| 横断山脉地区霜冻时空分布变化特征分析 |
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| 引用本文： | 王炳赟,;范广洲,;魏鸣,;华维,;赵衍斌.横断山脉地区霜冻时空分布变化特征分析[J].四川气象,2014(2):17-21. |
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| 作者姓名： | 王炳赟 ;范广洲 ;魏鸣 ;华维 ;赵衍斌 |
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| 作者单位： | [1]成都信息工程学院大气科学学院高原大气与环境四川省重点实验室,成都610225; [2]南京信息工程大学大气物理学院,南京210044; [3]南京信息工程大学气象灾害省部共建教育部重点实验室,南京210044 |
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| 基金项目： | 国家自然科学基金（4127507）、四川省科技厅青年基金（2012JQ0062）、成都信息工程学院科研资助项目（CRF201202）和高原大气与环境四川省重点实验室基金资助项目（PAEKL-2011-Y1） |
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| 摘 要： | 以小于等于0℃的地面气温作为霜冻的指标,利用1961～2007年横断山脉27个气象监测站逐日温度资料分析了横断山脉初、终霜期和无霜期的变化特征.结果表明,该地区平均初霜期以1.09d/10a气候倾向率推迟,终霜期以4.02d/10a的气候倾向率提早,无霜期以4.08d/10a的气候倾向率延长,存在较明显的地域差异.从年代际变化来看,自20世纪90年代开始,初霜冻日期20世纪90年代明显推迟,终霜冻日期明显提早,无霜冻期明显延长。
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| 关 键 词： | 霜冻 时空 特征分析 横断山脉 |
Frost Spatial and Temporal Variations Analysis in Hengduan Mountains |
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| Institution: | WANG Bingyun, FAN Guangzhou, WEI Ming , HUA Wei, ZHAO Yanbin, ( 1. College of Atmospheric Sciences, Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu University of Information Technology, Chengdu 610225, China 2. School of Atmospheric Physics, Nanfing University of Information Science ＆ Technology, Nanjing 210044, China 3. Key laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science ＆ Technology, Nanjing 210044, China) |
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| Abstract: | In this paper, using the climate diagnostic analysis method and surface temperature not more than 0 ℃ as a indicator of frost, the first frost date, the last frost date and frost - free period variations were analyzed, according to the minimum daily surface temperature data of 27 meteorological stations in Hengduan Mountains during 1961 - 2007. The results showed that the first frost date postponed by 1.09d/10a climate tendency rate, the last frost date ahead by 4.02d/10a, Frost -free period extended by 4.08d/10a, and there were obvious geographical differences in Hengduan Mountains. In most districts of Hengduan Mountains, the last frost dates＇ inter - annual differences were more than the first frost dates＇ , but the frost - free periods＇ inter - annual differences was the most. From the decadal changes, since the 1990s , the date of the first frost in the 1990s significantly delayed , the last frost date significantly ahead, and the frost -free period significantly longer than before. |
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| Keywords: | frost spatial and temporal variations analysis Hengduan Mountains |
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