Observations of Tornadoes and Other Convective Phenomena with a Mobile, 3-mm Wavelength, Doppler Radar: The Spring 1999 Field Experiment
Observations of Tornadoes and Other Convective Phenomena with a Mobile, 3-mm Wavelength, Doppler Radar: The Spring 1999 Field Experiment
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使用移动 3 毫米波长多普勒雷达观测龙卷风和其他对流现象：1999 年春季现场实验
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
A. Pazmany
中科院分区：
文献类型：
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作者：
H. Bluestein;A. Pazmany
摘要1999年春，在美国南部平原进行了一项实地试验，俄克拉荷马州大学的风暴拦截小组使用移动的、来自马萨诸塞州阿默斯特的毫米波长脉冲多普勒雷达收集龙卷风和发展中龙卷风的数据。使用0.18°波束天线，在5月3日的龙卷风中，方位角方向的分辨率高达5-10米。收集的数据在三个超级单体龙卷风的描述。特征，如眼睛，螺旋带，和多个漩涡/波状不对称沿沿着眼壁的边缘进行了讨论。使用极化分集脉冲对技术，无需折叠即可解决接近80 m s-1的风。两个龙卷风在反射率的拐点处形成，那里有钩状回波和明显的后翼下沉气流。在一个钩状回波中，精细的横向反射带是明显的。还描述了沙尘暴中的数据。许多其他数据…
Abstract In the spring of 1999 a field experiment was conducted in the Southern Plains of the United States, during which a mobile, millimeter–wavelength pulsed Doppler radar from the University of Massachusetts, Amherst, was used by a storm–intercept team from the University of Oklahoma to collect data in tornadoes and developing tornadoes. With a 0.18° beam antenna, resolution as high as 5–10 m in the azimuthal direction was attained in a tornado on 3 May. Data collected in three supercell tornadoes are described. Features such as eyes, spiral bands, and multiple vortices/wavelike asymmetries along the edge of the eyewall are discussed. Winds approaching 80 m s–1 were resolved without folding using the polarization diversity pulse pair technique. Two tornadoes formed at an inflection point in reflectivity where the hook echo and apparent rear–flank downdraft intersected. Finescale transverse bands of reflectivity were evident in one hook echo. Data in a dust devil are also described. Numerous other data...