UVI_wb: Constructor of CIE weighted waveband

In photobiologyWavebands: Waveband Definitions for UV, VIS, and IR Radiation

Constructor of CIE weighted waveband

Description

This is just a convenience function that returns the same weights as CIE as defined by CIE_e_fun but with no option to change normalization wavelength, and with the wavelength limits adjusted to those used for UVI. Using std="NOAA" follows the definition in https://www.esrl.noaa.gov/gmd/grad/neubrew/docs/UVindex.pdf but using CIE98 as SWF. NOAA definition discards wavelengths shorter than 286.5 nm as when calculated based on spectral data from Brewer instruments. "WMO" uses the internationally accepted lower limit at 250 nm. "NOAA" is the default as this is safer with noisy data for sunlight, and for solar radiation the value of UVI should be correct. When calculating UVI for radiation spectra from UV lamps, "WMO" should be used.

Usage

UVI_wb(std = "NOAA")

Arguments

std	"NOAA" or "WMO"

Details

UVI (UV Index) based on Erythema BSWF

Value

a list defining the wavelength range, weighting and normalization. This is just the CIE98 BSWF but with the wavelength limits adjusted to those used for UVI.

References

World Health Organization, World Meteorological Organization, United Nations Environment Programme & International Commission on Non-Ionizing Radiation Protection. (2002) Global Solar UV Index: A Practical Guide. World Health Organization, Geneva. ISBN 9241590076. https://apps.who.int/iris/handle/10665/42459

P. Kiedron, S. Stierle and K. Lantz (2007) Instantaneous UV Index and Daily UV Dose Calculations. NOAA-EPA Brewer Network. https://www.esrl.noaa.gov/gmd/grad/neubrew/docs/UVindex.pdf

See Also

UVI

photobiologyWavebands documentation built on Oct. 24, 2023, 5:07 p.m.