pvlib.atmosphere.kasten96_lt#

pvlib.atmosphere.kasten96_lt(airmass_absolute, precipitable_water, aod_bb)[source]#

Calculate Linke turbidity using Kasten pyrheliometric formula.

Note that broadband aerosol optical depth (AOD) can be approximated by AOD measured at 700 nm according to Molineaux [4] . Bird and Hulstrom offer an alternate approximation using AOD measured at 380 nm and 500 nm.

Based on original implementation by Armel Oumbe.

Warning

These calculations are only valid for airmass less than 5 and precipitable water less than 5 cm.

Parameters:
  • airmass_absolute (numeric) – Pressure-adjusted airmass. [unitless]

  • precipitable_water (numeric) – Precipitable water. [cm]

  • aod_bb (numeric) – broadband AOD. [unitless]

Returns:

lt (numeric) – Linke turbidity. [unitless]

References