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Ocean, sea-ice, atmosphere oscillations in the Southern Ocean as simulated by the SINTEX coupled model
Language
English
Obiettivo Specifico
4A. Clima e Oceani
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
/31(2004)
ISSN
0094-8276
Electronic ISSN
1944-8007
Publisher
American Geophysical Union
Issued date
May 29, 2004
Abstract
1This study evaluates the Antarctic Circumpolar Wave
(ACW) as simulated by the SINTEX coupled model. We
found evidence that sea-ice treatment plays a crucial role
on simulating the ACW. In particular, SST anomalies at
interannual time scales describe a propagating ACW-like
pattern when a dynamic thermodynamic sea-ice model
is coupled with the ocean, but when sea-ice is relaxed
to climatology, anomalies occur as zonally symmetric
patterns that do not propagate in longitude. Moreover,
from the experiment with an active sea-ice component
we saw that ACW-like oscillations are strongly modulated
by low frequency variability. Our result adds some
extra confidence to previous studies based on relatively
short series of observed data.
(ACW) as simulated by the SINTEX coupled model. We
found evidence that sea-ice treatment plays a crucial role
on simulating the ACW. In particular, SST anomalies at
interannual time scales describe a propagating ACW-like
pattern when a dynamic thermodynamic sea-ice model
is coupled with the ocean, but when sea-ice is relaxed
to climatology, anomalies occur as zonally symmetric
patterns that do not propagate in longitude. Moreover,
from the experiment with an active sea-ice component
we saw that ACW-like oscillations are strongly modulated
by low frequency variability. Our result adds some
extra confidence to previous studies based on relatively
short series of observed data.
Sponsors
This research was supported by the
PREDICATE EU project (EVK2 – CT-1999 – 0020,). First author was supported by the PRISM EU project (EVR1 – CT-2001 – 40012).
PREDICATE EU project (EVK2 – CT-1999 – 0020,). First author was supported by the PRISM EU project (EVR1 – CT-2001 – 40012).
References
Baines, P. G., and W. J. Cai (2000), Analysis of an interactive instability
mechanism for the Antarctic Circumpolar Wave, J. Climate, 13(11),
1831 – 1844.
Cai, W., and P. G. Baines (2001), Forcing of the Antarctic Circumpolar
Wave by El Nin˜ o-Southern Oscillation teleconnections, J. Geophys. Res.,
106(C5), 9019 – 9038.
Carril, A. F., and A. Navarra (2001), Low-frequency variability of the
Antarctic Circumpolar Wave, Geophys. Res. Lett., 28(24), 4623 – 4626.
Connolley, W. F. (2002), Long-term variation of the Antarctic Circumpolar
Wave, J. Geophys. Res., 107(C12), 8076, doi:10.1029/2000JC000380.
Fichefet, T., and M. A. Morales Maqueda (1997), Sensitivity of a global sea
i ce model t o t he t reat ment of i ce t hermodynami cs and dynami cs ,
J. Geophys. Res., 102(C6), 12,609 – 12,646.
Fichefet, T., B. Tartinville, and H. Goosse (2003), Antarctic sea ice varia-
bility during 1958 – 1999: A simulation with a global ice-ocean model,
J. Geophys. Res., 108(C3), 3102, doi:10.1029/2001JC001148.
Fr anki gnoul , C. , E. Kest enare, M. Bot zet , A. F. Car ri l , H. Dr ange,
A. Pardaens, L. Terray, and R. Sutton (2004), An intercomparison
between the surface heat flux feedback in five coupled models, COADS
and the NCEP reanalysis, Clim. Dyn., 22(4), 373 – 388.
Gloersen, P., and W. B. White (2001), Reestablishing the circumpolar wave
in sea ice around Antarctica from one winter to the next, J. Geophys.
Res., 106(C3), 4391 – 4395.
Gualdi, S., A. Navarra, E. Guilyardi, and P. Delecluse (2003a), Assessment
of the Tropical Indo-Pacific Climate in the SINTEX CGCM, Annals of
Geophysics, 46(1), 1 – 26.
Gualdi, S., E. Guilyardi, A. Navarra, S. Masina, and P. Delecluse (2003b),
The interannual variability in the tropical Indian Ocean as simulated by a
CGCM, Clim. Dyn., 20(6), 567 – 582.
Jacobs, G. A., and J. L. Mitchell (1996), Ocean Circulation variations
associated with the Antactic Circumpolar Wave, Geophys. Res. Lett.,
23(21), 2947 – 2950.
Peterson, R. G., and W. B. White (1998), Slow oceanic teleconnections
linking the Antarctic Circumpolar Wave with tropical El Nino-Southern
Oscillation, J. Geophys. Res., 103(C11), 24,573 – 24,583.
Rayner, N. A., D. E. Parker, P. Frich, E. B. Horton, C. K. Folland, and L. V.
Alexander (2000), The HadISST1 Global Sea-Ice and Sea Surface Tem-
perature Dataset, 1871 – 1999, Hadley Centre Technical Note 17, Hadley
Centre Clim. Pred. Res., Exeter, UK.
Torrence, C., and G. P. Compo (1998), A practical guide to wavelet anal-
ysis, Bull. Am. Meteorol. Soc., 79(1), 61 – 78.
