一 用途
上的降水粒子测量设备，此设备可以实时测量单个降水粒子（如，雨、雪、雹等）的大小、形状、聚合状态、方向和降落速度等。通过设备软件，还可以计算降水率、降水量和降水粒子谱等。这些数据是充分理解大气降水过程的关键要素，是研究和标定云雷达、降水雷达的*工具，适用于气象和环境、电信和波传播、工业应用等领域。
传感器是由摄像头和背光源组成，摄像头将对测量区域的图像进行线形扫描，将采集区域内的图像传输到电子单元内处理存储，然后用专业配套软件进行一系列分析。
三 组成
设备由测量单元、笔记本电脑、供电单元三部分构成。
l 每个雨滴的前视图
l 每个雨滴的侧视图
l 垂直降落速度
l 每个粒子的时间戳
l 雨滴直径
l 估计雨滴的水平速度
l 令3D重建成为可能
l 降雨率与时间图
l 雨滴粒子分布图
l 垂直速度与等量直径图
l 扁率与直径图
l 评估单个降水粒子相态组成(固态、液态、融化、冰冻等)
l 小粒子分辨能力可达0.17mm，无大粒子尺度限制
l 时间戳分辨率达18μs
软件主屏幕
单个粒子图
降雨率与时间图
垂直速度与等量直径图
雨滴水平速度图
垂直速度与等量直径分布图
五 技术参数
l 垂直方向分辨率：优于0.17 mm，veloc. < 10 m/s
l 垂直速率准确性：优于4 %，veloc. < 10 m/s
l 采样区域面积：100×100 mm2
l 尺寸：960 mm × 960 mm × 890 mm
l 测量单元与电脑远距离：100 m
l 电脑功率：600 W
气候条件下应用2DVD观测降雪数据
l Measurements of Precipitation Characteristics by a New Distrometer
M.Schönhuber1), H.E.Urban1), J.P.V.Poiares Baptista2), W.L.Randeu3) and W.Riedler 3)
1) Institute for Applied Systems Technology, JOANNEUM RESEARCH, Graz/Austria
2) ESA/ESTEC (XEP), Noordwijk, The Netherlands
3) Institute of Communications and Wave Propagation, Technical University Graz/Austria
l 2D VIDEO DISDROMETER: A STUDY OF DIFFERENT CLIMATIC REGIMES
YARITZA MEJIAS-ROLON
Undergraduate Student
University of Puerto Rico at Mayagűez
Mayagűez, Puerto Rico
DR. V.N. BRINGI
Professor
Colorado State University
Fort Collins, Colorado
l An example of computational approach used for aerodynamic design of a rain Disdrometer Un exemple de méthode de calcul utilisée pour le dessin aérodynamique d’un disdromètre de pluie
EMAD HABIB, Graduate Research Assistant, Iowa Institute of Hydraulic Research, The University of Iowa, Iowa City, IA, 52242 USA
WITOLD F. KRAJEWSKI, Professor, Iowa Institute of Hydraulic Research, The University of Iowa, Iowa City, IA, 52242 USA
l WEATHER RADAR VERSUS 2D-VIDEO-DISTROMETER DATA
M. Schönhuber1), H.E. Urban1), J.P.V. Poiares Baptista2), W.L. Randeu3) and W. Riedler3)
1) Institute for Applied Systems Technology, JOANNEUM RESEARCH, Graz/Austria
2) ESA/ESTEC (XEP), Noordwijk, The Netherlands
3) Institute of Communications and Wave Propagation, Technical University Graz/Austria
l OBSERVATIONS OF WINTER STORMS WITH 2-D VIDEO DISDROMETER AND POLARIMETRIC RADAR
Kyoko Ikeda*, Edward A. Brandes, and Guifu Zhang
National Center for Atmospheric Research, Boulder, Colorado
Real-time measurements and analyses of precipitation micro-structure and dynamics W. L. Randeu1,2, M. Sch¨onhuber1, and G. Lammer1
1Institute of Applied Systems Technology, Joanneum Research GmbH, Graz/Austria
2Institute of Communications and Wave Propagation, Technical University Graz, Austria
l DROP SIZE DISTRIBUTIONS IN OKINAWA, JAPAN, FROM 2D-VIDEO DISTROMETER AND C-BAND POLARIMETRIC RADAR
V.N. Bringi (1), K. Nakagawa (2), M. Thurai (1,2), H. Hanado (2), T. Iguchi (2)
Colorado State University, (2) Communications Research Laboratory, Japan
(thurai@crl.go.jp/: +1-970-491-2249)
l Investigation of rainfall microstructure and variability using vertically pointing radar and disdrometer M. Diederich1, S. Crewell1, C. Simmer1, and R. Uijlenhoet2
1Meteorological Institute University of Bonn
2Department of Environmental Sciences Wageningen University
l Z-R (Radar Reflectivity-Rain rate) relationships derived from Czech Distrometer data
Fiˇser
Institute of Atmospheric Physics, AS CR, Bocni II, 1401, 141 31 Prague, Czech Republic
l A Method For Estimating Rain Rate And Drop Size Distribution From Polarimetric Radar Measurements
Guifu Zhang, J. Vivekanandan, and Edward Brandes
National Center for Atmospheric Research
Research Application Program
P. O. Box 3000, Boulder, Colorado 80307
: 303-497-8402, : 303-497-8401
l Sensitivity of 5-cm Wavelength Polarimetric Radar Variables to Raindrop Axial Ratio and Drop Size Distribution
T. D. KEENAN
Bureau of Meteorology Research Centre, Melbourne, Victoria, Australia
L. D. CAREY
Colorado State University, Fort Collins, Colorado
D. S. ZRNIC´
NOAA/National Severe Storms Laboratory, Norman, Oklahoma
P. T. MAY
Bureau of Meteorology Research Centre, Melbourne, Victoria, Australia
(Manuscript received 16 November 1999, in final form 11 May 2000)
l Spurious power-law relations among rainfall and radar parameters By A. R. JAMESON1¤ and A. B. KOSTINSKI
1RJH Scienti. c, Inc., USA
2Michigan Technological University, USA
(Received 3 March 2001; revised 21 January 2002)
l EXPERIMENTAL AND NUMERICAL STUDIES OF SMALL-SCALE RAINFALL MEASUREMENTS AND VARIABILITY
W. F. Krajewski, A. Kruger and V. Nespor Iowa Institute of Hydraulic Research, The University of Iowa, Iowa City, Iowa 52242, USA
l NOTES AND CORRESPONDENCE When is Rain Steady
R. JAMESON RJH Scientific, Inc., El Cajon, California B. KOSTINSKI
Department of Physics, Michigan Technological University, Houghton, Michigan 24 November 2000 and 27 July 2001
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