ON THE ROLE OF TROPOSPHERIC CIRCULATION IN RECENT CLIMATE CHANGES IN THE ANTARCTIC PENINSULA REGION

The state of tropospheric circulation in the West Antarctic sector (WAS) is considered during 1990s, the warmest decade in the Antarctic Peninsula (AP) region. Regional warming has progressed almost coherently with the second phase of global warming and is related to oceanic variability, specificall...

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Bibliographic Details
Main Author: Tymofeyev, Vladislav E.
Format: Article in Journal/Newspaper
Language:English
Published: Uniwersytet MikoĊ‚aja Kopernika w Toruniu 2009
Subjects:
regional warming
Antarctic Peninsula
predominant circulation type
criterion of similarity
Antarctic
The Antarctic
Antarc*
Online Access:https://apcz.umk.pl/BOGPGS/article/view/2292
Description
Summary:The state of tropospheric circulation in the West Antarctic sector (WAS) is considered during 1990s, the warmest decade in the Antarctic Peninsula (AP) region. Regional warming has progressed almost coherently with the second phase of global warming and is related to oceanic variability, specifically PDO-ENSO conditions. Atmospheric circulation in 1990s comprises a prevailing cyclogenesis west of the Antarctic Peninsula sector along with frequent weather modifications (the winter season in particular is examined) and the ridge of high pressure to the east. Predominant atmospheric circulation types for the recent decade are found to be stable in time causing smaller air temperature oscillations on different time scales. The circulation background responsible for the stabilization of air temperature growth in the AP region immediately after the turn of the millennium is shown.

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