403.1b - cloud formed and lifting process knowledge check

Strong surface winds with very dry and stable air

Type of cloud formed: None

Lifting process: Mechanical turbulence

Strong surface winds with very moist and stable air

Type of cloud formed: SC

Lifting process: Mechanical turbulence

Strong surface winds with very moist and very stable air

Type of cloud formed: ST

Lifting process: Mechanical turbulence

Unequal daytime heating with relatively dry and unstable air

Type of cloud formed: CF → CU

Lifting process: Convection

Unequal daytime heating with relatively moist and unstable air

Type of cloud formed: CF → CU → TCU → CB

Lifting process: Convection

Los pressure area (with no fronts associated). Air is moist and very stable

Type of cloud formed: ST

Lifting process: Convergence

Los pressure area (with no fronts associated). Air is moist and stable.

Type of cloud formed: SC

Lifting process: Convergence

Los pressure area (with no fronts associated). Air is moist and unstable in the low and middle levels.

Type of cloud formed: CF → CU

Lifting process: Convergence

Air forced up a slope by the wind. The air is moist and stable.

Type of cloud formed: ST/SC

Lifting process: Orographic lift

Air forced up a slope by the wind. The air is relatively dry and unstable.

Type of cloud formed: CF → CU

Lifting process: Orographic lift

Air forced up a slope by the wind. The air is relatively moist and unstable.

Type of cloud formed: CF → CU → TCU → CB

Lifting process: Orographic lift

Air is forced up by a wedge of cold air

Type of cloud formed: CU → TCU → CB → SC → AC

Lifting process: Frontal Lift

In stable air, when will vertical motion cease?

When the lifting agent ceases to operate.

Identify the most probable lifting agent causing cloud to form:

A band of low and middle cloud is moving with a trough of low pressure

Convergence

Identify the most probable lifting agent causing cloud to form:

Stratocumulus is reported in an area of steep pressure gradient

Mechanical turbulence

Identify the most probable lifting agent causing cloud to form:

TCU forms over Saskatchewan on a warm humid afternoon

Convection

Identify the most probable lifting agent causing cloud to form:

Extensive Stratus over the Prairie Provinces with an easterly wind

Orographic lift