lcl()
definition thermo_parcel_path(vector t_profile, vector td_profile, vector p_profile, definition start_condition)
definition thermo_parcel_path(thermo_profile profile, definition start_condition)
Computes the path of an ascending thermodynamic parcel with the given start condition for the given vertical profile. It returns a definition suitable for plotting all the details of the parcel path into a thermodynamic diagram. The vertical profile is either specified as a set of vectors where:
- t_profile: the temperature profile (in K or °C)
- td_profile: the dew point temperature profile (in K or °C)
- p_profile: the pressure profile (in Pa or hPa)
or as a vertical profile where:
profile: the result of a vertical profile extraction from GRIB or BUFR with the thermo_grib() or thermo_bufr() functions, respectively.
The start conditions of the parcel are defined via the start_condition definition that :
Surface
The parcel is started from the surface, i.e. the lowest point of the profile (i.e. from the surface) The definition in this case simply takes the form of
(mode: 'surface')
(mode: 'surface')
Custom:
(mode: 'custom', t: start_temperature, td:, start_dewpoint, p: start_pressure)