Hail Climatology and Trends in Romania: 1961–2014
Hail Climatology and Trends in Romania: 1961–2014
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DOI：
10.1175/mwr-d-16-0126.1
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发表时间：
2016-10
影响因子：
3.2
通讯作者：
S. Burcea;Roxana Cică;R. Bojariu
中科院分区：
文献类型：
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作者：
S. Burcea;Roxana Cică;R. Bojariu
摘要利用1961-2014年的冰雹数据，介绍了罗马尼亚冰雹事件的气候学和趋势。利用气象站的冰雹观测资料和模式再分析资料，研究了冰雹的时空分布、变异和环境。结果表明，冰雹发生在山区最多，而东南部地区年平均冰雹日数最少。在此，对流季节被定义为4月至9月，考虑到94.2%的平均月冰雹日在此期间确定。在对流季节，冰雹事件占主导地位，其中大部分发生在下午和晚上1000和1800 UTC之间。总体而言，严重的冰雹事件发生在1400至1600 UTC之间，而西南部的严重冰雹发生在1600至1900 UTC之间。对流参数的空间分布与冰雹日数的空间分布基本一致，说明冰雹对降水不利。
AbstractA climatology and trend of hail events in Romania are presented using hail data spanning the years 1961–2014. Hail observations from weather stations and model reanalysis data were used to document the spatial and temporal distributions, variabilities, and environments of hail events. The results show that hail occurs most frequently in mountainous areas, while the smallest average number of hail days per year is found in the southeast. Herein, the convective season was defined as April–September, given that 94.2% of all mean monthly hail days were identified in this period. During the convective season the hail events prevail with most of these occurring in the afternoon and evening hours between 1000 and 1800 UTC. The severe hail events occur, overall, between 1400 and 1600 UTC, while in the southwest severe hail occurs later between 1600 and 1900 UTC. The spatial distribution of the convective parameters is consistent with the spatial distribution of hail days, revealing that hail is not favore...