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Measurement and Analysis of Environmental Solar UV-B

环境太阳UV-B测量与分析

基本信息

批准号：
07458125
负责人：
SASAKI Masako
金额：
$ 3.33万
依托单位：
Tokai University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07458125/
关键词：
solar UV-B radiation solar UV-B sky radiance UV-B sky radiance distribution Total radiation solar UV-A radiation solar UV-B sky radiance meter

项目摘要

The solar ultraviolet-B (UV-B : 290-320 nm) sky radiation influences living things and materials on the earth's surface. To our knowledge, there are no reports on the analysis of the distribution of the solar UV-B sky radiance. The projects are to evaluate a solar UV-B sky radiance meter, to measure the distribution of the solar UV-B sky radiance and to analyze the effects of the solar UV-B sky irradiance on life and matters. We recently developed a new solar UV-B sky radiance meter to measure solar UV-B sky radiance and its distribution. The UV-B sensor of the radiance meter is based on the all-weather type UV-B radiometer developed by our laboratory. The radiance meter head has one UV-B sensor together with one Total (300-3000 nm) sensor, and these sensors can be replaced by UV-A (320-400 nm) sensors. The field of view of each sensor is 11 degrees (full angle). The sky radiance meter measures solar UV-B sky radiance every 12 degrees per 5 minutes scanning by personal computer control. To analyze cloud effects on the distribution of the solar UV-B sky radiance, an infrared all sky photograph is taken before scanning solar UV-B sky radiance. The distribution of the solar UV-B sky radiance is measured every half an hour from sunrise to sunset, and then a correlation between solar UV-B sky radiance and clouds is analyzed. Preliminary results of analysis of solar UV-B sky radiance indicate that the distribution of solar aureole of Total and that of UV-B are quite different, that is, the solar aureole of UV-B showed a wider spatial distribution than that of Total.

太阳紫外线b （UV-B: 290-320 nm）的天空辐射影响着地球表面的生物和物质。据我们所知，目前还没有关于太阳UV-B天空辐射分布分析的报告。项目包括评价太阳UV-B天空辐射计，测量太阳UV-B天空辐射的分布，分析太阳UV-B天空辐射对生命和物质的影响。我们最近开发了一种新的太阳UV-B天空辐射计，用于测量太阳UV-B天空辐射及其分布。辐射计的UV-B传感器是在本实验室研制的全天候型UV-B辐射计的基础上研制的。亮度计头有一个UV-B传感器和一个Total （300-3000 nm）传感器，这些传感器可以被UV-A （320-400 nm）传感器取代。每个传感器的视场为11度（全角度）。天空辐射计由个人电脑控制，每5分钟扫描一次12度，测量太阳UV-B天空辐射。为了分析云层对太阳UV-B天空辐射分布的影响，在扫描太阳UV-B天空辐射之前，拍摄了一张红外线全天照片。从日出到日落每半小时测量一次太阳UV-B天空辐射的分布，分析太阳UV-B天空辐射与云层的相关性。太阳UV-B天空辐射分析的初步结果表明，Total的太阳光晕与UV-B的太阳光晕分布有较大差异，即UV-B的太阳光晕比Total的太阳光晕空间分布更广。