An investigation of thundersnow and deep snow accumulations
An investigation of thundersnow and deep snow accumulations
复制标题
雷雪和深积雪的调查
DOI：
10.1029/2006gl028214
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
J. Podzimek
中科院分区：
文献类型：
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作者：
C. Crowe;P. Market;B. Pettegrew;C. Melick;J. Podzimek
30年逐时地面天气观测资料的比较（1960-1991）和美国中西部上气候网络站的24小时降雪数据揭示了相对罕见的雷雪发生之间的间接联系。（在该数据集中，<1起事件年-1），在确定的22例病例中，有19例病例累积了显著的24小时降雪（>15 cm）。虽然雷雪的位置与24小时最深积雪总量之间没有直接关系，但在雷雪事件附近（<1°纬度）经常发生大量积雪。雷雪的出现往往表明有一个能够产生大量降雪的热带气旋;如果雷雪被预测到，业务气象学家可以有更大的信心预测更深的降雪总量。
A comparison of 30 years of hourly surface weather observations (1960–1991) from first‐order stations and 24‐hour snowfall data from climate network stations over the upper Midwestern United States reveals an indirect association between the relatively rare occurrence of thundersnow (<1 event yr−1 in this dataset) and the accumulation of significant 24‐hour snowfall (>15 cm) in 19 of 22 cases identified. Although no direct relationship is found between the location of thundersnow and the deepest 24‐hour snow totals, significant snow accumulations frequently occurred in proximity (<1° latitude) to thundersnow events. The presence of thundersnow tended to indicate a parent extratropical cyclone capable of producing significant snowfall totals; should thundersnow be anticipated, the operational meteorologist can have much greater confidence in forecasting deeper snow totals.