pyrtlib.climatology.ProfileExtrapolation.water_vapour_density#

ProfileExtrapolation.water_vapour_density(lat: float, h: ndarray, season: Optional[str] = 'summer') → ndarray#

Determine the water vapour density at a given latitude and height.

Method to determine the water-vapour density as a function of altitude and latitude, for calculating gaseous attenuation along an Earth-space path. This method is recommended when more reliable local data are not available.

Parameters:

  • lat (numpy.ndarray) – Latitude (degree)

  • h (numpy.ndarray) – Height (km)

  • season (str) – Season of the year (available values, ‘summer’, and ‘winter’). Default ‘summer’

Returns:

rho – Water vapour density (g/m^3)

Return type:

numpy.ndarray

References

[1] Reference Standard Atmospheres https://www.itu.int/rec/R-REC-P.835/en

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