Impacts of Polar Vortex, NPO, and SST Configurations  on Unusually Cool Summers in Northeast China.  Part I: Analysis and Diagnosis

LIAN Yi; SHEN Baizhu; LI Shangfeng; ZHAO Bin; GAO Zongting; LIU Gang; LIU Ping; CAO Ling

doi:10.1007/s00376-012-1258-x

Volume 30 Issue 1

Jan. 2013

Article Contents

Article > ADVANCES IN ATMOSPHERIC SCIENCES > 2013 > 30(1): 193-209

Impacts of Polar Vortex, NPO, and SST Configurations on Unusually Cool Summers in Northeast China. Part I: Analysis and Diagnosis

1.
Laboratory of Research for Middle--High Latitude Circulation Systems and East Asian Monsoon, Changchun 130062, Institute of Meteorological Sciences of Jilin Province, Changchun 130062;Laboratory of Research for Middle--High Latitude Circulation Systems and East Asian Monsoon, Changchun 130062, Institute of Meteorological Sciences of Jilin Province, Changchun 130062;Laboratory of Research for Middle--High Latitude Circulation Systems and East Asian Monsoon, Changchun 130062, Institute of Meteorological Sciences of Jilin Province, Changchun 130062;National Meteorological Center, Beijing 100081;Laboratory of Research for Middle--High Latitude Circulation Systems and East Asian Monsoon, Changchun 130062, Institute of Meteorological Sciences of Jilin Province, Changchun 130062;Laboratory of Research for Middle--High Latitude Circulation Systems and East Asian Monsoon, Changchun 130062, Jilin Meteorological Science and Technology Service Center, Changchun 130062;Laboratory of Research for Middle--High Latitude Circulation Systems and East Asian Monsoon, Changchun 130062, Jilin Meteorological Science and Technology Service Center, Changchun 130062, Center of Weather Film in Jilin Province, Changchun 130062;Center of Weather Film in Jilin Province, Changchun 130062

doi: 10.1007/s00376-012-1258-x

Abstract
References
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Abstract:
This study unveils the evolution of two major early signals in the North Pacific atmosphere--ocean system that heralded abnormal high-pressure blockings and cold-vortex activities across Northeast China, based on an analysis of the configurations of major modes including the polar vortex, the North Pacific Oscillation (NPO), and SST in the preceding winter and spring and atmospheric low-frequency disturbances in Northeast China. We analyzed these aspects to understand the atmosphere--ocean physical coupling processes characterized by the two early signals, and here we explain the possible mechanisms through which dipole circulation anomalies affect the summer low-temperature processes in Northeast China. We further analyzed the interdecadal variation background and associated physical processes of the two early signals.
- polar vortex,
- NPO,
- North Pacific SST,
- atmosphere--ocean coupling,
- summer low temperatures in Northeast China,
- dipole pattern
References

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