The South Carolina Flood of October 2015: Moisture Transport Analysis and the Role of Hurricane Joaquin
The South Carolina Flood of October 2015: Moisture Transport Analysis and the Role of Hurricane Joaquin
复制标题
2015 年 10 月南卡罗来纳州洪水：水分传输分析和飓风华金的作用
DOI：
10.1175/jhm-d-16-0235.1
复制
发表时间：
2017
影响因子：
3.8
通讯作者：
G. Lackmann
中科院分区：
文献类型：
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作者：
Christopher G. Marciano;G. Lackmann
摘要2015年10月初，南卡罗来纳州出现创纪录的降雨，最大累积量超过500毫米。暴雨期间，飓风华金位于洪水事件东南部的近海。之前的研究、风暴摘要、卫星图像和媒体报道都表明，华金在洪水中发挥了重要作用，主要是通过提供额外的水蒸气。在这里，利用数值模拟来阐明华金的作用，洪水和诊断水分输送机制。南卡罗来纳州的降水事件和华金飓风的路径是合理的两个控制模拟，一个36公里的模拟没有嵌套和另一个12和4公里的巢增加，后者改善了华金的负强度偏差。一个带的激烈的水汽输送到洪水区与一个狭窄的，非绝热产生的气旋性对流层下部位涡（PV）最大值。模拟...
AbstractRecord-setting rainfall occurred over the state of South Carolina in early October 2015, with maximum accumulations exceeding 500 mm. During the heavy rainfall, Hurricane Joaquin was located offshore to the southeast of the flooding event. Prior research, storm summaries, satellite imagery, and media accounts suggest that Joaquin played a major role in the flooding, mostly through the provision of additional water vapor. Here, numerical simulations are utilized to elucidate Joaquin’s role in the flooding and to diagnose moisture transport mechanisms. The South Carolina precipitation event and the track of Hurricane Joaquin are reasonably represented by two control simulations, a 36-km simulation without nesting and another with 12- and 4-km nests added; the latter improves upon a negative intensity bias for Joaquin. A band of intense moisture transport into the flooding region is associated with a narrow, diabatically produced cyclonic lower-tropospheric potential vorticity (PV) maximum. Simulatio...