ASTM G 177 : 2003 : R2012

Name: ASTM G 177 : 2003 : R2012
Brand: ASTM
Price: 62.61 GBP

Superseded

View Superseded by

Standard Tables for Reference Solar Ultraviolet Spectral Distributions: Hemispherical on 37° Tilted Surface

Available format(s)

Hardcopy , PDF

Superseded date

06-08-2020

Language(s)

English

Published date

01-11-2012

Publisher

American Society for Testing and Materials

CONTAINED IN VOL. 14.04, 2015 Gives a standard ultraviolet spectral irradiance distribution that maybe employed as a guide against which manufactured ultraviolet light sources may be judged when applied to indoor exposure testing.

1.1The table provides a standard ultraviolet spectral irradiance distribution that maybe employed as a guide against which manufactured ultraviolet light sources may be judged when applied to indoor exposure testing. The table provides a reference for comparison with natural sunlight ultraviolet spectral data. The ultraviolet reference spectral irradiance is provided for the wavelength range from 280 to 400 nm. The wavelength region selected is comprised of the UV-A spectral region from 320 to 400 nm and the UV-B region from 280 to 320 nm.

1.2The table defines a single ultraviolet solar spectral irradiance distribution:

1.2.1Total hemispherical ultraviolet solar spectral irradiance (consisting of combined direct and diffuse components) incident on a sun-facing, 37° tilted surface in the wavelength region from 280 to 400 nm for air mass 1.05, at an elevation of 2 km (2000 m) above sea level for the United States Standard Atmosphere profile for 1976 (USSA 1976), excepting for the ozone content which is specified as 0.30 atmosphere-centimeters (atm-cm) equivalent thickness.

1.3The data contained in these tables were generated using the SMARTS2 Version 2.9.2 atmospheric transmission model developed by Gueymard (1,2).

1.4The climatic, atmospheric and geometric parameters selected reflect the conditions to provide a realistic maximum ultraviolet exposure under representative clear sky conditions.

1.5The availability of the SMARTS2 model (as an adjunct (ADJG173CD ³) to this standard) used to generate the standard spectra allows users to evaluate spectral differences relative to the spectra specified here.

Committee	G 03
DocumentType	Standard
Pages	10
ProductNote	Reconfirmed 2012
PublisherName	American Society for Testing and Materials
Status	Superseded
SupersededBy	ASTM G 177 : 2003 : R2020
Supersedes	ASTM G 177 : 2003 : R2008 : EDT 1

ASTM E 772 : 2015 : REDLINE	Standard Terminology of Solar Energy Conversion
ASTM E 490 : 2000	SOLAR CONSTANT AND ZERO AIR MASS SOLAR SPECTRAL IRRADIANCE TABLES