Advanced Search
DSpace@MIT

Climatology and Trends in the Forcing of the Stratospheric Ozone Transport

Research and Teaching Output of the MIT Community

Show simple item record

dc.contributor.author Monier, Erwan
dc.contributor.author Weare, Bryan C.
dc.date.accessioned 2011-03-23T18:38:30Z
dc.date.available 2011-03-23T18:38:30Z
dc.date.issued 2011-01
dc.identifier.uri http://globalchange.mit.edu/pubs/abstract.php?publication_id=2130
dc.identifier.uri http://hdl.handle.net/1721.1/61769
dc.description Abstract and PDF report are also available on the MIT Joint Program on the Science and Policy of Global Change website (http://globalchange.mit.edu/) en_US
dc.description.abstract A thorough analysis of the ozone transport was carried out using the Transformed-Mean Eulerian (TEM) tracer transport equation and the European Centre for Medium-Range Weather Forecasts (ECMWF) Re- Analysis (ERA-40). In this budget analysis, the chemical net production term, which is calculated as the residual of the other terms, displays the correct features of a chemical sink and source term, including location and seasonality, and shows a good agreement in magnitude compared to other methods of calculating ozone loss rates. This study provides further insight into the role of the eddy ozone transport and underlines its fundamental role in the recovery of the ozone hole during spring. The trend analysis reveals that the ozone hole intensification over 1980-2001 time period is not directly related to the trend in chemical losses, but more specifically to the balance in the trends in chemical losses and transport. That is because, in the SH from October to December, the large increase in the chemical destruction of ozone is balanced by an equally large trend in the eddy transport, associated with a small increase of the mean transport. This study shows that the increase in the eddy transport is characterized by more poleward ozone eddy flux by transient waves in the midlatitudes and by stationary waves in the polar region. This is primarily due to the presence of storm tracks in the midlatitudes and of the asymmetric Antarctic topography and ice-sea heating contrasts near the pole. Overall, this study makes clear of the fact that without an increase in the eddy ozone transport over the 1980-2001 time period, the ozone hole over Antarctica would be drastically more severe. This underlines the need for careful diagnostics of the eddy ozone transport in modeling studies of long-term changes in stratospheric ozone. en_US
dc.description.sponsorship This study received support from the MIT Joint Program on the Science and Policy of Global Change, which is funded by a consortium of government, industry and foundation sponsors and the National Science Foundation grant ATM0733698 en_US
dc.language.iso en_US en_US
dc.publisher MIT Joint Program on the Science and Policy of Global Change en_US
dc.relation.ispartofseries ;Report no. 191
dc.rights An error occurred on the license name. en
dc.rights.uri An error occurred getting the license - uri. en
dc.title Climatology and Trends in the Forcing of the Stratospheric Ozone Transport en_US
dc.type Technical Report en_US
dc.identifier.citation Report no. 191 en_US


Files in this item

Name Size Format Description
MITJPSPGC_Rpt191.pdf 1009.Kb PDF

The following license files are associated with this item:

This item appears in the following Collection(s)

Show simple item record

MIT-Mirage