论文

贵州省冬季气温的时空特征及其与海气的关系

  • 严小冬 ,
  • 宋燕 ,
  • 黄晨然 ,
  • 杨春艳 ,
  • 夏阳
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  • 贵州省气候中心, 贵阳 550002;中国气象局干部培训学院, 北京 100081;六盘水市气象局, 六盘水 553001

收稿日期: 2016-09-06

  网络出版日期: 2017-10-28

基金资助

国家自然科学基金项目(41575091);国家重大科学研究计划项目(2012CB957803);中国清洁发展机制基金赠款项目(2013031);黔科合院士站(20144010);黔科合SY字(20113091)

Temporal and Spatial Characteristics of Winter Temperature in Guizhou and Its Relationships with Ocean and Atmosphere

  • YAN Xiaodong ,
  • SONG Yan ,
  • HUANG Chenran ,
  • YANG Chunyan ,
  • XIA Yang
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  • Guizhou Climate Center, Guiyang 550002, China;China Meteorological Administration Training Centre, Beijing 100081, China;Liu Panshui Meteorological Bureau, Liu Panshui 553001, China

Received date: 2016-09-06

  Online published: 2017-10-28

摘要

利用1962-2014年贵州39个代表站的冬季(12月至次年2月)温度资料和北半球500 hPa高度场及全球海温资料,通过合成分析、相关分析和小波分析等方法,对贵州冬季气温的时空特征及其与北半球500 hPa高度场、全球海温场的关系进行了研究。结果表明,近53年来,贵州冬季平均气温约为6.3℃,整体呈升温趋势,在贵州省东北部和西南部边缘最为显著;贵州冬季气温以准7年和准12年的振荡周期为主;贵州冬季气温突变于1988年,突变前贵州冷冬明显,突变后暖冬明显。异常暖冬年,格陵兰、北美和中太平洋地区的500 hPa高度场呈正距平,其余地区均为负距平,欧亚大陆的位势高度距平呈现为经向的"正-负-正"分布;异常冷冬年,在中西伯利亚地区、西欧-北大西洋和北美高度场表现为明显的正距平,其余地区均为负距平,在东半球,位势高度距平从西到东、从北到南都表现出"负-正-负"的分布形势。贵州冬季气温与前期秋季东北太平洋、赤道东太平洋和东印度洋区域的海温有显著的相关关系。异常暖冬年前期秋季,北太平洋(尤其是西北太平洋)和中印度洋(最显著)的海温距平异常显著;异常冷冬年前期秋季,北半球中东太平洋(最显著)和中印度洋的海温距平异常显著。同时,异常冷暖冬年的海温距平差值中心集中在东北太平洋和南半球中印度洋海域。

本文引用格式

严小冬 , 宋燕 , 黄晨然 , 杨春艳 , 夏阳 . 贵州省冬季气温的时空特征及其与海气的关系[J]. 高原气象, 2017 , 36(5) : 1336 -1345 . DOI: 10.7522/j.issn.1000-0534.2016.00122

Abstract

Using winter monthly mean temperature data of 39 representative stations in Guizhou from 1962 to 2014, 500 hPa height field data in the Northern Hemisphere and global sea surface temperature (SST) data, temporal and spatial characteristics of winter temperature and their relationships with the 500 hPa height field in the Northern Hemisphere and the global SST field were analyzed by composite analysis, correlation analysis, wavelet analysis and so on.The results show that the winter temperature is about 6.3℃ in Guizhou for recent 53 years, and it appears to be warming up, especially in the northeastern and southwestern edge of the province.The winter temperature is dominated by quasi 7 year and quasi 12 year oscillation.The winter temperature changes suddenly in 1988.The winters are obviously cold before the mutation and warm after the mutation.In abnormal warm winter years, the 500 hPa height anomaly fields are positive at the Greenland, the North American and the middle Pacific, while the rest of regions are negative.The potential height deviation of Eurasia continent is presented as "positive-negative-positive".In abnormal cold winter years, the 500 hPa height fields are positive at the central Siberia region, Western Europe-North Atlantic and the North American, while the rest of regions are negative.In the Eastern Hemisphere, the potential height deviation is presented as "negative-positive-negative" both from west to east and from north to south.The correlation between the winter temperature in Guizhou and the SST in the northeastern Pacific, equatorial eastern Pacific Ocean and the eastern India Ocean in the early autumn is very significant.In the autumn before abnormal warm winter, the sea surface temperature anomaly (SSTA) of the North Pacific (especially the Northwest of Pacific) and the central India Ocean (most significantly) is remarkable.In the autumn before abnormal cold winter, the SSTA of the East and Middle Pacific in the Northern Hemisphere (most significantly) and the Middle India Ocean is obvious.Meanwhile, the SSTA difference center in the anomalous cold and warm winter years is concentrated in the Northeast Pacific and the Middle India Ocean in the Southern Hemisphere.

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