The use of weather surveillance radar and high-resolution three dimensional weather data to monitor a spruce budworm mass exodus flight
The use of weather surveillance radar and high-resolution three dimensional weather data to monitor a spruce budworm mass exodus flight
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DOI：
10.1016/j.agrformet.2016.12.018
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发表时间：
2017-03-15
影响因子：
6.2
通讯作者：
Saint-Amant, Remi
中科院分区：
文献类型：
--
作者：
Boulanger, Yan;Fabry, Frederic;Saint-Amant, Remi
当前云杉芽孢子虫的可能传播。从高密度地区到低密度地区的暴发使了解其扩散动态和记录与天气模式有关的大规模外逃飞行成为当务之急。在这项研究中，我们使用加拿大东部瓦尔·迪伦的天气监测雷达，结合快速更新周期(RUC)模式输出的天气信息来跟踪和记录2013年7月15日至16日发生的SBW大规模外逃飞行。分析证实了使用天气雷达和RUC数据来帮助评估SBW大规模外逃动力学的潜力。天气监测雷达数据显示，大规模外逃航班分别来自圣劳伦斯河河口的南北两侧，其中大多数人来自北岸落叶严重的地区。在迁出飞行期间，SBW蛾可能覆盖了200多公里的距离。使用雷达数据对这次大规模撤离飞行进行了详细的大规模评估，从而确定了汇聚区，并从以前从未记录过的轻度落叶地区起飞。根据雷达和低对流层天气资料，SBW散布在一个很浅的下风层，可能在400-800m之间。这些结果表明，蛾子一般分散在温度逆温区顶部附近，那里是整个外逃飞行期间气温和风速最高的地方。我们主张，将天气雷达技术与低对流层天气状况数据结合使用，可能会使已经使用的其他监测工具受益，也可能有助于校准SBW大气传输模型。(C)2016由爱思唯尔出版，版权所有。
The likely spread of the current spruce budworm (SBW; Choristoneura fumiferana [Clem.]) outbreak from high to low density areas brings to the forefront a pressing need to understand its dispersal dynamics and to document mass exodus flights in relation to weather patterns. In this study, we used the weather surveillance radar of Val d'Irene in eastern Canada in combination with weather information from the Rapid Update Cycle (RUC) model output to track and document a SBW mass exodus flight that occurred on July 15-16th 2013. Analyses confirmed the potential of using weather radar and RUC data to help assess SBW mass exodus dynamics. Weather surveillance radar data suggested that the mass exodus flight originated from both the northern and southern sides of the St-Lawrence River estuary with most individuals originating from severely defoliated areas on the north shore. During the exodus flight, SBW moths may have covered a distance of over 200 km. Detailed large-scale assessment of this mass exodus flight using radar data allowed for the identification of convergence zones and a liftoff from a lightly defoliated area which has never been documented before. Based on radar and lower tropospheric weather data, SBW dispersed downwind in a rather shallow layer, probably between 400 and 800 m. These results imply that moths were generally dispersing in the vicinity of the top of the temperature inversion zone where both temperature and wind were highest throughout the exodus flight period. We advocate that the use of weather radar technology coupled with data on lower tropospheric weather conditions might benefit other monitoring tools already being used and may also help calibrate SBW atmospheric transport models. (C) 2016 Published by Elsevier B.V. All rights reserved.