Tropospheric ozone depletion in polar regions - A comparison of observations in the Arctic and Antarctic
ABSTRACTThe dynamics of tropospheric ozone variations in the Arctic (Ny-Ålesund, Spitsbergen, 79°N, 12°E) and in Antarctica (Neumayer-Station, 70°S, 8°W) were investigated for the period January 1993 to June 1994. Continuous surface ozone measurements, vertical profiles of tropospheric ozone by ECC-...
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ftawi:oai:epic.awi.de:3346 2023-09-05T13:13:03+02:00 Tropospheric ozone depletion in polar regions - A comparison of observations in the Arctic and Antarctic Wessel, S. Aoki, S. Winkler, P. Weller, Rolf Herber, Andreas Gernandt, Hartwig Schrems, Otto 1998 https://epic.awi.de/id/eprint/3346/ https://hdl.handle.net/10013/epic.13929 unknown Wessel, S. , Aoki, S. , Winkler, P. , Weller, R. orcid:0000-0003-4880-5572 , Herber, A. orcid:0000-0001-6651-3835 , Gernandt, H. and Schrems, O. (1998) Tropospheric ozone depletion in polar regions - A comparison of observations in the Arctic and Antarctic , Tellus, Vol. 50B, pp. 34-50 . hdl:10013/epic.13929 EPIC3Tellus, Vol. 50B, pp. 34-50 Article isiRev 1998 ftawi 2023-08-22T19:43:59Z ABSTRACTThe dynamics of tropospheric ozone variations in the Arctic (Ny-Ålesund, Spitsbergen, 79°N, 12°E) and in Antarctica (Neumayer-Station, 70°S, 8°W) were investigated for the period January 1993 to June 1994. Continuous surface ozone measurements, vertical profiles of tropospheric ozone by ECC-sondes, meteorological parameters, trajectories as well as ice charts were available for analysis. Informations about the origins of the advected air masses were derived from 5-days back-trajectory analyses. Seven tropospheric ozone minima were observed at Ny-Ålesund in the period from March to June 1994 during which the surface ozone mixing ratios decreased from typical background concentrations around 40 ppbv to values between 1 ppbv and 17 ppbv(1 ppbv O3 corresponds to one part of O3 in 109 parts of ambient air by volume). Four surface ozone minima were detected in August and September 1993 at Neumayer-Station with absolute ozone mixing ratios between 8 ppbv and 14 ppbv throughout the minima. At both measuring stations the ozone minima were detected during polar spring. They covered periods between 1 and 4 days (Arctic) and 1 and 2 days (Antarctica), respectively. Furthermore it was found that in both polar regions the ozone depletion events were confined to the planetary boundary layer with a capping temperature inversion at the upper limit of the ozone poor air mass. Inside this ozone poor layer a stable stratification was obvious. Back-trajectories analyses revealed that the ozone depleted air masses were transported across the marine, ice-covered regions of the central Arctic and the South Atlantic Ocean. These comparable observations in both polar regions suggest a similar ozone destruction mechanism which is responsible for an efficient ozone decay. Nevertheless distinct differences could be found regarding the vertical structure of the ozone depleted layers. In the Arctic the ozone poor layer developed from the surface up to a temperature inversion, whereas in the Antarctic elevated ozone depleted air masses ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic Arctic Ny Ålesund Ny-Ålesund South Atlantic Ocean Spitsbergen Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Arctic Neumayer Neumayer Station Ny-Ålesund The Antarctic |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
