Long-term changes in tropospheric ozone
Tropospheric ozone changes are investigated using a selected network of surface and ozonesonde sites to give a broad geographic picture of long-term variations. The picture of long-term tropospheric ozone changes is a varied one in terms of both the sign and magnitude of trends and in the possible c...
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Online Access: | https://hdl.handle.net/20.500.11765/11814 |
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ftaemet:oai:repositorio.aemet.es:20.500.11765/11814 2024-06-23T07:50:51+00:00 Long-term changes in tropospheric ozone Oltmans, Samuel J. Lefohn, Allen S. Harris, J. M. Galbally, Ian E. Scheel, H. E. Bodeker, G. Brunke, E.-G. Claude, H. Tarasick, David W. Johnson, B. J. Simmonds, Peter Shadwick, Douglas S. Anlauf, K. Hayden, Katherine Schmidlin, Frank J. Fujimoto, T. Akagi, K. Meyer, C. P. Nichol, Sylvia Davies, Jonathan Redondas, Alberto Cuevas Agulló, Emilio 2006 https://hdl.handle.net/20.500.11765/11814 eng eng Elsevier https://dx.doi.org/10.1016/j.atmosenv.2006.01.029 Atmospheric Environment. 2006, 40, p. 3156-3173 1352-2310 http://hdl.handle.net/20.500.11765/11814 info:eu-repo/semantics/openAccess Trends Surface ozone Ozonesondes Tropospheric chemistry Ozone transport info:eu-repo/semantics/article 2006 ftaemet https://doi.org/20.500.11765/1181410.1016/j.atmosenv.2006.01.029 2024-06-03T14:17:57Z Tropospheric ozone changes are investigated using a selected network of surface and ozonesonde sites to give a broad geographic picture of long-term variations. The picture of long-term tropospheric ozone changes is a varied one in terms of both the sign and magnitude of trends and in the possible causes for the changes. At mid latitudes of the S.H. three time series of ∼20 years in length agree in showing increases that are strongest in the austral spring (August–October). Profile measurements show this increase extending through the mid troposphere but not into the highest levels of the troposphere. In the N.H. in the Arctic a period of declining ozone in the troposphere through the 1980s into the mid-1990s has reversed and the overall change is small. The decadal-scale variations in the troposphere in this region are related in part to changes in the lowermost stratosphere. At mid latitudes in the N.H., continental Europe and Japan showed significant increases in the 1970s and 1980s. Over North America rises in the 1970s are less than those seen in Europe and Japan, suggesting significant regional differences. In all three of these mid latitude, continental regions tropospheric ozone amounts appear to have leveled off or in some cases declined in the more recent decades. Over the North Atlantic three widely separated sites show significant increases since the late-1990s that may have peaked in recent years. In the N.H. tropics both the surface record and the ozonesondes in Hawaii show a significant increase in the autumn months in the most recent decade compared to earlier periods that drives the overall increase seen in the 30-year record. This appears to be related to a shift in the transport pattern during this season with more frequent flow from higher latitudes in the latest decade. Article in Journal/Newspaper Arctic North Atlantic ARCIMÍS (Archivo Climatológico y Meteorológico Institucional - AEMET, Agencia Estatal de Meteorología) Arctic Austral Atmospheric Environment 40 17 3156 3173 |
institution |
Open Polar |
collection |
ARCIMÍS (Archivo Climatológico y Meteorológico Institucional - AEMET, Agencia Estatal de Meteorología) |
op_collection_id |
ftaemet |
language |
English |
topic |
Trends Surface ozone Ozonesondes Tropospheric chemistry Ozone transport |
spellingShingle |
