Bores Observed During the Warm Season of 2015–2019 Over the Southern North China Plain
Bores Observed During the Warm Season of 2015–2019 Over the Southern North China Plain
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DOI：
10.1029/2022gl099205
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发表时间：
2022-08
影响因子：
5.2
通讯作者：
Shushi Zhang;D. Parsons;Xin Xu;Jisong Sun;Tianjie Wu;F. Xu;Na Wei;Gang Chen
中科院分区：
文献类型：
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作者：
Shushi Zhang;D. Parsons;Xin Xu;Jisong Sun;Tianjie Wu;F. Xu;Na Wei;Gang Chen
这项首次多年的调查聚焦于2015 - 2019年暖季期间华北平原南部的飑线。飑线结构因位置而异，波状飑线往往出现在靠近海岸的地方，而非波状飑线则出现在西部靠近高地的区域。对流活跃的6月和7月最有可能出现飑线。美国南部大平原（SGP）的飑线频率与该地区的夜间低空急流有关，而此处的飑线对天气形势敏感，在三种不同天气形势下，约80%的飑线出现在4 - 5天的时间段内。这些飑线的持续时间比美国南部大平原的飑线短，且传播方向的范围更广。总体而言，这些研究结果发现了飑线频率、移动和结构方面的区域差异，这为未来对中国及全球其他地区的夜间中尺度对流系统和飑线的研究提供了动力。
This first multi‐year investigation focuses on bores over the southern North China Plain during the 2015–2019 warm seasons. Bore structure depended on location with undular bores tending to occur close to the coast and non‐undular bores to the west near elevated terrain. Bores were most likely to occur during June and July when convection is active. While bore frequency over the Southern Great Plains (SGP) of U.S. is linked to the region's nocturnal low‐level jet, the bores herein were sensitive to the synoptic regime with ∼80% occurring during 4‐to‐5‐day periods under three different synoptic regimes. The bores had shorter durations than their SGP counterparts and a far wider range in their direction of propagation. Overall, these findings find regional differences in bores' frequency, movement, and structure serving an impetus for future investigations of nocturnal mesoscale convective systems and bores over China and other locations worldwide.