New laser technology to determine present weather parameters
New laser technology to determine present weather parameters
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新激光技术确定当前天气参数
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
J. Coupland
中科院分区：
文献类型：
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作者：
R. Ellis;A. Sandford;G. E. Jones;J. Richards;J. Petzing;J. Coupland
目前的天气传感器作为扩大自动气象站网络和扩展载人观测能力的手段正变得越来越重要。水流星的分类是目前气象传感器处理的主要任务之一。在本文中，我们讨论了一种基于激光的新技术来实现这一目的。该系统通过使用相位多普勒风速技术的导数来精确确定粒子的速度和大小，从而改进了当前的降水监测仪。该仪器还能够区分液态水滴和固体多晶水流星，并可用于估计能见度。将这项技术与其他传感器(如温度和相对湿度探头)结合到气象站中，可以准确地对颗粒类型进行分类。所示的例子数据来自英国莱斯特郡和美国犹他州的测试，它们显示了固体和液体降水事件之间的差异。
Present weather sensors are becoming increasingly important as a means to augment networks of automated weather stations and extend the capability of manned observations. The classification of hydrometeors is one of the principal tasks that is addressed by present weather sensors. In this paper, we discuss a new laser-based technology for this purpose. The system improves upon current precipitation monitors by using a derivative of phase Doppler anemometry techniques to accurately determine particle speed and size. The instrument is also capable of distinguishing between liquid droplets and solid polycrystalline hydrometeors and can be used to estimate visibility. The incorporation of this technology into a meteorological station with other sensors, such as temperature and relative humidity probes, leads to the accurate classification of particle type. The example data shown are taken from tests in Leicestershire, England and Utah, USA and show the differences between solid and liquid precipitation events.