违反了 PRIMARY KEY 约束 'PK_t_counter'。不能在对象 'dbo.t_counter' 中插入重复键。 语句已终止。 青藏高原两类对流层顶频率的季节分布特征及其与同纬度地区的差异-Seasonal Variations of Occurrence Frequencies of Two Types of Tropopause over the Tibetan Plateau and Their Differences from Those in the Same Latitudes
doi:  10.3878/j.issn.1006-9585.2017.16153
青藏高原两类对流层顶频率的季节分布特征及其与同纬度地区的差异

Seasonal Variations of Occurrence Frequencies of Two Types of Tropopause over the Tibetan Plateau and Their Differences from Those in the Same Latitudes
摘要点击 266  全文点击 688  投稿时间:2016-08-08  
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基金:  国家重点基础研究发展计划项目2012CB9552003,国家自然科学基金项目41405070、41275095、41675039、91537213、41641042
中文关键词:  青藏高原  热带对流层顶  极地对流层顶  频率  季节变化  高空温度
英文关键词:  Tibetan Plateau  Tropical tropopause  Polar tropopause  Occurrence frequency  Seasonal variation  Upper air temperature
              
作者中文名作者英文名单位
秦亚兰QIN Yalan南京信息工程大学气象灾害教育部重点实验室/气象灾害预报预警与评估协同创新中心/气候与环境变化国际合作联合实验室, 南京 210044
周顺武ZHOU Shunwu南京信息工程大学气象灾害教育部重点实验室/气象灾害预报预警与评估协同创新中心/气候与环境变化国际合作联合实验室, 南京 210044
张人禾ZHANG Renhe中国气象科学研究院灾害天气国家重点实验室, 北京 100081
杨双艳YANG Shuangyan南京信息工程大学气象灾害教育部重点实验室/气象灾害预报预警与评估协同创新中心/气候与环境变化国际合作联合实验室, 南京 210044
闫梓宇YAN Ziyu南京信息工程大学气象灾害教育部重点实验室/气象灾害预报预警与评估协同创新中心/气候与环境变化国际合作联合实验室, 南京 210044
引用:秦亚兰,周顺武,张人禾,杨双艳,闫梓宇.2017.青藏高原两类对流层顶频率的季节分布特征及其与同纬度地区的差异[J].气候与环境研究,22(4):509-518,doi:10.3878/j.issn.1006-9585.2017.16153.
Citation:QIN Yalan,ZHOU Shunwu,ZHANG Renhe,YANG Shuangyan,YAN Ziyu.2017.Seasonal Variations of Occurrence Frequencies of Two Types of Tropopause over the Tibetan Plateau and Their Differences from Those in the Same Latitudes[J].Climatic and Environmental Research(in Chinese),22(4):509-518,doi:10.3878/j.issn.1006-9585.2017.16153.
中文摘要:
      基于1979~2014年ERA-Interim逐日再分析温度资料,依据温度递减率插值法,计算出北半球两类对流层顶(热带对流层顶和极地对流层顶)频率数据。对比分析了青藏高原与同纬度地区两类对流层顶频率在季节变化上的差异,并讨论了青藏高原两类对流层顶频率分布与高空温度的关系。结果表明:1)依据温度递减率插值法计算出的再分析两类对流层顶频率可以反映青藏高原两类对流层顶频率季节变化特征:热带对流层顶全年频率高,冷、暖季节差异不明显;极地对流层顶盛夏频率极低,冷、暖季节差异明显。与极地对流层顶频率相比,青藏高原热带对流层顶频率的可信度更高。2)青藏高原和同纬度地区热带(极地)对流层顶频率在暖季增加(减少),在冷季减少(增加)。相比同纬度地区,青藏高原热带(极地)对流层顶频率在冬季偏少(多),其他季节偏多(少)。青藏高原两类对流层顶频率等值线的梯度更大,表明青藏高原对流层顶更易断裂。3)青藏高原两类对流层顶频率与高空温度关系密切。青藏高原对流层中上层(平流层下部)温度升高(降低),有利于青藏高原热带对流层顶频率增加,极地对流层顶频率减少,反之亦然。
Abstract:
      Using daily temperature extracted from the ERA-Interim reanalysis data during 1979-2014 and the temperature lapse rate interpolation method, the occurrence frequencies of two types of tropopause (the tropical tropopause and the polar tropopause) in the Northern Hemisphere are calculated. Seasonal variations of the occurrence frequencies of the two types of tropopause over the Tibetan Plateau and their differences to that in the same latitudes are demonstrated and discussed first. The relationships between the occurrence frequencies of the two types of tropopause and upper air temperature over the Tibetan Plateau are explored. The results are as follows:1) The occurrence frequencies of the two types of tropopause calculated using the reanalysis data and temperature lapse rate interpolation method are consistent with their climatological variations observed over the Tibetan Plateau. Differences in the tropical tropopause occurrence frequency between cold and warm seasons are insignificant with high frequency all year round. However, differences in the polar tropopause occurrence frequency between cold and warm seasons are obvious with very low occurrence frequency in July and August. The tropical tropopause occurrence frequency derived from the ERA-Interim reanalysis dataset is more reliable than the polar tropopause frequency. 2) During warm (cold) season, the tropical tropopause occurrence frequency increases (decreases), while the seasonal variation of the polar tropopause occurrence frequency is opposite. Compared with that in the same latitudes, the tropical (polar) tropopause occurrence frequency is less (more) frequent in winter but more (less) frequent in other seasons. The gradients in the occurrence frequencies of the two types of tropopause over the Tibetan Plateau are more distinct, indicating that the tropopause over the Tibetan Plateau is more likely to break. 3) The seasonal and interannual variations of the occurrence frequencies of the two types of tropopause are closely linked with temperature over the Tibetan Plateau. When the temperature in the upper troposphere (in the lower stratosphere) over the Tibetan Plateau increases (decreases), the tropical tropopause occurrence frequency increases and the polar tropopause occurrence frequency decreases accordingly, and vice versa.
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