SCIENTIA GEOGRAPHICA SINICA ›› 2013, Vol. 33 ›› Issue (7): 844-850.doi: 10.13249/j.cnki.sgs.2013.07.844

• Orginal Article • Previous Articles     Next Articles

The Comparison of Factors on Interannual and Interdecadal Variations of the Winter Temperature in Northeast China

Yi-he FANG1(), Fang ZHOU2, Yun-fu ZHANG1, Zi-qi ZHAO3, Qiu-yu SHEN4, Yi-shu WANG5, Chun-xue WANG6   

  1. 1.Regional Climate Center of Shenyang, Shenyang, Liaoning 110016, China
    2. Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science &Technology, Nanjing, Jiangsu 210044, China
    3. Institute of Atmospheric Environment, China Meteorological Administration, Shenyang, Liaoning 110016, China
    4. Liaoning Provincial Meteorological Bureau, Shenyang, Liaoning 110015, China
    5. Yixian Meteorological Station of Jinzhou, Jinzhou, Liaoning, 121100, China
    6. Climate Center of Sichuan, Chengdu, Sichuan 610000, China
  • Received:2013-01-04 Revised:2013-02-11 Online:2013-07-20 Published:2013-07-20

Abstract:

Based on the monthly mean temperature data of 53 observational stations in the three provinces of northeast China in 1961-2012 and NCEP/NCAR monthly mean reanalysis data of 500 hPa geopotential height, 500 hPa wind velocity field, and sea level pressure filed, the variation characteristics of winter temperature in the northeast China at both interannual and interdecadal time scales were analyzed. By using the Singular Value Decomposition technology, we find three main influential factors of winter temperature in the northeast China. The independent effects of different influential factors on winter temperature in the northeast China were studied by using partial correlation analysis method at both interannual and interdecadal scales. Results show that: Both at inter-annual and interdecadal scales’ variations, the first mode’s spatial vector of EOF analysis on winter temperature in the northeast China show a consistent variation characteristic all over northeast China, and the first mode’s time coefficient exists a significant growing trend. In addition, the Singular Value Decomposition technology’s consequence show that, in the atmospheric shell, the Arctic Oscillation, the Siberian high and the East Asian winter monsoon have close relationship with the winter temperature in the northeast China. So they are the three main influential factors on winter temperature in the northeast China. Partial correlation analysis method’s result tell us that, at interannual scale’s variations, the Arctic Oscillation and the East Asian winter monsoon have close relationship with the winter temperature in the central part and northern part of northeast China. So the Arctic Oscillation and the East Asian winter monsoon may be more suitable for describing the winter temperature in central part and northern part of northeast China. The Siberian high may be more suitable for describing the winter temperature in southern part of northeast China. But at interdecadal scale’s variations, the relationship between East Asian winter monsoon and the winter temperature in the northeast China is not intimate. Similarly, the Siberian high is not suitable for describing the winter temperature in the northeast China. It is found that, only the Arctic Oscillation may be more suitable for describing the winter temperature in northeast China.

Key words: northeast China, winter temperature, interannual, interdecadal, partial correlation coefficient

CLC Number: 

  • P423