Climate Flashcards
What is climate?
Overall pattern of weather, usually based on an average of 30 years
What kind of climate does the UK have?
Temperate maritime
What is latitude?
Temperatures drop the further an area is from the equator. Due to the curvature of the earth. In areas closer to the poles sunlight has a larger area of atmosphere to pass through as the sun is at a lower angle in the sky. As a result more energy is lost and temperatures are cooler
What is altitude?
Temperatures rise with height above sea level. Therefore at the top of a hill it is much colder. As air rises over the hills it cools, condenses and precipitates so there is more rain in hilly areas
What is pressure?
Low pressure means that air is rising. This means water vapour condenses to form clouds and precipitation.
What is weather?
Day to day changes in the atmosphere
How does wind affect climate?
Climate is effected by the prevailing wind. If the wind is blowing from the tropics it brings warm temperatures and vice versa. Over sea it brings wet weather and over land dry
How does the distance from the sea affect climate?
Oceans heat up and cool down much slower than land so coastal locations tend to be cooler in summer than places inland with the same latitude and altitude.
How do ocean currents affect climate?
Warm ocean currents heat up the air above
What is a depression?
A depression is a low pressure weather system that affects the UK. It is created over the Atlantic where warm air from the tropics meets cold air from the poles. The warm air moves northwards and rises over the cold air
What is an anticyclone?
Anticyclones are high pressure weather systems. This means that air is descending. As it descends it warms so there isn’t any condensation in the sky. This results in clear skies and no clouds.
Differences between depressions and anticyclones?
Air pressure = D-high A-low Wind speed = D-windy A-calm Wind direction = D-anti-clockwise A- clockwise Cloud cover = D-cloudy A- clear Precipitation = D-heavy A- none Fronts? = D- yes A- no
What happened in Britain’s big freeze?
9000 school closed
16 airports closed
2010
What is the greenhouse effect?
The blanketing effect of the atmosphere in retaining heat given off from the earths surface
What are greenhouse gases?
Gases such as carbon dioxide and methane which are effective at absorbing hear given off from the earth