Category:Weather: Difference between revisions
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=== Inversion === | === Inversion === | ||
An indication of the presence of wind shear | An indication of the presence of wind shear | ||
=== Atmospheric Diurnal Pressure Variation === | |||
It is caused by alternate daytime heating and night-time cooling. Diurnal refers to twice daily. | |||
Revision as of 11:00, 11 March 2009
This is the category page for weather. Any aviation topics related to weather can be found here.
Trough
A trough is an elongated U-shaped area of low pressure with high pressure on either side which may bring about a gradual wind shift. It is also the V-shape formed by the sharp bending of the isobars along a frontal surface.
Trowal
Trough of Warm Air Aloft. Typically used during winter weather, it is a "tongue" of relatively warm/moist air aloft that wraps around to the north and west of a mature cyclone. It is best analyzed between 750-550 millibars using equivalent potential temperature (theta-e). Areas of intense lift and frontogenesis are commonly associated with trowals, hence they are favoured regions for heavy and/or prolonged precipitation. During a winter storm, the heaviest snowfall amounts frequently occur along and north of the trowal axis.
Ref: Trowal Definition
Inversion
An indication of the presence of wind shear
Atmospheric Diurnal Pressure Variation
It is caused by alternate daytime heating and night-time cooling. Diurnal refers to twice daily.
Pages in category "Weather"
The following 9 pages are in this category, out of 9 total.
