swdr: Shortwave downward radiation

Description Usage Arguments References See Also

Description

Shortwave downward radiation model proposed by Allen et al. (2007).

Usage

1
swdr(d, tau, theta)

Arguments

d

numeric inverse squared relative earth-sun distance or Date object from which to derive it.

tau

Broadband atmospheric transmissivity, e.g. derived from atmosTrans.

theta

Raster* object, solar incidence angle.

References

Allen RG, Tasumi M, Trezza R (2007) Satellite-Based Energy Balance for Mapping Evapotranspiration with Internalized Calibration (METRIC) – Model. Journal of Irrigation and Drainage Engineering 133(4), 395-406, http://dx.doi.org/10.1061/(ASCE)0733-9437(2007)133:4(395) (accessed 2016-03-07).

See Also

calcEarthSunDist, atmosTrans.


environmentalinformatics-marburg/reset documentation built on May 16, 2019, 7:54 a.m.