pvlib.atmosphere.angstrom_aod_at_lambda(aod0, lambda0, alpha=1.14, lambda1=700.0)[source]

Get AOD at specified wavelength using Angstrom turbidity model.

  • aod0 (numeric) – aerosol optical depth (AOD) measured at known wavelength

  • lambda0 (numeric) – wavelength in nanometers corresponding to aod0

  • alpha (numeric, default 1.14) – Angstrom \(\alpha\) exponent corresponding to aod0

  • lambda1 (numeric, default 700) – desired wavelength in nanometers


aod1 (numeric) – AOD at desired wavelength, lambda1

See also



[1] Anders Angstrom, “On the Atmospheric Transmission of Sun Radiation and On Dust in the Air”, Geografiska Annaler Vol. 11, pp. 156-166 (1929) JSTOR DOI: 10.2307/519399

[2] Anders Angstrom, “Techniques of Determining the Turbidity of the Atmosphere”, Tellus 13:2, pp. 214-223 (1961) Taylor & Francis DOI: 10.3402/tellusa.v13i2.9493 and Co-Action Publishing DOI: 10.1111/j.2153-3490.1961.tb00078.x