A Climatology of Cold-Season Nonconvective Wind Events in the Great Lakes Region
A Climatology of Cold-Season Nonconvective Wind Events in the Great Lakes Region
复制标题
大湖区冷季非对流风事件的气候学
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
S. Dillingham
中科院分区：
文献类型：
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作者：
Matthew C. Lacke;J. Knox;J. Frye;A. Stewart;J. Durkee;C. Fuhrmann;S. Dillingham
摘要 使用 11 月至 4 月期间 38 个一级气象站的每小时风数据创建了五大湖地区 44 年非对流风事件 (NCWE) 气候学。根据国家气象局 (NWS) 的两个大风监视或警报标准对数据进行了分析：至少 1 小时至少 18 m s−1 的持续风速或任何持续时间至少 26 m s−1 的阵风。结果表明该地区对非对流强风有明显的西南象限方向偏好。在满足 NWS NCWE 标准的所有事件中，70% 到 76% 与 180° 到 270° 的风向相关。在西南象限内，首选西南偏西方向，所有 NCWE 的 14%–35% 来自该特定罗盘航向。这种方向偏好在冷季 NCWE 频繁发生的六个站点中的五个中得到证实（纽约州布法罗；俄亥俄州代顿；密歇根州兰辛；莫林……
Abstract A 44-yr climatology of nonconvective wind events (NCWEs) for the Great Lakes region has been created using hourly wind data for 38 first-order weather stations during the months of November through April. The data were analyzed in terms of the two National Weather Service (NWS) criteria for a high-wind watch or warning: sustained winds of at least 18 m s−1 for at least 1 h or a wind gust of at least 26 m s−1 for any duration. The results indicate a pronounced southwest quadrant directional preference for nonconvective high winds in this region. Between 70% and 76% of all occurrences that satisfied the NWS criteria for NCWEs were associated with wind directions from 180° through 270°. Within the southwest quadrant, the west-southwest direction is preferred, with 14%–35% of all NCWEs coming from this particular compass heading. This directional preference is borne out in five out of six stations with high occurrences of cold-season NCWEs (Buffalo, New York; Dayton, Ohio; Lansing, Michigan; Moline, ...