您的位置:标准吧 > 标准下载 > CIE-85-1989 英文版

CIE-85-1989 英文版

时间:2021-8-4 11:13:54 作者:1158935090 来源:CI 阅读:79次
CIE-85-1989 英文版
1. INTRODUCTION
It was
decided to revise and update CIE Publication No.20 (TC-2.2) 1972.The main reasons for this decision could be summarized as follows.
It hasbecome obvious that the solar spectral irradiance data on which therecommendations in the original document were based were no longer the mostreliable.
During
the past decadea vast amount of new data has becomeavailableboth through modernized me asurement techniques as we1l asimprovedmodelling and parameterization methods. Contrary to the situationsome years ago, the stage has now been reached where results for solarspectral irradiances at ground 1eve1 as measured and those obtained byreliablemodel ing,using extraterrestrial data as basis,show agreement toaccuracies we11 within predictable or estimable uncertainties. It has thusbecomepossible to calculate solar spectral irradiance levels and charac-teristics foranysite onearth provided appropriate meteorological andatmospheric parameters are applied in reliable modeling formulas. This enablesclosesimulation of solar irradiance characteristics for anygeographical site, without the need of having to make in situ measurements.It is also desirable that the number of spectral bands for which integratedsolar irradiance1evels are given, should be increased, especially in theultraviolet region where the degradation coefficient for organic materialincreases nearly exponentially with a decrease in wavelength.

79
国家标准下载

下载说明:
1.请先分享,再下载
2.直接单击下载地址,不要使用“目标另存为”
3.压缩文件请先解压
4.PDF文件,请用PDF专用软件打开查看
5.如果资料不能下载,请联系本站
相关国家标准
最新评论
发表评论
大名:
联络: QQ 或者 邮箱
内容:不能超过250字,需审核,请自觉遵守互联网相关政策法规。

验证码: 3627