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分布特征及其与同纬度地区的差异*-Seasonal Variation of Two Types of Tropopause Frequency over the Tibetan Plateau and the Differences from the Regions 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分布特征及其与同纬度地区的差异*

Seasonal Variation of Two Types of Tropopause Frequency over the Tibetan Plateau and the Differences from the Regions in the Same Latitudes
摘要点击 372  全文点击 111  投稿时间:2016-08-08  最后修改时间:2017-04-10
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基金:  (41405070,41275095)
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:  The Tibetan Plateau, The tropical tropopause, The polar tropopause, Frequency, Seasonal variation, Upper air temperature
              
作者中文名作者英文名单位
秦亚兰qinyalan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
周顺武zhoushunwu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
张人禾zhangrenhe中国气象科学研究院灾害天气国家重点实验室
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
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
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分布特征及其与同纬度地区的差异*[J].气候与环境研究
Citation:qinyalan,zhoushunwu,zhangrenhe,Yang Shuangyan,Yan Ziyu.2017.Seasonal Variation of Two Types of Tropopause Frequency over the Tibetan Plateau and the Differences from the Regions in the Same Latitudes[J].Climatic and Environmental Research(in Chinese)
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(简称高原)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,高原热带对流层顶频率的可信度更高。2) 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,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)。高原两类对流层顶频率等值线的梯度更大,表明高原对流层顶更易断裂。3) 高原两类对流层顶频率与高空温度关系密切。高原对流层中上层(平流层下部)温度升高(降低),有利于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:
      Based on daily temperature dataset from ERA-Interim analysis during 1979-2014 and according to the temperature lapse rate interpolation method, two types of tropopause (the tropical tropopause and the polar tropopause) frequency in the North Hemisphere are calculated. The seasonal variations of two types of tropopause frequency over the Tibetan Plateau (plateau) and the regions in the same latitudes are firstly discussed, also with their differences demonstrated. And then the relationships between two types of tropopause frequency and upper air temperature over the plateau are preliminary discussed. The results are as follows: 1) Two types of tropopause frequency calculated by the reanalysis data through the temperature lapse rate interpolation method are almost consistent with that observed over the Plateau in climatology variations: Differences of the tropical tropopause frequency in cold and warm season are unapparent with high frequency all year round; while differences of the polar tropopause frequency in cold and warm season are apparent with very low frequency in July and August; the tropical tropopause frequency derived from reanalysis data is more credible than the polar tropopause frequency. 2) During warm (cold) season, the tropical tropopause frequency increases (decreases), while seasonal variations of the polar tropopause frequency are opposite; Compared with the regions in the same latitudes, the tropical (polar) tropopause frequency is less (more) in winter, more (less) in other seasons. Gradient of two types of tropopause frequency contours over the plateau is larger, which means tropopause over the plateau are more likely to break. 3) The seasonal and interannual variations of two types of tropopause frequency display close linkage with the temperature over the plateau: when the temperature in the upper troposphere (in the lower stratosphere) over the plateau increases (decreases), the tropical tropopause frequency increases and the polar tropopause frequency decreases accordingly, vice versa.
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