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conferenceseries
.com
Volume 8, Issue 10 (Suppl)
J Earth Sci Clim Change, an open access
ISSN: 2157-7617
Climate Change 2017
October 19-21, 2017
CLIMATE CHANGE
October 19-21, 2017 | Rome, Italy
4
th
World Conference on
Impacts of four northern-hemisphere teleconnection patterns on atmospheric circulations over
Eurasia and the Pacific
Tao Gao, Jin-Yi Yu
and
Houk Paek
Inner Mongolia Meteorological Institute, CMA, China
T
he impacts of four teleconnection patterns on atmospheric circulation components over Eurasia and the Pacific region,
from low to high latitudes in the NorthernHemisphere (NH), were investigated comprehensively in this study.The patterns,
as identified by the Climate Prediction Center (USA), were the East Atlantic (EA), East Atlantic/Western Russia (EAWR),
Polar/Eurasia (POLEUR), and Scandinavian (SCAND) teleconnections. Results indicate that the EA pattern is closely related
to the intensity of the subtropical high over different sectors of the NH in all seasons, especially boreal winter. The wave train
associated with this pattern serves as an atmospheric bridge that transfers Atlantic influence into the low-latitude region of the
Pacific. In addition, the amplitudes of the EAWR, SCAND, and POLEUR patterns were found to have considerable control on
the ‘Vangengeim–Girs’ circulation that forms over the Atlantic–Eurasian region in winter or spring. The EA and EAWR mainly
affect the westerlies in winter and spring and the POLEUR and SCAND, respectively in summer and winter. Strong westerlies
confine the extension of the North Polar vortex, which generally results in a small weak vortex and a shallow East Asian trough
located in a position further east than normal. Furthermore, the North Polar vortex presents significant connections with the
patterns during winter and summer. Analyses in this work suggest that the teleconnection patterns in summer could be driven,
at least partly, by the Atlantic Multidecadal Oscillation, which to some degree might transmit the influence of the Atlantic
Ocean to Eurasia and the Pacific region.
Biography
Tao Gao is now working in the Meteorological Institute of Inner Mongolia, CMA and has her expertise in climate variations and regional climate prediction research
direction, especially in dust storm and drought studies for northern China and Inner Mongolia, China. She had visited the Institute of Meteorological and Physics,
Agricultural and Science University of Vienna, Austria, Climate Research Division, Science & Technology Branch, Environment Canada, and the Department of
Earth System Science, University of California, Irvine, USA as a visiting or a Senior Visiting Scholar supported by China Scholarship Council.
frautao@yahoo.comTao Gao et al., J Earth Sci Clim Change 2017, 8:10(Suppl)
DOI: 10.4172/2157-7617-C1-036