photobiologyWavebands (version 0.5.2)

Red: Constructor of red waveband

Description

Wavelength-range definitions for red light according to ISO or as commonly used in plant or remote sensing applications.

Usage

Red(std = "ISO")

Value

a waveband object defining a wavelength range.

Arguments

std

a character string, one of "ISO", "Smith10", "Smith20", "Inada", "Warrington", "Sellaro", "RS", "LandsatOLI", "LandsatTM", "LandsatETM", "LandsatMSS", and "LandsatRBV".

Details

The different arguments passed to formal parameter std determine the range of wavelengths set as boundaries of the returned waveband object; "ISO" is an standardized definition based on human colour vision; "Smith10", "Smith20", "Inada", "Warrington", "Sellaro" and "Broad" are non-standard but used in plant sciences; "RS" is non-standard but frequently used in remote sensing; the remaining definitions are for the published wavelength sensitivity range of imagers (cameras) in the Landsat satellite missions.

In plant photobiology the definitions proposed by Prof. Harry Smith are the most widely used, specially to compute a red to far-red photon ratio relevant to phytochrome photoreceptors. However, other authors have used different definitions in their publications. "Smith10" (655-665 nm), "Smith20" (650-670 nm), "Inada" (600-700 nm), "Warrington" (625-675 nm), and "Sellaro" (620-680 nm).

References

Aphalo, P. J., Albert, A., Björn, L. O., McLeod, A. R., Robson, T. M., Rosenqvist, E. (Eds.). (2012). Beyond the Visible: A handbook of best practice in plant UV photobiology (1st ed., p. xxx + 174). Helsinki: University of Helsinki, Department of Biosciences, Division of Plant Biology. ISBN 978-952-10-8363-1 (PDF), 978-952-10-8362-4 (paperback). Open access PDF download available at tools:::Rd_expr_doi("10.31885/9789521083631").

ISO (2007) Space environment (natural and artificial) - Process for determining solar irradiances. ISO Standard 21348. ISO, Geneva.

Murakami, K., Aiga I. (1994) Red/Far-red photon flux ratio used as an index number for morphological control of plant growth under artificial lighting conditions. Proc. Int. Symp. Artificial Lighting, Acta Horticulturae, 418, ISHS 1997.

Sellaro, R., Crepy, M., Trupkin, S. A., Karayekov, E., Buchovsky, A. S., Rossi, C., & Casal, J. J. (2010). Cryptochrome as a sensor of the blue/green ratio of natural radiation in Arabidopsis. Plant physiology, 154(1), 401-409. tools:::Rd_expr_doi("10.1104/pp.110.160820").

Smith, H. (1982) Light quality, photoperception and plant strategy. Annual Review of Plant Physiology, 33:481-518. tools:::Rd_expr_doi("10.1146/annurev.pp.33.060182.002405")

See Also

waveband

Other unweighted wavebands: Blue(), Far_red(), Green(), IR(), Orange(), Purple(), UVA(), UVB(), UVC(), UV(), VIS(), Yellow()

Examples

Red()
Red("ISO")
Red("Smith")
Red("Sellaro")

e_irrad(sun.spct, Red()) # W m-2
q_irrad(sun.spct, Red()) # mol m-2
q_irrad(sun.spct, Red(), scale.factor = 1e6) # umol m-2