廣西近百年氣溫和降水序列的多時(shí)間尺度分析

氣候變化研究進(jìn)展 ?? 2007, Vol. 03 ?? Issue (06): 362-367.

廣西近百年氣溫和降水序列的多時(shí)間尺度分析

黃雪松況雪源覃崢嶸黃梅麗林開(kāi)平

廣西區(qū)氣候中心

收稿日期:2007-01-30 修回日期:2007-04-24 出版日期:2007-11-30 發(fā)布日期:2007-11-30
通訊作者: 黃雪松

Multi-Time-Scale Variations of Recent Centenary Series of Temperature and Precipitation in Guangxi of China

Received:2007-01-30 Revised:2007-04-24 Online:2007-11-30 Published:2007-11-30

摘要/Abstract

摘要： 對(duì)廣西近百年平均氣溫及降水量變化進(jìn)行了多時(shí)間尺度的層次結(jié)構(gòu)研究，并與Nino3區(qū)的海溫距平進(jìn)行奇異交叉譜分析。結(jié)果表明：平均氣溫有較強(qiáng)上升趨勢(shì)并伴有明顯的準(zhǔn)兩年周期振蕩；降水則呈下降趨勢(shì)，主要周期為32 a左右及準(zhǔn)兩年振蕩。1884至1910年代初，廣西處于干冷期；1910年代初至1930年前后，處于濕冷期；1930年前后至1950年代后期，處于濕暖期；1950年代后期至1990年代前期，處于干暖期。ENSO事件3~7 a的周期對(duì)廣西平均氣溫及降水影響顯著，赤道太平洋海溫變化對(duì)廣西氣溫的影響主要表現(xiàn)在年代際變化上，對(duì)降水的影響主要體現(xiàn)在年際變化上。

關(guān)鍵詞: 廣西, 近百年氣候變化, 小波分析, 奇異交叉譜分析

Abstract: Wavelet analysis was used in this paper to study the multi-time-scale structure of the temperature and precipitation series in Guangxi Zhuang Autonomous Region in the recent century, and the coupled characteristics between the sea surface temperature of Nino3 region and the two series mentioned above were diagnosed by using singular cross-spectrum analysis (SCSA). The results indicate that the ascending trend accompanied with the quasi-biennial oscillations dominated in the temperature variation while the precipitation showed a descending trend with the 32-year and quasi-biennial oscillations. Guangxi climate was characteristic of dry-cold from 1884 to the early 1910s, wet-cold from the early 1910s to around 1930, wet-warm from around 1930 to the late 1950s, and dry-warm from the late 1950s to the early 1990s. The 3-7-year oscillation component of ENSO exerted marked influence on Guangxi climate. The coupled variations of SST in the Nino3 region and Guangxi climate were reflected on the decadal scale for temperature and interannual scale for precipitation.

Key words: Guangxi, climate change in recent century, wavelet analysis, singular cross-spectrum analysis

中圖分類號(hào):

P423/P426

黃雪松況雪源覃崢嶸黃梅麗林開(kāi)平. 廣西近百年氣溫和降水序列的多時(shí)間尺度分析[J]. 氣候變化研究進(jìn)展, 2007, 03(06): 362-367.

. Multi-Time-Scale Variations of Recent Centenary Series of Temperature and Precipitation in Guangxi of China[J]. Climate Change Research, 2007, 03(06): 362-367.

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