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投稿时间：2017-04-11 修订日期：2018-08-22
投稿时间：2017-04-11 修订日期：2018-08-22
中文摘要: 本文采用惩罚最大T检验（PMT）方法，结合台站历史沿革信息，对东北地区129个气象站月最高气温和最低气温资料进行均一性检验和订正，并与已有均一化数据集（CHHT）进行对比分析。结果表明：气温的非均一性在空间上普遍存在，最高温和最低温分别检测出断点74个和94个，资料拼接和迁站是造成非均一性的重要因素。均一性检验和订正提高了东北地区最高气温和最低气温的空间一致性，线性趋势空间分布更加合理，订正之后变化趋势略有增加，年平均最高气温和最低气温分别由0.1和0.22℃·(10 a)-1增至0.17和0.33℃·(10 a)-1。与CHHT相比，两套数据时间相关系数在0.9以上，对东北地区气候长期演变趋势基本一致，东北地区年平均最高气温和最低气温均呈显著升温趋势，采用PMT得到的年平均最高气温和最低气温变化趋势较CHHT分别偏高0.05和0.03℃·(10 a)-1，在线性趋势空间分布上PMT均一化检验订正结果较CHHT略有改善。
中文关键词: 东北地区，气温，均一性检验和订正，PMT
Abstract:Based on the obversation data and detailed metadata archive recorded by 129 meteorological stations in the northeast of China, the homogeneity test and corrections are carried out to the monthly maximum and minimum temperatures by using the penalized maximum T test (PMT), and the corrections have been compared to the previous study (CHHT). The results show that the discontinuities of monthly temperature are prevalent which are mainly caused by data joint from different resoures and station relocation. There are 74 and 94 breakpoints detected respectively from monthly maximum and minimum temperatures. The spatial consistency of the monthly maximum and minimum temperatures has been improved and the spatial distribution of long term trends is more reasonable after data homogenization. The trends of annual maximum and minimum temperatures have respectively increased from 0.1℃·(10 a)-1 and 0.22℃·(10 a)-1 to 0.17℃·(10 a)-1 and 0.33℃·(10 a)-1. Compared to the CHHT, temporal correlation coefficient between PMT and CHHT is above 0.9, reflecting the consistent climate warming. The spatial distribution of long term trends is slightly improved and the trends of annual maximum and minimum tempe rature calculated by PMT are 0.05℃·(10 a)-1 and 0.03℃·(10 a)-1 warmer than those by CHHT.
keywords: Northeast China, monthly temperature, homogeneity and test, PMT（penalized maximum T test）
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基金项目:中国气象局气候变化专项(CCSF201819，CCSF201841)、辽宁省气象局科研项目(201810)和辽宁省气象局“气候变化创新团队”共同资助
| 作者 | 单位 |
| 崔妍 | 沈阳区域气候中心，沈阳 110166 |
| 徐文慧 | 国家气象信息中心，北京 100081 |
| 李庆祥 | 中山大学大气科学学院，珠海 519082 |
| 赵春雨 | 沈阳区域气候中心，沈阳 110166 |
| 周晓宇 | 沈阳区域气候中心，沈阳 110166 |
| 敖雪 | 沈阳区域气候中心，沈阳 110166 |
| 余君 | 重庆市气象局，重庆 401147 |
引用文本：
崔妍,徐文慧,李庆祥,赵春雨,周晓宇,敖雪,余君,2019.东北地区月气温序列的均一性检验和订正[J].气象,45(2):240-250.
CUI Yan,XU Wenhui,LI Qingxiang,ZHAO Chunyu,ZHOU Xiaoyu,AO Xue,YU Jun,2019.Homogeneity Test and Correction of Monthly Temperature in Northeast China[J].Meteor Mon,45(2):240-250.
崔妍,徐文慧,李庆祥,赵春雨,周晓宇,敖雪,余君,2019.东北地区月气温序列的均一性检验和订正[J].气象,45(2):240-250.
CUI Yan,XU Wenhui,LI Qingxiang,ZHAO Chunyu,ZHOU Xiaoyu,AO Xue,YU Jun,2019.Homogeneity Test and Correction of Monthly Temperature in Northeast China[J].Meteor Mon,45(2):240-250.
