The Climatic Variety and Anomaly of the Winter Mean Air Temperature of the East Monsoon Area in China

Chen Shaoyong; Guo Zhongxiang; Gao Rong; Han Tong

Vol.20, NO.4, 2009

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2009 > 20(4): 478-485

Chen Shaoyong, Guo Zhongxiang, Gao Rong, et al. The climatic variety and anomaly of the winter mean air temperature of the east monsoon area in China. J Appl Meteor Sci, 2009, 20(4): 478-485.

Citation:

Chen Shaoyong, Guo Zhongxiang, Gao Rong, et al. The climatic variety and anomaly of the winter mean air temperature of the east monsoon area in China. J Appl Meteor Sci, 2009, 20(4): 478-485.

Chen Shaoyong, Guo Zhongxiang, Gao Rong, et al. The climatic variety and anomaly of the winter mean air temperature of the east monsoon area in China. J Appl Meteor Sci, 2009, 20(4): 478-485.

Citation:

Chen Shaoyong, Guo Zhongxiang, Gao Rong, et al. The climatic variety and anomaly of the winter mean air temperature of the east monsoon area in China. J Appl Meteor Sci, 2009, 20(4): 478-485.

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The Climatic Variety and Anomaly of the Winter Mean Air Temperature of the East Monsoon Area in China

1.
Institute of Arid Meteorology, Key laboratory of Arid Climatic Changing and Reducing Disaster of Gansu, Key laboratory of Arid Climatic Changing and Reducing Disaster of CMA, Lanzhou 730020
2.
Meteorological Bureau of Baiyin, Baiyin 730900

Received Date: 2008-12-10
Rev Recd Date: 2009-05-11
Publish Date: 2009-08-31

Abstract

Abstract

Spatial anomaly features and time evolution rule of the winter mean air temperature in China' s east monsoon area are analyzed using data from 375 stations over the years of 1961-2006, adopting the methods of linear regression analysis, multinomial fitting, EOF, REOF, Mann-Kendall, Glide t-examination, Wavelet analysis and power spectrum analysis etc.The incalescence rate is 0.39 ℃/10 a in the recent 46 years, and the annual maxim incalescence occurs in February. The air temperature has taken on an increment trend since 1971. There is a remarkable mutation in 1987 and from then the air temperature reached to a more remarkable warmer period, then the temperature slightly dropped at the beginning of this century. The stability of winter temperature to the north of yellow river is higher than the south. The change of air temperature in most of the regions takes on an obvious uptrend. The incalescence rate increased from south to north. The areas where the getting-warmer trend is inconspicuous are mainly to the south of monsoon area. Using the EOF method analysis, the abnormity of winter mean air temperature in monsoon area of east of China is divided into two common distributive modes: The all area unanimous model and the quasi north and south difference model. Using the REOF method analysis, the area can be divided into 3 sub-areas: The south, the middle and the north monsoon areas. Temperature of the monsoon area is mainly of the all area unanimous model. In the whole areas, 80% of the top-ten warmer years are later than 1990. The exceptional change of air temperature is periodical with a cycle of about 5 years and a cycle of 22 years. Air temperature has turned in to rise in the early years of 1970s in each area, and there is a generally remarkable mutation during 1986-1987.
- monsoon area in China;
- winter mean air temperature;
- climatic warming

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References(35)

Figures and Tables

图 1 我国东部季风区冬季气温空间分布 (a) 以及年际变化 (b) 和M-K检验曲线图 (c)

(c中A, B为显著水平α=0.05的临界值)

Fig. 1 Spatial distribution (a) and interannual variation (b) and M-K examination curve chart (c) of the winter mean air temperature of the east monsoon area in China

(A, B for marginal value in Fig. c)

DownLoad: Full-Size Img PowerPoint

图 2 我国东部季风区冬季气温长期变化线性趋势空间分布图 (a) 增温率, (b) 增温显著性

Fig. 2 The spatial distribution of linear trend of long-term variation of the winter mean air temperature of the east monsoon area in China (a) the incalescence rate, (b) remarkably incalescence areas

DownLoad: Full-Size Img PowerPoint

图 3 我国东部季风区冬季气温EOF分析的前2个特征向量 (a~b) 及其对应的时间系数 (c~d) 和小波分析 (e~f)

(a, b中阴影部分表示LV值大于0.6的区域)

Fig. 3 The first 2 characteristic vectors (a-b) of the EOF analysis and their corresponding time coefficients (c-d) with MHAT wavelet analysis (e-f) of the annual mean air temperature of the east monsoon area in China

(shaded part means areas which the value of LV > 0.6 in Fig. a and b)

DownLoad: Full-Size Img PowerPoint

图 4 我国东部季风区冬季气温REOF分析的前3个特征向量 (a~c) 及气候分区 (d)

(阴影部分表示RLV值大于0.6的区域)

Fig. 4 The first 3 characteristic vectors (a-c) and the three climatic sub-areas (d) of the REOF analysis of the winter mean air temperature of the east monsoon in China

(shaded part means areas with value of RLV > 0.6)

DownLoad: Full-Size Img PowerPoint

图 5 我国东部季风区3个分区冬季气温时间演变

Fig. 5 The interannual departure variation of winter mean air temperature of three climatic sub-areas of the east monsoon in China

DownLoad: Full-Size Img PowerPoint

表 1 我国东部季风区冬季气温EOF及REOF分析各分量的方差贡献率 (单位:%)

Table 1 The variance contribution ratio of the principal components of EOF and REOF analysis on the annual mean air temperature of the east monsoon area in China (unit:%)

表 2 我国季风区各分区气温明显异常的年份

Table 2 Years which winter mean air temperature are obviously abnormal in each sub-areas of the east monsoon area in China

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