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phase function

A function describing the dependence of scattered radiance on scattering angle. The phase function is a dimensionless and normalized version of the scattering function, such that the integral of the phase function over 4π steradians equals 4π. The phase function for a given wavelength is a property of the medium, not of the incident radiation, provided the incident radiation is unpolarized. As the size parameter of a scatterer increases, its phase function becomes more anisotropic, with progressively more of the scattered radiance being concentrated into a diffraction peak. See also Rayleigh phase function, Henyey–Greenstein phase function.

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  • ส่วนหนึ่งของคำพูด: noun
  • อุตสาหกรรม/ขอบเขต: Weather
  • Category: Meteorology
  • Company: AMS

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