Venegas, S. A., and M. R. Drinkwater (2001), Sea ice, atmosphere and
upper ocean variability in the Weddell Sea, Antarctica, J. Geophys.
Res., 106(C8), 16,747 – 16,765.
Venegas, S. A., M. R. Drinkwater, and G. Shaffer (2001), Coupled oscilla-
tions in Antarctic sea ice and atmosphere in the South Pacific sector,
Geophys. Res. Lett., 28(17), 3301 – 3304.
Venegas, S. A. (2003), The Antarctic Circumpolar Wave: A combination of
two signals?, J. Climate, 16(15), 2509 – 2525.
White, W. B., and D. R. Cayan (2000), A global El Nino-Southern Oscilla-
tion wave in surface temperature and pressure and its interdecadal mod-
ulation from 1900 to 1997, J. Geophys. Res., 105(C5), 11,223 – 11,242.
White, W. B., and R. G. Peterson (1996), An Antarctic Circumpolar Wave
i n surface pressure, wi nd, t emperatur e and sea-i ce ext ent , Nat ure,
380(6576), 699 – 702.
mechanism for the Antarctic Circumpolar Wave, J. Climate, 13(11),
1831 – 1844.
Cai, W., and P. G. Baines (2001), Forcing of the Antarctic Circumpolar
Wave by El Nin˜ o-Southern Oscillation teleconnections, J. Geophys. Res.,
106(C5), 9019 – 9038.
Carril, A. F., and A. Navarra (2001), Low-frequency variability of the
Antarctic Circumpolar Wave, Geophys. Res. Lett., 28(24), 4623 – 4626.
Connolley, W. F. (2002), Long-term variation of the Antarctic Circumpolar
Wave, J. Geophys. Res., 107(C12), 8076, doi:10.1029/2000JC000380.
Fichefet, T., and M. A. Morales Maqueda (1997), Sensitivity of a global sea
i ce model t o t he t reat ment of i ce t hermodynami cs and dynami cs ,
J. Geophys. Res., 102(C6), 12,609 – 12,646.
Fichefet, T., B. Tartinville, and H. Goosse (2003), Antarctic sea ice varia-
bility during 1958 – 1999: A simulation with a global ice-ocean model,
J. Geophys. Res., 108(C3), 3102, doi:10.1029/2001JC001148.
Fr anki gnoul , C. , E. Kest enare, M. Bot zet , A. F. Car ri l , H. Dr ange,
A. Pardaens, L. Terray, and R. Sutton (2004), An intercomparison
between the surface heat flux feedback in five coupled models, COADS
and the NCEP reanalysis, Clim. Dyn., 22(4), 373 – 388.
Gloersen, P., and W. B. White (2001), Reestablishing the circumpolar wave
in sea ice around Antarctica from one winter to the next, J. Geophys.
Res., 106(C3), 4391 – 4395.
Gualdi, S., A. Navarra, E. Guilyardi, and P. Delecluse (2003a), Assessment
of the Tropical Indo-Pacific Climate in the SINTEX CGCM, Annals of
Geophysics, 46(1), 1 – 26.
Gualdi, S., E. Guilyardi, A. Navarra, S. Masina, and P. Delecluse (2003b),
The interannual variability in the tropical Indian Ocean as simulated by a
CGCM, Clim. Dyn., 20(6), 567 – 582.
Jacobs, G. A., and J. L. Mitchell (1996), Ocean Circulation variations
associated with the Antactic Circumpolar Wave, Geophys. Res. Lett.,
23(21), 2947 – 2950.
Peterson, R. G., and W. B. White (1998), Slow oceanic teleconnections
linking the Antarctic Circumpolar Wave with tropical El Nino-Southern
Oscillation, J. Geophys. Res., 103(C11), 24,573 – 24,583.
Rayner, N. A., D. E. Parker, P. Frich, E. B. Horton, C. K. Folland, and L. V.
Alexander (2000), The HadISST1 Global Sea-Ice and Sea Surface Tem-
perature Dataset, 1871 – 1999, Hadley Centre Technical Note 17, Hadley
Centre Clim. Pred. Res., Exeter, UK.
Torrence, C., and G. P. Compo (1998), A practical guide to wavelet anal-
ysis, Bull. Am. Meteorol. Soc., 79(1), 61 – 78.
Venegas, S. A., and M. R. Drinkwater (2001), Sea ice, atmosphere and
upper ocean variability in the Weddell Sea, Antarctica, J. Geophys.
Res., 106(C8), 16,747 – 16,765.
Venegas, S. A., M. R. Drinkwater, and G. Shaffer (2001), Coupled oscilla-
tions in Antarctic sea ice and atmosphere in the South Pacific sector,
Geophys. Res. Lett., 28(17), 3301 – 3304.
Venegas, S. A. (2003), The Antarctic Circumpolar Wave: A combination of
two signals?, J. Climate, 16(15), 2509 – 2525.
White, W. B., and D. R. Cayan (2000), A global El Nino-Southern Oscilla-
tion wave in surface temperature and pressure and its interdecadal mod-
ulation from 1900 to 1997, J. Geophys. Res., 105(C5), 11,223 – 11,242.
White, W. B., and R. G. Peterson (1996), An Antarctic Circumpolar Wave
i n surface pressure, wi nd, t emperatur e and sea-i ce ext ent , Nat ure,
380(6576), 699 – 702.
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