geocat.comp.meteorology.saturation_vapor_pressure_slope

geocat.comp.meteorology.saturation_vapor_pressure_slope(temperature, tfill=nan)

Compute the slope [kPa/C] of saturation vapor pressure curve as described in the Food and Agriculture Organization (FAO) Irrigation and Drainage Paper 56 entitled:

Crop evapotranspiration - Guidelines for computing crop water requirement. Specifically, see equation 13 of Chapter 3.

Parameters:

• temperature (numpy.ndarray, xarray.DataArray, list, float) – Temperature in Fahrenheit

• tfill (float, nan, optional) – An optional parameter for a fill value in the return value

Returns:

svp_slope (numpy.ndarray, xarray.DataArray) – The computed slopes of the saturation vapor pressure curve. Will be the same shape as temperature.

Examples

>>> import numpy as np
>>> from geocat.comp import saturation_vapor_pressure_slope
>>> temp = np.array([50, 60, 70])
>>> saturation_vapor_pressure_slope(temp)
array([0.08224261, 0.11322096, 0.153595  ])

See also

Related GeoCAT Functions: actual_saturation_vapor_pressure() saturation_vapor_pressure_slope()

Related NCL Functions: satvpr_temp_fao56