wind speed, roughness of surface, and temperature.

temperature, local time, and environmental lapse rate.

stability, wind speed, and roughness of surface.

roughness of surface, temperature, and local time.

the main part of the air in the troposphere by absorption.

mainly the water vapour that heats the air of the troposphere by conduction.

the surface of the earth, which heats the air in the troposphere.

the air in the troposphere only directly if no clouds are present.

low atmospheric pressure, rotating clockwise in the southern hemisphere, counter-clockwise in the northern hemisphere.

high atmospheric pressure, rotating clockwise in the southern hemisphere, counter-clockwise in the northern hemisphere.

low atmospheric pressure, rotating clockwise in the northern hemisphere, counter-clockwise in the southern hemisphere.

high atmospheric pressure, rotating clockwise in the northern hemisphere, counter-clockwise in the southern hemisphere.

Cirrostratus

Stratus

Stratocumulus

greatest at 60°N.

greatest at 40°N.

the same at all latitudes.

least at 50°N.

ratio of the vapour pressure of a sample of air to the saturation pressure at the existing temperature.

temperature at which the pressure exerted by the surroundings upon a liquid is equalled by the pressure exerted by the vapour of the liquid.

temperature at which moisture in the air will condense as a layer of frost on any exposed surface.

temperature at which the vapour present in a sample of air would just cause saturation.

This is due to changing wind directions on approach

The airfield is most probably situated near water (on the seaside).

This is typical for northern hemisphere.

This is typical for southern hemisphere.

due to the transfer of latent heat into an adjacent heat sink.

that is best achieved by very slow processes to foster heat exchange.

of an expanding volume of air without heat exchange with its surroundings.

of a volume of air gained by the compression of the respective volume.