A METHOD OF MEASURING SNOW PARTICLE SIZE FROM VIDEO IMAGES FOR METEOROLOGICAL RADAR OBSERVATIONS

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概要

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• For meteorological radar observations, it is very important to know the size and the characteristics of precipitation particles. In this paper, we report a method to measure snow particle size using snow particle video images. An image of snow particles, which was recorded by a specially designed portable video camera set on the ground, was digitized by a popular-priced personal computer. To reduce background offset, we used subtraction processing between images at different recording times. Using projection data on this image, the position of each snow particle was detected. Finally, we measure the three kinds of snow particle "radius". We applied this method to two sets of VCR tapes that had been recorded at Syowa Station, Antarctica, on April 5-6 and on October 1,1988,and obtained relative distributions.

• 国立極地研究所の論文

著者

• Wada Makoto

  National Institute For Polar Research

• Ohta Yoshiyuki

  Faculty Of Veterinary And Animal Science Nippon Veterinary And Animal Science University

• Ohta Yoshiyuki

  Faculty Of Engineering Muroran Institute Of Technology:mobile Radio Terminals Development Section Fu

• Ohta Y

  Sci. Services Chiba Jpn

• HATANAKA Masahiko

  Faculty of Engineering, Muroran Institute of Technology

• NISHITSUJI Akira

  Faculty of Engineering, Muroran Institute of Technology

• SAKAGUCHI Takeshi

  Faculty of Engineering, Muroran Institute of Technology

• NISHITSUJI Akira

  Muroran Institute of Technology

• Nishitsuji Akira

  Faculty Of Engineering Muroran Institute Of Technology:faculty Of Business Administration And Inform

• Sakaguchi Takeshi

  Faculty Of Engineering Muroran Institute Of Technology

• Ohta Y

  Department Of Animal Science Nippon Veterinary And Life Science University

• Nishitsuji Akira

  The Institute Of Applied Electricity Hokkaido University

• Nishitsuji Akira

  Faculty Of Engineering Muroran Institute Of Technology:faculty Of Business Administration And Inform

• Hatanaka Masahiko

  Faculty Of Engineering Muroran Institute Of Technology

• Ohta Yoshiyuki

  Faculty Of Applied Biological Science Hiroshima University

• Nishitsuji Akira

  Faculty Of Engineering Muroran Institute Of Technology:faculty Of Business Administration And Information Science Hokkaido Information University

• Wada Makoto

  National Inst. Polar Res. Tokyo

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