Climate is all about patterns of weather. WeΒ find out more about the different climates on our planet and what causes them to be different from each other.
When you hear the words βweatherβ and βclimateβ you might think they mean the same thing β but theyβre quite different!
It might be rainy today or it might be sunny β thatβs the weather. But climate is the pattern of weather in a place over a much longer time.
Different parts of the world have very different patterns of weather. The Earthβs climate is driven by energy from the sun which arrives in the form of heat. Half of this energy travels through our atmosphere and reaches the Earthβs surface.
The other half is either absorbed by the atmosphere or reflected back into space. Because the Earth is a sphere, the sun’s rays reach the earth’s surface in polar regions at a much more slanted angle than at equator. So straight away, we know that the Poles are colder than the Equator.
When things arenβt in balance, nature likes to even things out. So the extra energy at the Equator needs to be spread across the planet and itβs this that creates different climate zones across the world.
Warm air rises at the equator and moves toward the poles. Where warm, wet air rises, we get thunderstorms and tropical rainforests. Where air sinks, it stops clouds from formingΒ – so it rains less, even making deserts.
How many climate zones are there and how do they differ?
1. Tropical
Around the Equator we haveΒ tropical climates which are hot and humid, this is where youβll find the worldβs rainforests.
2. Arid
Then there are aridΒ or dry climates – like you’d find in deserts.
3. Mediterranean
Next is MediterraneanΒ with hot dry summers, and cooler wetter winters.
4. Temperate
Then there are temperateΒ climates. Thatβs what we have in the UK, where summers are mild and winters arenβt too cold.
5. Continental
In areas that are a very long way from the sea, the climate is continentalΒ with long, cold winters and short, hot summers.
6. Polar
Finally, thereβs polarΒ climates which experience long periods of extreme cold.
Local climates
You might have been to countries like France and Italy, in the Mediterranean, where they have lots of snow in winter β and some of their mountains are even snow covered all year round.
But they also have beautiful beaches β great fun during the hot and dry summers. So if youβve got both snow covered mountains and hot beaches, does that mean they donβt have a Mediterranean climate?
No,Β it just means that local climates in a country can be different to the regionβs climate. This can be for lots of reasons β high places like mountains tend to be colder because the air is cooler the higher you go.
What else can affect local climates?
Vegetation can also affect the local climate we experience. In equatorial rainforests, dense vegetation blocking the wind combined with high temperatures and rainfall means itβs a very humid place to be! Where thereβs no vegetation, the air can be much drier and the wind can blow.
In busy cities, the air temperature is often warmer than the surrounding countryside, particularly at night-time. This is due to buildings and roads absorbing heat during the day, and giving it off at night.
Another thing that can affect a local climate is the wind! It might be that part of a country frequently catches wind from another region β this is called a prevailing wind. If itβs coming from a hotter place, this might raise temperatures, or if itβs from a colder area, itβll cause the local temperature to drop.
The oceans also have a part to play in influencing our weather and climate.
But just because a place has one climate doesnβt mean it wonβt change.
Climate scientists take measurements over long periods of time to track patterns in temperature and rainfall. These help us know what to expect today and in the future but are also a great way to see what changes have happened in the past.
It’s amazing to think that 20,000 years ago the UK would have been in the Ice Age, and our climate here would have been similar to the Polar climates that we see today! Cold enough to have a pet polar bear!
Next, weβll be finding out about how and why climates change… click here!
You can hear Marina Venturaβs Climate Explorers weekdays from 11.30am on Fun Kids!
Get the series on your phone or tablet and listen whenever you like β at home or in the car!
β¦or you can listen here:
MOBILE: Marina Ventura: Kids Guide to Our Planet
The podcast exploring the environment, ecology, oceans and climates on our planet Earth.
Marina Ventura’s Climate ExplorersΒ with support from theΒ Natural Environment Research Council.
Additional support thanksΒ toΒ Liverpool John Moores University, Manchester Metropolitan University, Met Office, and King’s College London.
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