Uncontrolled copy not subject to amendment Basic Navigation Using Map and Compass.

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Presentation transcript:

Uncontrolled copy not subject to amendment Basic Navigation Using Map and Compass

Learning Outcome 5: Be able to recognise weather conditions that affect land navigation

Hot and Cold Air Masses

Main Air Masses Width of the arrows indicates the frequency of occurrence

Weather Map

Fronts and Frontal Depressions Numbers refer to pressure in millibars

Weather Map – Westerly Winds

Depression Chart

Depression

Fronts and Frontal Depressions Section through a frontal system Cold front is steeper than the warm front

Upper Winds Weather map showing isobars for both upper and lower winds

Local Warming

High and Low Pressure

Approaching Rain

Depression X Section

Warm Front

Cold Front

Occluded Front

Pockets of Air

Thermals above

Air rising over mountains

Rising Air Dewpoint

Cloudy foothills

High and Low Pressure

Funnels and Eddies

Banner Clouds

Temperature Inversion

Cross Section