A Surface Observation Based Climatology of Diablo-LikeWinds in California’s Wine Country and Western Sierra Nevada
A Surface Observation Based Climatology of Diablo-LikeWinds in California’s Wine Country and Western Sierra Nevada
复制标题
基于地面观测的加州葡萄酒之乡和内华达山脉西部暗黑破坏神风的气候学
作者：
Craig M. Smith;B. Hatchett;M. Kaplan
暗黑破坏神风是一种干燥且阵风性的东北偏北下坡风暴，影响加州北方的弗朗西斯科湾区。2017年10月8日晚，暗黑破坏神风导致了“北方加州大火”的点燃和迅速蔓延，其中包括塔布斯大火，烧毁了圣罗莎的2800所房屋，造成22人死亡和12 B美元的损失。我们分析了来自地面气象站网络的18年数据，结果表明，暗黑破坏神风倾向于在秋季，冬季和春季的清晨发生。除了旧金山弗朗西斯科湾区以北的地区外，类似暗黑破坏神风的情况也经常出现在内华达州西部的塞拉利昂。这两个地区的特点是高风速和低相对湿度，但它们既不倾向于比气候学更温暖，也没有比气候学更高的阵风因子，或阵风与平均风速的比率。
Diablo winds are dry and gusty north-northeasterly downslope windstorms that affect the San Francisco Bay Area in Northern California. On the evening of 8 October 2017, Diablo winds contributed to the ignitions and rapid spread of the “Northern California firestorm”, including the Tubbs Fire, which burned 2800 homes in Santa Rosa, resulting in 22 fatalities and $1.2 B USD in damages. We analyzed 18 years of data from a network of surface meteorological stations and showed that Diablo winds tend to occur overnight through early morning in fall, winter and spring. In addition to the area north of the San Francisco Bay Area, conditions similar to Diablo winds commonly occur in the western Sierra Nevada. Both of these areas are characterized by high wind speeds and low relative humidity, but they neither tend to be warmer than climatology nor have a higher gust factor, or ratio of wind gusts to mean wind speeds, than climatology.