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

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 po...

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Bibliographic Details
Main Authors: ハタナカ マサヒコ, オオタ ヨシユキ, ニシツジ アキラ, サカグチ タケシ, ワダ マコト, Masahiko HATANAKA, Yoshiyuki OHTA, Akira NISHITSUJI, Takeshi SAKAGUCHI, Makoto WADA
Format: Report
Language:English
Published: Faculty of Engineering, Muroran Institute of Technology 1995
Subjects:
Syowa Station
Antarc*
Antarctica
Polar meteorology and glaciology
Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3883
http://id.nii.ac.jp/1291/00003883/
https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3883&item_no=1&attribute_id=18&file_no=1
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Summary: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.

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