Arctic decadal and interdecadal variability
Abstract. Atmospheric and oceanic variability in the Arctic shows the existence of several oscillatory modes. The decadal-scale mode associated with the Arctic Oscillation (AO) and a low-frequency oscillation (LFO) with an approximate time scale of 60-80 years, dominate. Both modes were positive in...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.464.4321 2023-05-15T14:32:40+02:00 Arctic decadal and interdecadal variability Igor V. Polyakov Mark A. Johnson The Pennsylvania State University CiteSeerX Archives 2000 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.464.4321 http://ruby.fgcu.edu/courses/twimberley/EnviroPhilo/Decadal.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.464.4321 http://ruby.fgcu.edu/courses/twimberley/EnviroPhilo/Decadal.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://ruby.fgcu.edu/courses/twimberley/EnviroPhilo/Decadal.pdf text 2000 ftciteseerx 2016-01-08T06:49:16Z Abstract. Atmospheric and oceanic variability in the Arctic shows the existence of several oscillatory modes. The decadal-scale mode associated with the Arctic Oscillation (AO) and a low-frequency oscillation (LFO) with an approximate time scale of 60-80 years, dominate. Both modes were positive in the 1990s, signifying a prolonged phase of anomalously low at-mospheric sea level pressure and above normal surface air temperature in the central Arctic. Consistent with an enhanced cyclonic component, the arctic anticyclone was weakened and vorticity of winds became positive. The rapid reduction of arctic ice thickness in the 1990s may be one manifestation of the intense atmosphere and ice cyclonic circulation regime due to the synchronous actions of the AO and LFO. Our results suggest that the decadal AO and multidecadal LFO drive large amplitude natural variability in the Arctic making detection of possible long-term trends induced by greenhouse gas warming most difficult. Text Arctic Unknown Arctic |
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Abstract. Atmospheric and oceanic variability in the Arctic shows the existence of several oscillatory modes. The decadal-scale mode associated with the Arctic Oscillation (AO) and a low-frequency oscillation (LFO) with an approximate time scale of 60-80 years, dominate. Both modes were positive in the 1990s, signifying a prolonged phase of anomalously low at-mospheric sea level pressure and above normal surface air temperature in the central Arctic. Consistent with an enhanced cyclonic component, the arctic anticyclone was weakened and vorticity of winds became positive. The rapid reduction of arctic ice thickness in the 1990s may be one manifestation of the intense atmosphere and ice cyclonic circulation regime due to the synchronous actions of the AO and LFO. Our results suggest that the decadal AO and multidecadal LFO drive large amplitude natural variability in the Arctic making detection of possible long-term trends induced by greenhouse gas warming most difficult. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Igor V. Polyakov Mark A. Johnson |
spellingShingle |
Igor V. Polyakov Mark A. Johnson Arctic decadal and interdecadal variability |
author_facet |
Igor V. Polyakov Mark A. Johnson |
author_sort |
Igor V. Polyakov |
title |
Arctic decadal and interdecadal variability |
title_short |
Arctic decadal and interdecadal variability |
title_full |
Arctic decadal and interdecadal variability |
title_fullStr |
Arctic decadal and interdecadal variability |
title_full_unstemmed |
Arctic decadal and interdecadal variability |
title_sort |
arctic decadal and interdecadal variability |
publishDate |
2000 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.464.4321 http://ruby.fgcu.edu/courses/twimberley/EnviroPhilo/Decadal.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
http://ruby.fgcu.edu/courses/twimberley/EnviroPhilo/Decadal.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.464.4321 http://ruby.fgcu.edu/courses/twimberley/EnviroPhilo/Decadal.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766306043865858048 |