atmosphericEmissivity: Effective atmospheric emissivity

In environmentalinformatics-marburg/reset: Remote Sensing-Based Evapotranspiration

Description

Compute the effective atmospheric emissivity proposed by Bastiaanssen (1995) and used by Allen et al. (2007) to derive the longwave downward radiation.

Usage

atmosphericEmissivity(tau, cf1 = 0.85, cf2 = 0.09, ...)

Arguments

tau	Broadband atmospheric transmissivity, e.g. derived from atmosTrans.
cf1, cf2	numeric multiplying factor (cf1) and exponent, default to the values defined by Allen et al. (2007).
...	Further arguments passed on to calc.

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, doi:10.1061/(ASCE)0733-9437(2007)133:4(395).

Bastiaanssen WGM (1995) Regionalization of surface flux densities and moisture indicators in composite terrain: a remote sensing approach under clear skies in Mediterranean climates. PhD dissertation, CIP Data Koninklijke Bibliotheek, Den Haag, The Netherlands, http://library.wur.nl/WebQuery/groenekennis/918192 (accessed 2016-03-30).

See Also

lwdr.

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