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当前位置: 首页 > 文章 > 气候变暖背景下称多县近54年气候变化特征分析 青海草业 2015,24 (4) 21-27
Position: Home > Articles > ANALYSIS OF CLIMATE VARIATIONS DURING THE PAST 54 YEARS UNDER GLOBAL WARMING IN CHENGDUO COUNTY Qinghai Prataculture 2015,24 (4) 21-27

气候变暖背景下称多县近54年气候变化特征分析

作  者：
铁吉新;赵全宁;马林
单  位：
青海省称多县气象局
关键词：
称多县;气温;降水;线性回归;Mann-Kendall检验;小波分析
摘  要：
依据称多县1961~2014年的逐月气温和降水资料,分析了称多县积雪期(上年10月~当年5月)、汛期(当年6月~9月)和年平均气温和降水的变化特征。结果表明:1)称多县近54a年平均、积雪期和汛期气温均呈上升趋势,进入21世纪后上升趋势显著;年平均气温在1969年发生突变,积雪期和汛期气温冷暖突变均发生在21世纪初;年平均气温存在18a尺度的年代际振荡和7a、3a尺度的年际振荡,积雪期气温存在20a尺度的年代际振荡和准5a、9a尺度的年际振荡,汛期气温存在19a尺度的年代际振荡和准10a、4a尺度的年际振荡。2)年、积雪期和汛期降水量也均呈现上升趋势;年降水量和积雪期降水量突变均发生在上世纪90年代初,汛期降水量在2006年发生突变;年降水量存在准12a和准6a尺度的周期振荡,积雪期降水量存在准18a、13a和8a尺度的周期振荡,汛期降水量存在准11a和准6a的周期振荡。
译  名：
ANALYSIS OF CLIMATE VARIATIONS DURING THE PAST 54 YEARS UNDER GLOBAL WARMING IN CHENGDUO COUNTY
作  者：
TIE Ji-xin;Chengduo Meteorological Service;
关键词：
Chengduocounty;;Temperature;;Precipitation;;linear regression;;Mann-Kendall test;;wavelet analysis
摘  要：
According to the monthly air temperature and precipitation data from 1961- 2015,The variations of temperature and precipitationare analyzed in the snow period( from last October to this May),in the flood( from June to September) and annual mean. The results show that: 1) the annual mean,the snow period and the flood temperature and precipitation of Chengduocounty presented the upward trend during the past 54 years and upward more obviously in the 21 st century. The annual mean temperature mutation occurred in the 1969,the snow period and the flood temperature mutation all occurred in the early 2000 s. Annual mean temperature vary with decadal period of 18 a scale and inter- annual periods of quasi- 7a,quasi- 4a scale,snow period temperature vary with decadal period of 20 a scale and inter- annual periods of quasi- 5a,quasi- 9a scale,and flood temperature vary with decadal period of 19 a scale and inter- annual periods of quasi- 10 a,quasi-4a scale. 2) the annual mean,the snow period and the flood precipitation presented the upward trend during the past 54 years. The annual mean and snow period precipitation mutation all occurred in the early 1990 s,the flood temperature mutation occurred in 2006. Annual mean precipitation vary with inter- annual periods of quasi- 12 a,quasi- 6a scale,snow period precipitation vary with inter- annual periods of quasi- 18 a,quasi- 13 a and quasi- 8a scale,and flood temperature vary with inter- annual periods of quasi- 11 a,quasi- 6a scale.

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