The Impact of Vortex Breakdown on Ozone over New Zealand in 1998
2001
Аутори
Ajtić, JelenaConnor, Brian J.
Randall, Cora E.
Bodeker, Gregory E.
Lawrence, Bryan N.
Bevilacqua, Richard M.
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
After Antarctic vortex breakdown, significant changes in the total ozone column at southern mid-latitudes can be observed. In the late 1990s, breakdown often occurrred in early to mid-December, so that large vortex remnants were at southern mid-latitudes around the time of summer solstice, when they would have a maximum effect on UV. Examination of ozonesonde profiles, meteorological analyses, and ozone maps derived from POAM III data, suggest that the 1998 Antarctic vortex breakdown had a substantial impact on stratospheric ozone levels above New Zealand. To investigate this period, a back-trajectory model was used to track the origin of air parcels at 34-48 S and 162-178 E, on the 400, 500, 600 and 700 K potential temperature surfaces. At 600 K, vortex air covered 50-60\% of New Zealand in mid-December, and nearly all of the South Island after Christmas. Vortex air was also over parts of the North Island at 500 K by the end of the year. The parcels were then initialized with ozone mi...xing ratio values according to the observed relation between potential vorticity and ozone. This relationship was derived from the correlation between United Kingdom Meteorological Office (UKMO) potential vorticity analyses and POAM III ozone profiles. Assuming that over this period ozone can be considered a passive tracer, ozone profiles above New Zealand were modelled, and compared to available ozonesonde measurements. The decrease in total ozone above New Zealand due to the vortex breakdown was then quantified.
Кључне речи:
Middle atmosphere: composition and chemistry / Middle atmosphere: constituent transport and chemistryИзвор:
Eos, Transactions, American Geophysical Union, 82(20), May 29 – June 2, Boston, USA, 2001, A51B-03-Издавач:
- AGU
Институција/група
Fakultet veterinarske medicineTY - CONF AU - Ajtić, Jelena AU - Connor, Brian J. AU - Randall, Cora E. AU - Bodeker, Gregory E. AU - Lawrence, Bryan N. AU - Bevilacqua, Richard M. PY - 2001 UR - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2434 AB - After Antarctic vortex breakdown, significant changes in the total ozone column at southern mid-latitudes can be observed. In the late 1990s, breakdown often occurrred in early to mid-December, so that large vortex remnants were at southern mid-latitudes around the time of summer solstice, when they would have a maximum effect on UV. Examination of ozonesonde profiles, meteorological analyses, and ozone maps derived from POAM III data, suggest that the 1998 Antarctic vortex breakdown had a substantial impact on stratospheric ozone levels above New Zealand. To investigate this period, a back-trajectory model was used to track the origin of air parcels at 34-48 S and 162-178 E, on the 400, 500, 600 and 700 K potential temperature surfaces. At 600 K, vortex air covered 50-60\% of New Zealand in mid-December, and nearly all of the South Island after Christmas. Vortex air was also over parts of the North Island at 500 K by the end of the year. The parcels were then initialized with ozone mixing ratio values according to the observed relation between potential vorticity and ozone. This relationship was derived from the correlation between United Kingdom Meteorological Office (UKMO) potential vorticity analyses and POAM III ozone profiles. Assuming that over this period ozone can be considered a passive tracer, ozone profiles above New Zealand were modelled, and compared to available ozonesonde measurements. The decrease in total ozone above New Zealand due to the vortex breakdown was then quantified. PB - AGU C3 - Eos, Transactions, American Geophysical Union, 82(20), May 29 – June 2, Boston, USA T1 - The Impact of Vortex Breakdown on Ozone over New Zealand in 1998 SP - A51B-03 UR - https://hdl.handle.net/21.15107/rcub_veterinar_2434 ER -
@conference{ author = "Ajtić, Jelena and Connor, Brian J. and Randall, Cora E. and Bodeker, Gregory E. and Lawrence, Bryan N. and Bevilacqua, Richard M.", year = "2001", abstract = "After Antarctic vortex breakdown, significant changes in the total ozone column at southern mid-latitudes can be observed. In the late 1990s, breakdown often occurrred in early to mid-December, so that large vortex remnants were at southern mid-latitudes around the time of summer solstice, when they would have a maximum effect on UV. Examination of ozonesonde profiles, meteorological analyses, and ozone maps derived from POAM III data, suggest that the 1998 Antarctic vortex breakdown had a substantial impact on stratospheric ozone levels above New Zealand. To investigate this period, a back-trajectory model was used to track the origin of air parcels at 34-48 S and 162-178 E, on the 400, 500, 600 and 700 K potential temperature surfaces. At 600 K, vortex air covered 50-60\% of New Zealand in mid-December, and nearly all of the South Island after Christmas. Vortex air was also over parts of the North Island at 500 K by the end of the year. The parcels were then initialized with ozone mixing ratio values according to the observed relation between potential vorticity and ozone. This relationship was derived from the correlation between United Kingdom Meteorological Office (UKMO) potential vorticity analyses and POAM III ozone profiles. Assuming that over this period ozone can be considered a passive tracer, ozone profiles above New Zealand were modelled, and compared to available ozonesonde measurements. The decrease in total ozone above New Zealand due to the vortex breakdown was then quantified.", publisher = "AGU", journal = "Eos, Transactions, American Geophysical Union, 82(20), May 29 – June 2, Boston, USA", title = "The Impact of Vortex Breakdown on Ozone over New Zealand in 1998", pages = "A51B-03", url = "https://hdl.handle.net/21.15107/rcub_veterinar_2434" }
Ajtić, J., Connor, B. J., Randall, C. E., Bodeker, G. E., Lawrence, B. N.,& Bevilacqua, R. M.. (2001). The Impact of Vortex Breakdown on Ozone over New Zealand in 1998. in Eos, Transactions, American Geophysical Union, 82(20), May 29 – June 2, Boston, USA AGU., A51B-03. https://hdl.handle.net/21.15107/rcub_veterinar_2434
Ajtić J, Connor BJ, Randall CE, Bodeker GE, Lawrence BN, Bevilacqua RM. The Impact of Vortex Breakdown on Ozone over New Zealand in 1998. in Eos, Transactions, American Geophysical Union, 82(20), May 29 – June 2, Boston, USA. 2001;:A51B-03. https://hdl.handle.net/21.15107/rcub_veterinar_2434 .
Ajtić, Jelena, Connor, Brian J., Randall, Cora E., Bodeker, Gregory E., Lawrence, Bryan N., Bevilacqua, Richard M., "The Impact of Vortex Breakdown on Ozone over New Zealand in 1998" in Eos, Transactions, American Geophysical Union, 82(20), May 29 – June 2, Boston, USA (2001):A51B-03, https://hdl.handle.net/21.15107/rcub_veterinar_2434 .