surfaceEmissivity: Broadband surface emissivity

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

Description

Compute the broadband surface emissivity from the normalized difference vegetation index (NDVI) and leaf area index (LAI) as proposed by Tasumi (2003; see References).

Usage

## S4 method for signature 'numeric,numeric'
surfaceEmissivity(ndvi, lai)

## S4 method for signature 'Raster,Raster'
surfaceEmissivity(ndvi, lai, ...)

Arguments

ndvi	numeric or Raster* object, NDVI.
lai	numeric or Raster* object, LAI.
...	In case of Raster* input, further arguments passed on to overlay.

Value

The broadband surface emissivity in the same format as the input.

References

Tasumi (2003) Progress in operational estimation of regional evapotranspiration using satellite imagery. PhD dissertation, University of Idaho, Moscow, Idaho, USA.

See Also

ndvi, savi, lwur, overlay.

Examples

surfaceEmissivity(ndvi = 0.5, lai = 2)

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