What types of air masses affect weather in the UK?
The four main air masses that affect the British Isles are:
- Tropical maritime (warm and moist air)
- Tropical continental (warm and dry air)
- Polar maritime (cold and moist air)
- Polar continental (cold and dry)
How do air masses and fronts influence weather?
Each air mass has unique temperature and humidity characteristics. Often there is turbulence at a front, which is the borderline where two different air masses come together. The turbulence can cause clouds and storms. Instead of causing clouds and storms, some fronts just cause a change in temperature.
How does wind affect climate?
Wind carries moisture into an atmosphere, as well as hot or cold air into a climate which affects weather patterns. Therefore, a change in wind results in a change of weather. … Additionally, heat and pressure cause the wind to shift direction.
What is the effect of air masses cooling and sinking?
Air masses are not stationary, and their movement affects weather. When air masses experience convectional lifting, or the rising of warm air and sinking of cool air, we get cumulus clouds. If they grow large enough, cumulus clouds can turn into thunderstorm clouds and produce some pretty intense storms.
What factors influence air masses?
The nature of air masses is determined by three factors: the source region, the age and the modifications that may occur as they move away from their source region across the earth’s surface.
Which weather systems affect the UK?
Throughout the year, low pressure weather systems frequently move across the UK, and these tend to bring cloud, rain, and windy weather. They usually consist of a ‘warm front’ a ‘cold front’ and an ‘occluded front’, in the shape of a triangle.
What is the weather like in the region of the British Isles affected by the Polar Maritime?
Arctic Maritime – This air mass brings very cold conditions in winter; cold in spring; rare in summer. It slowly heats up as it crosses the sea, picking up some moisture and becoming unstable in its lower layers. Snow in winter in Scotland; hail in spring, often in heavy showers.