Weather measurement system using near-infrared differential spectroscopy

Author

Mizumoto, Ikuro ; Yoshi, Y. ; Oguma, H. ; Tsukada, A. ; Sakai, Shin´ichi

Author_Institution

Dept. of Comput. Eng., Toyama Nat. Coll. of Technol., Imizu, Japan

Volume

49

Issue

14

fYear

2013

fDate

July 4 2013

Firstpage

900

Lastpage

901

Abstract

A weather measurement system was constructed using near-infrared light-emitting diodes and indium gallium arsenide photodiodes for the 1-2 μm near-infrared region. The difference in the absorbance of water for near-infrared light at wavelengths of 945 and 1450 nm was used to distinguish between three different precipitation types: snow, sleet and rain. From the ratio of the number of generated light absorption events at the two wavelengths, a distinction between snow, sleet and rain events was demonstrated. The judgement results by this system were consistent with those obtained from the meteorological observatory weather database.

Keywords

atmospheric measuring apparatus; atmospheric techniques; infrared spectroscopy; weather forecasting; indium gallium arsenide photodiodes; light absorption events; meteorological observatory weather database; near-infrared differential spectroscopy; near-infrared light; near-infrared light-emitting diodes; near-infrared region; precipitation types; wavelength 1 mum to 2 mum; wavelength 945 nm to 1450 nm; weather measurement system;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2012.4359

Filename

6557265