Climatic anomalous patterns associated with the Arctic and Polar cell strength variations

The Arctic cell as a reversed and closed loop next to the Polar cell has been recently revealed in the Northern Hemisphere (NH). In this paper, we study the interannual variability of the Arctic and Polar cell strengths during 1979-2012, and their influence on surface air temperature (SAT), precipit...

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Bibliographic Details
Published in:Climate Dynamics
Main Authors: Qian, Weihong, Wu, Kaijun, Leung, Jeremy Cheuk-Hin
Other Authors: Qian, WH (reprint author), Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing 100871, Peoples R China., Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing 100871, Peoples R China.
Format: Journal/Newspaper
Language:English
Published: CLIMATE DYNAMICS 2017
Subjects:
Arctic cell
Polar cell
Interannual variability
Surface air temperature
Precipitation
Sea-ice concentration
LOW-TEMPERATURE EVENTS
HADLEY CIRCULATION
REANALYSIS
SIGNALS
CHINA
Arctic
North Atlantic
North Atlantic oscillation
Sea ice
Online Access:https://hdl.handle.net/20.500.11897/476469
https://doi.org/10.1007/s00382-016-3067-x
Description
Summary:The Arctic cell as a reversed and closed loop next to the Polar cell has been recently revealed in the Northern Hemisphere (NH). In this paper, we study the interannual variability of the Arctic and Polar cell strengths during 1979-2012, and their influence on surface air temperature (SAT), precipitation, and sea-ice concentration (SIC) at mid- and high-latitudes of the NH. We show that there is a significant negative correlation between the Arctic and Polar cell strengths. Both the Arctic and Polar cell strengths can well indicate the recurring climatic anomalies of SAT, precipitation, and SIC in their extreme winters. The surface large-scale cold-warm and dry-wet anomalous patterns in these extreme winters are directly linked with the vertical structure of height and temperature anomalies in the troposphere. Results suggest that the past climatic anomalies are better indicated by the strength anomalies of the Polar and Arctic cells than the traditional indices of mid-high latitude pattern such as the Arctic Oscillation and North Atlantic Oscillation. This study illustrates a three-dimensional picture of atmospheric variable anomalies in the troposphere that result in surface climatic anomalies. National Natural Science Foundation of China [41375073]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA05090407]; Global Change and Air-Sea Interaction Program [GASI-03-02-01-02] SCI(E) ARTICLE 1-2 169-189 48

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