Twentieth century bipolar seesaw of the Arctic and Antarctic surface air temperatures

Article

Chylek, Petr, Folland, Chris K., Lesins, Glen and Dubey, Manvendra K.. 2010. "Twentieth century bipolar seesaw of the Arctic and Antarctic surface air temperatures." Geophysical Research Letters. 37 (8 (L08703)). https://doi.org/10.1029/2010GL042793
Article Title

Twentieth century bipolar seesaw of the Arctic and Antarctic surface air temperatures

ERA Journal ID1874
Article CategoryArticle
AuthorsChylek, Petr (Author), Folland, Chris K. (Author), Lesins, Glen (Author) and Dubey, Manvendra K. (Author)
Journal TitleGeophysical Research Letters
Journal Citation37 (8 (L08703))
Article NumberL08703
Number of Pages4
Year2010
PublisherJohn Wiley & Sons
Place of PublicationWashington DC, USA
ISSN0094-8276
1944-8007
Digital Object Identifier (DOI)https://doi.org/10.1029/2010GL042793
Web Address (URL)http://www.agu.org/journals/gl/gl1008/2010GL042793/
Abstract

Understanding the phase relationship between climate changes in the Arctic and Antarctic regions is essential for our understanding of the dynamics of the Earth's climate system. In this paper we show that the 20th century detrended Arctic and Antarctic temperatures vary in anti-phase seesaw pattern - when the Arctic warms the Antarctica cools and visa versa. This is the first time that a bi-polar seesaw pattern has been identified in the 20th century Arctic and Antarctic temperature records. The Arctic (Antarctic) detrended temperatures are highly correlated (anti-correlated) with the Atlantic Multi-decadal Oscillation (AMO) index suggesting the Atlantic Ocean as a possible link between the climate variability of the Arctic and Antarctic regions. Recent accelerated warming of the Arctic results from a positive reinforcement of the linear warming trend (due to an increasing concentration of greenhouse gases and other possible forcings) by the warming phase of the multidecadal climate variability (due to fluctuations of the Atlantic Ocean circulation).

KeywordsAntarctic regions; Antarctica; Atlantic Ocean; bipolar seesaw; climate variability; concentration of; Earth's climate; forcings; highly-correlated; phase relationships; surface air temperatures; twentieth century
ANZSRC Field of Research 2020370201. Climate change processes
370999. Physical geography and environmental geoscience not elsewhere classified
410102. Ecological impacts of climate change and ecological adaptation
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Byline AffiliationsLos Alamos National Laboratory, United States
Australian Centre for Sustainable Catchments
Dalhousie University, Canada
Institution of OriginUniversity of Southern Queensland
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