Page 257 - PPL-engelsk 2025

Meteorology

3.4.4 Local winds

Local winds are winds that occur in specific places due to local conditions.

3.4.4.1 Sea breeze

Imagine a summer day with calm weather. In the morning, the sun heats the

land.

Warm air will rise in the

middle of the land, creating a

so-called low thermal

pressure.

Air will be drawn from coastal
areas into the middle of the

land.

This is called a sea breeze.

3.4.4.2 Land breeze

In the evening, the opposite occurs.

The air over the land cools and sinks, creating thermal high pressure.

The air spreads out towards the coastal area, which is warmer due to the better

thermal conductivity of water.

This causes the air to rise over the
water, and cooler air is drawn

toward the coast. In higher

altitudes, the wind blows inland.

This is called a land breeze.

Flight Theory PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 257