Arctic Maritime Air

Over the weekend, we saw Arctic Maritime air descend over the UK, with temperatures dropping by around 10C. The following snapshot from http://earth.nullschool.net from the morning of Monday 11th May, shows winds blowing clockwise around a High pressure area to the northwest of the UK. This means a northerly air flow over much of the…

In Depth – Understanding Weather (Met Office)

Understanding weather Air masses Atmosphere Clouds El Niño and La Niña High pressure or anticyclone Low pressure or depression Temperature differences Weather fronts Weather systems Wind Air masses Air masses are parcels of air that bring distinctive weather features to the country. An air mass is a body or ‘mass’ of air in which changes…

Air

Air masses and fronts 1. Introduction    1.1 Definition    1.2 Source of an air mass    1.3 Air-mass modification 2. Air-mass types    2.1 Tropical continental    2.2 Polar continental    2.3 Tropical maritime    2.4 Polar maritime    2.5 Arctic maritime    2.6 Returning polar maritime 3. Between the air masses    3.1 Historical introduction    3.2 Fronts    3.3 Models of mid-latitude depressions    3.4 The passage…

Airmasses 2

Tropical continentalPolar continentalTropical maritimePolar maritimeReturning polar maritimeArcticAir masses characteristics Introduction The idea that northerly winds (i.e. winds from the north) are cold, and southerly winds (those from the south) are warm (at least in the northern hemisphere) is quite common. Similarly, air that has travelled over the sea picks up moisture, while air travelling over…

Airmasses

Air masses The figure below shows the pressure system over the UK and western Europe on 9 May. 1. What is the name given to the type of front which is running from the southern part of the Baltic Sea inland into Poland? 2. What is the air mass most likely to be associated with…

Key Stage 4

Resources for 14-16 Year Old Students Other recommended resources: A wide range of animations from the Met Office suitable for geography and science topics. Resources looking at change of state, latent heat, data handling and the Electromagnetic Spectrum from the NCAS/ DIAMET project. An excellent GA resource investigating weather conditions needed for the various Olympic…