Modified version of the SHADE2 model

Source: R/SHADE2_AL.R

This is a modified version of the SHADE2 function in this package designed to work with the aqua_light function. The SHADE2 function in this package is based on the original SHADE2 model from Li et al. (2012) Modeled riparian stream shading: Agreement with field measurements and sensitivity to riparian conditions

SHADE2_AL(
  driver,
  solar,
  Lat,
  Lon,
  channel_azimuth,
  bankfull_width,
  BH,
  TH,
  overhang,
  overhang_height
)

Arguments

driver

The site driver file
solar

Solar geometry, calculated from solar_geo_calc.R
Lat

The site Latitude
Lon

The site Longitude
channel_azimuth

Channel azimuth
bankfull_width

Bankfull width (m)
BH

Bank height (m)
TH

Tree height (m)
overhang

Effectively canopy radius
overhang_height

height of the maximum canopy overhang (think canopy radius)

Value

Returns total percent of the wetted width shaded by the bank and by vegetation