Key words. Atmospheric composition and structure (middle atmosphere composition and chemistry) – Meteorology and atmospheric dynamics (middle atmosphere dynamics) |
| Databáze: | OpenAIRE |
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