ABSTRACTThe dynamics of tropospheric ozone variations in the Arctic (Ny-Ålesund, Spitsbergen, 79°N, 12°E) and in Antarctica (Neumayer-Station, 70°S, 8°W) were investigated for the period January 1993 to June 1994. Continuous surface ozone measurements, vertical profiles of tropospheric ozone by ECC-sondes, meteorological parameters, trajectories as well as ice charts were available for analysis. Informations about the origins of the advected air masses were derived from 5-days back-trajectory analyses. Seven tropospheric ozone minima were observed at Ny-Ålesund in the period from March to June 1994 during which the surface ozone mixing ratios decreased from typical background concentrations around 40 ppbv to values between 1 ppbv and 17 ppbv(1 ppbv O3 corresponds to one part of O3 in 109 parts of ambient air by volume). Four surface ozone minima were detected in August and September 1993 at Neumayer-Station with absolute ozone mixing ratios between 8 ppbv and 14 ppbv throughout the minima. At both measuring stations the ozone minima were detected during polar spring. They covered periods between 1 and 4 days (Arctic) and 1 and 2 days (Antarctica), respectively. Furthermore it was found that in both polar regions the ozone depletion events were confined to the planetary boundary layer with a capping temperature inversion at the upper limit of the ozone poor air mass. Inside this ozone poor layer a stable stratification was obvious. Back-trajectories analyses revealed that the ozone depleted air masses were transported across the marine, ice-covered regions of the central Arctic and the South Atlantic Ocean. These comparable observations in both polar regions suggest a similar ozone destruction mechanism which is responsible for an efficient ozone decay. Nevertheless distinct differences could be found regarding the vertical structure of the ozone depleted layers. In the Arctic the ozone poor layer developed from the surface up to a temperature inversion, whereas in the Antarctic elevated ozone depleted air masses ... |
format |
Article in Journal/Newspaper |
author |
Wessel, S. Aoki, S. Winkler, P. Weller, Rolf Herber, Andreas Gernandt, Hartwig Schrems, Otto |
spellingShingle |
Wessel, S. Aoki, S. Winkler, P. Weller, Rolf Herber, Andreas Gernandt, Hartwig Schrems, Otto Tropospheric ozone depletion in polar regions - A comparison of observations in the Arctic and Antarctic |
author_facet |
Wessel, S. Aoki, S. Winkler, P. Weller, Rolf Herber, Andreas Gernandt, Hartwig Schrems, Otto |
author_sort |
Wessel, S. |
title |
Tropospheric ozone depletion in polar regions - A comparison of observations in the Arctic and Antarctic |
title_short |
Tropospheric ozone depletion in polar regions - A comparison of observations in the Arctic and Antarctic |
title_full |
Tropospheric ozone depletion in polar regions - A comparison of observations in the Arctic and Antarctic |
title_fullStr |
Tropospheric ozone depletion in polar regions - A comparison of observations in the Arctic and Antarctic |
title_full_unstemmed |
Tropospheric ozone depletion in polar regions - A comparison of observations in the Arctic and Antarctic |
title_sort |
tropospheric ozone depletion in polar regions - a comparison of observations in the arctic and antarctic |
publishDate |
1998 |
url |
https://epic.awi.de/id/eprint/3346/ https://hdl.handle.net/10013/epic.13929 |
geographic |
Antarctic Arctic Neumayer Neumayer Station Ny-Ålesund The Antarctic |
geographic_facet |
Antarctic Arctic Neumayer Neumayer Station Ny-Ålesund The Antarctic |
genre |
Antarc* Antarctic Antarctica Arctic Arctic Ny Ålesund Ny-Ålesund South Atlantic Ocean Spitsbergen |
genre_facet |
Antarc* Antarctic Antarctica Arctic Arctic Ny Ålesund Ny-Ålesund South Atlantic Ocean Spitsbergen |
op_source |
EPIC3Tellus, Vol. 50B, pp. 34-50 |
op_relation |
Wessel, S. , Aoki, S. , Winkler, P. , Weller, R. orcid:0000-0003-4880-5572 , Herber, A. orcid:0000-0001-6651-3835 , Gernandt, H. and Schrems, O. (1998) Tropospheric ozone depletion in polar regions - A comparison of observations in the Arctic and Antarctic , Tellus, Vol. 50B, pp. 34-50 . hdl:10013/epic.13929 |
_version_ |
1776203226398326784 |