Method (Symbol)

Description

Reference

Parcel (par)

Height of the mixing layer is based on the vertical displacement of the air parcel on the surface. It corresponds to the height of the value of the virtual potential temperature at the value of the surface.

Holzworth (1964); Seibert et al. (2000)

Maximum vertical gradient of potential temperature (Th)

The height corresponding to the maximum of the vertical gradient of the potential temperature

Oke (1988); Stull (1988); Sorbjan (1989); Garratt (1992)

Specific humidity (Sh)

The height corresponding to the minimum of the vertical gradient of the specific humidity

Ao et al. (2008)

Surface-based inversion (Rh)

The height corresponding to the minimum of the relative humidity

Sokolovskiy et al. (2006); Basha and Ratnam (2009)

Refractivity (N)

The height corresponding to the minimum of refractivity

Smith and Weintraub (1953)

Inversion of the temperature in altitude (temp)

Basis of altitude inversion of the temperature

Bradley et al. (1993)

Inversion of the surface temperature

Top of the surface temperature inversion

Bradley et al. (1993)