| Class | Qualifier | Standard Units | Notes |
|
| gphy | pressure | Pa | |
| gphy | partial pressure | Pa | Partial pressure of a gaseous ingredient. |
| gphy | saturation vapor pressure | Pa | Over water? Over ice? |
| gphy | relative humidity | 1 | Ratio of the actual water vapor pressure to the saturation vapor pressure
(Pa Pa-1). |
| gphy | temperature | K | |
| gphy | dew-point temperature | K | |
| gphy | dew-point depression | K | Difference between temperature and dew-point temperature. |
| gphy | frost-point temperature | K | |
| gphy | virtual temperature | K | |
| gphy | potential temperature | K | |
| gphy | brightness temperature | K | Radiant energy intensity of a particular wave band, expressed as temperature. |
| gphy | lunar azimuth angle | deg | Reckoned clockwise from true north. |
| gphy | lunar zenith angle | deg | |
| gphy | solar azimuth angle | deg | Reckoned clockwise from true north. |
| gphy | solar zenith angle | deg | |
| gphy | wind direction | deg | Direction from which the horizontal wind blows, reckoned clockwise
from true north. |
| gphy | wind speed | m s-1 | Magnitude of horizontal wind component. |
| gphy | eastward wind | m s-1 | Magnitude of east-west wind component; positive toward east. |
| gphy | northward wind | m s-1 | Magnitude of north-south wind component; positive toward north. |
| gphy | vertical wind | m s-1 | Magnitude of vertical wind component; positive upward. |
| gphy | dp/dt | Pa s-1 | Vertical velocity in pressure coordinates. |
| gphy | potential vorticity | K m2 kg-1 s-1 | |
| gphy | mass density | kg m-3 | Mass of an ingredient per unit volume of that ingredient. |
| gphy | mass concentration | kg m-3 | Mass of a substance per unit volume of the mixture. |
| gphy | column mass | kg m-2 | Mass concentration integrated over a line of sight. Zenith? Nadir?
Slant? |
| gphy | number concentration | m-3 | The number of particles or molecules of a substance per unit volume
of the mixture. |
| gphy | column number | m-2 | Number concentration integrated over a line of sight. Zenith? Nadir?
Slant? |
| gphy | surface area concentration | m-1 | Total particle surface area of a substance per unit volume of the
mixture (m2 m-3). |
| gphy | volume concentration | 1 | Total particle volume of a substance per unit volume of the mixture
(m3 m-3). |
| gphy | mass mixing ratio | 1 | Ratio of the mass concentration of an ingredient to the mass concentration
of all other ingredients in the mixture. |
| gphy | mass fraction | 1 | Ratio of the mass concentration of a substance to the mass concentration
of the mixture. Synonym for specific humidity if the substance is
water vapor and the mixture is air. |
| gphy | aerosol mass fraction | 1 | Ratio of the mass concentration of a substance to the mass concentration
of all aerosols. |
| gphy | aerosol number fraction | 1 | Ratio of the number concentration of a substance to the number concentration
of all aerosols. |
| gphy | volume mixing ratio | 1 | Ratio of the number of moles of an ingredient to the total number
of moles of all other ingredients of the mixture (mol mol-1). |
| gphy | mole fraction | 1 | Ratio of the number of moles of a substance to the total number of
moles in the mixture (mol mol-1). |
| gphy | specific number | kg-1 | The number of particles or molecules of a substance per unit mass
of the mixture. |
| gphy | diameter | m | |
| gphy | wavelength | m | |
| gphy | extinction coefficient | m-1 | The fraction of radiant energy depleted per unit optical thickness
of a substance; for a particular wave band. |
| gphy | reflectivity | 1 | Ratio of reflected to incident radiation, at a particular wave band.
A synonym for albedo. |
| gphy | optical depth | 1 | Extinction coefficient integrated over a line of sight. Zenith? Nadir?
Slant? |
| gphy | backscattering ratio | 1 | |
| gphy | depolarization ratio | 1 | Ratio of perpendicular backscatter intensity to parallel backscatter
intensity, with respect to the transmitter polarization axis. |
| gphy | downwelling intensity | W m-2 | Downwelling radiant energy flux, for a particular wave band. |
| gphy | upwelling intensity | W m-2 | Upwelling radiant energy flux, for a particular wave band. |