Minor changes in docstring

Author: Birgit Schachler

windpowerlib/density.py

@@ -64,7 +64,7 @@ def temperature_interpol(temp_air_1, temp_air_2,
     r"""
     Calculates the temperature at hub height by inter- or extrapolation.
 
-    This fuction is carried out when the parameter `temperature_model` of an
+    This function is carried out when the parameter `temperature_model` of an
     instance of the :class:`~.modelchain.ModelChain` class
     is 'interpolation'.
 
@@ -111,19 +111,19 @@ def rho_barometric(pressure, pressure_height, hub_height, temp_hub):
     Calculates the density of air at hub height using the barometric height
     equation.
 
-    This fuction is carried out when the parameter `rho_model` of an instance
+    This function is carried out when the parameter `rho_model` of an instance
     of the :class:`~.modelchain.ModelChain` class is 'barometric'.
 
     Parameters
     ----------
     pressure : pandas.Series or array
-        Pressure in Pa.
+        Air pressure in Pa.
     pressure_height : float
         Height in m for which the parameter `pressure` applies.
     hub_height : float
         Hub height of wind turbine in m.
     temp_hub : pandas.Series or array
-        Temperature at hub height in K.
+        Air temperature at hub height in K.
 
     Returns
     -------
@@ -167,19 +167,19 @@ def rho_ideal_gas(pressure, pressure_height, hub_height, temp_hub):
     r"""
     Calculates the density of air at hub height using the ideal gas equation.
 
-    This fuction is carried out when the parameter `rho_model` of an instance
+    This function is carried out when the parameter `rho_model` of an instance
     of the :class:`~.modelchain.ModelChain` class is 'ideal_gas'.
 
     Parameters
     ----------
     pressure : pandas.Series or array
-        Pressure in Pa.
+        Air pressure in Pa.
     pressure_height : float
         Height in m for which the parameter `pressure` applies.
     hub_height : float
         Hub height of wind turbine in m.
     temp_hub : pandas.Series or array
-        Temperature at hub height in K.
+        Air temperature at hub height in K.
 
     Returns
     -------

windpowerlib/wind_speed.py

@@ -77,7 +77,7 @@ def logarithmic_wind_profile(v_wind, v_wind_height, hub_height, z_0,
     if 0.7 * obstacle_height > v_wind_height:
         raise ValueError("To take an obstacle height of {0} m".format(
                          obstacle_height) + " into consideration, wind" +
-                         " speed data of a higher height is needed.")
+                         " speed data of a greater height is needed.")
     return (v_wind * np.log((hub_height - 0.7 * obstacle_height) / z_0) /
             np.log((v_wind_height - 0.7 * obstacle_height) / z_0))