The Arctic and Antarctic Oscillations and their Projected Changes Under Global Warming
Abstract. The Arctic Oscillation (AO) and the Antarctic Oscillation (AAO) are the leading modes of high-latitude variability in each hemisphere as characterized by the first EOF of mean sea-level pressure. Observations suggest a recent positive trend in the AO and it is speculated that this may be r...
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.324.3763 http://yly-mac.gps.caltech.edu/Climate/paps_StratosphericT copy/Fyfe1999_GRL.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.324.3763 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.324.3763 2023-05-15T13:43:30+02:00 The Arctic and Antarctic Oscillations and their Projected Changes Under Global Warming J. C. Fyfe G. J. Boer G. M. Flato The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.324.3763 http://yly-mac.gps.caltech.edu/Climate/paps_StratosphericT copy/Fyfe1999_GRL.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.324.3763 http://yly-mac.gps.caltech.edu/Climate/paps_StratosphericT copy/Fyfe1999_GRL.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://yly-mac.gps.caltech.edu/Climate/paps_StratosphericT copy/Fyfe1999_GRL.pdf 1998 Thompson and Wallace Annular Modes in the text ftciteseerx 2016-09-04T00:26:35Z Abstract. The Arctic Oscillation (AO) and the Antarctic Oscillation (AAO) are the leading modes of high-latitude variability in each hemisphere as characterized by the first EOF of mean sea-level pressure. Observations suggest a recent positive trend in the AO and it is speculated that this may be related to global warming. The CCCma coupled general circulation model control simulation exhibits a robust and realistic AO and AAO. Climate change simulations for the period 1900-2100, with forcing due to greenhouse gases and aerosols, exhibit positive trends in both the AO and the AAO. The model simulates essentially unchanged AO/AAO variations superimposed on a forced climate change pattern. The results do not suggest that a simulated trend in the AO/AAO necessarily depends on stratospheric involvement nor that forced climate change will be expressed as a change in the occurence of one phase of the AO/AAO over another. This pattern of climate change projects exclusively on the AAO pattern in the southern hemisphere but not in the northern hemisphere where other EOFs are involved. The extent to which this forced climate change pattern and the unforced modes of variation are determined by the same mechanisms and feedbacks remains an open question. 1. Text Antarc* Antarctic Arctic Climate change Global warming Unknown Antarctic Arctic The Antarctic |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
1998 Thompson and Wallace Annular Modes in the |
spellingShingle |
1998 Thompson and Wallace Annular Modes in the J. C. Fyfe G. J. Boer G. M. Flato The Arctic and Antarctic Oscillations and their Projected Changes Under Global Warming |
topic_facet |
1998 Thompson and Wallace Annular Modes in the |
description |
Abstract. The Arctic Oscillation (AO) and the Antarctic Oscillation (AAO) are the leading modes of high-latitude variability in each hemisphere as characterized by the first EOF of mean sea-level pressure. Observations suggest a recent positive trend in the AO and it is speculated that this may be related to global warming. The CCCma coupled general circulation model control simulation exhibits a robust and realistic AO and AAO. Climate change simulations for the period 1900-2100, with forcing due to greenhouse gases and aerosols, exhibit positive trends in both the AO and the AAO. The model simulates essentially unchanged AO/AAO variations superimposed on a forced climate change pattern. The results do not suggest that a simulated trend in the AO/AAO necessarily depends on stratospheric involvement nor that forced climate change will be expressed as a change in the occurence of one phase of the AO/AAO over another. This pattern of climate change projects exclusively on the AAO pattern in the southern hemisphere but not in the northern hemisphere where other EOFs are involved. The extent to which this forced climate change pattern and the unforced modes of variation are determined by the same mechanisms and feedbacks remains an open question. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
J. C. Fyfe G. J. Boer G. M. Flato |
author_facet |
J. C. Fyfe G. J. Boer G. M. Flato |
author_sort |
J. C. Fyfe |
title |
The Arctic and Antarctic Oscillations and their Projected Changes Under Global Warming |
title_short |
The Arctic and Antarctic Oscillations and their Projected Changes Under Global Warming |
title_full |
The Arctic and Antarctic Oscillations and their Projected Changes Under Global Warming |
title_fullStr |
The Arctic and Antarctic Oscillations and their Projected Changes Under Global Warming |
title_full_unstemmed |
The Arctic and Antarctic Oscillations and their Projected Changes Under Global Warming |
title_sort |
arctic and antarctic oscillations and their projected changes under global warming |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.324.3763 http://yly-mac.gps.caltech.edu/Climate/paps_StratosphericT copy/Fyfe1999_GRL.pdf |
geographic |
Antarctic Arctic The Antarctic |
geographic_facet |
Antarctic Arctic The Antarctic |
genre |
Antarc* Antarctic Arctic Climate change Global warming |
genre_facet |
Antarc* Antarctic Arctic Climate change Global warming |
op_source |
http://yly-mac.gps.caltech.edu/Climate/paps_StratosphericT copy/Fyfe1999_GRL.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.324.3763 http://yly-mac.gps.caltech.edu/Climate/paps_StratosphericT copy/Fyfe1999_GRL.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766189775681748992 |