Trends Surface ozone Ozonesondes Tropospheric chemistry Ozone transport Oltmans, Samuel J. Lefohn, Allen S. Harris, J. M. Galbally, Ian E. Scheel, H. E. Bodeker, G. Brunke, E.-G. Claude, H. Tarasick, David W. Johnson, B. J. Simmonds, Peter Shadwick, Douglas S. Anlauf, K. Hayden, Katherine Schmidlin, Frank J. Fujimoto, T. Akagi, K. Meyer, C. P. Nichol, Sylvia Davies, Jonathan Redondas, Alberto Cuevas Agulló, Emilio Long-term changes in tropospheric ozone |
topic_facet |
Trends Surface ozone Ozonesondes Tropospheric chemistry Ozone transport |
description |
Tropospheric ozone changes are investigated using a selected network of surface and ozonesonde sites to give a broad geographic picture of long-term variations. The picture of long-term tropospheric ozone changes is a varied one in terms of both the sign and magnitude of trends and in the possible causes for the changes. At mid latitudes of the S.H. three time series of ∼20 years in length agree in showing increases that are strongest in the austral spring (August–October). Profile measurements show this increase extending through the mid troposphere but not into the highest levels of the troposphere. In the N.H. in the Arctic a period of declining ozone in the troposphere through the 1980s into the mid-1990s has reversed and the overall change is small. The decadal-scale variations in the troposphere in this region are related in part to changes in the lowermost stratosphere. At mid latitudes in the N.H., continental Europe and Japan showed significant increases in the 1970s and 1980s. Over North America rises in the 1970s are less than those seen in Europe and Japan, suggesting significant regional differences. In all three of these mid latitude, continental regions tropospheric ozone amounts appear to have leveled off or in some cases declined in the more recent decades. Over the North Atlantic three widely separated sites show significant increases since the late-1990s that may have peaked in recent years. In the N.H. tropics both the surface record and the ozonesondes in Hawaii show a significant increase in the autumn months in the most recent decade compared to earlier periods that drives the overall increase seen in the 30-year record. This appears to be related to a shift in the transport pattern during this season with more frequent flow from higher latitudes in the latest decade. |
format |
Article in Journal/Newspaper |
author |
Oltmans, Samuel J. Lefohn, Allen S. Harris, J. M. Galbally, Ian E. Scheel, H. E. Bodeker, G. Brunke, E.-G. Claude, H. Tarasick, David W. Johnson, B. J. Simmonds, Peter Shadwick, Douglas S. Anlauf, K. Hayden, Katherine Schmidlin, Frank J. Fujimoto, T. Akagi, K. Meyer, C. P. Nichol, Sylvia Davies, Jonathan Redondas, Alberto Cuevas Agulló, Emilio |
author_facet |
Oltmans, Samuel J. Lefohn, Allen S. Harris, J. M. Galbally, Ian E. Scheel, H. E. Bodeker, G. Brunke, E.-G. Claude, H. Tarasick, David W. Johnson, B. J. Simmonds, Peter Shadwick, Douglas S. Anlauf, K. Hayden, Katherine Schmidlin, Frank J. Fujimoto, T. Akagi, K. Meyer, C. P. Nichol, Sylvia Davies, Jonathan Redondas, Alberto Cuevas Agulló, Emilio |
author_sort |
Oltmans, Samuel J. |
title |
Long-term changes in tropospheric ozone |
title_short |
Long-term changes in tropospheric ozone |
title_full |
Long-term changes in tropospheric ozone |
title_fullStr |
Long-term changes in tropospheric ozone |
title_full_unstemmed |
Long-term changes in tropospheric ozone |
title_sort |
long-term changes in tropospheric ozone |
publisher |
Elsevier |
publishDate |
2006 |
url |
https://hdl.handle.net/20.500.11765/11814 |
geographic |
Arctic Austral |
geographic_facet |
Arctic Austral |
genre |
Arctic North Atlantic |
genre_facet |
Arctic North Atlantic |
op_relation |
https://dx.doi.org/10.1016/j.atmosenv.2006.01.029 Atmospheric Environment. 2006, 40, p. 3156-3173 1352-2310 http://hdl.handle.net/20.500.11765/11814 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.11765/1181410.1016/j.atmosenv.2006.01.029 |
container_title |
Atmospheric Environment |
container_volume |
40 |
container_issue |
17 |
container_start_page |
3156 |
op_container_end_page |
3173 |
_version_ |
1802641795935371264 |