Climate Change and Greenhouse Gases

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Climate Change
Global warming is an overall warming of the planet based on average
temperature over the entire surface.
Climate change is changes in regional climate characteristics including
temperature, humidity, rainfall, wind and severe weather events.
Climate change is one of the world's greatest problems. It is difficult to make
predictions about the future because it is unpredictable because of the actions
that we do. The richest and wealthiest countries make the most emissions and
create the greenhouse gases but it is the whole world and in particular the
poorest ones to have to sort out the problem.
The greenhouse happens because the sulphur dioxide in the atmosphere is
trapping in the sunlight and heat that is produced by the sun. The radiation
from the sun cannot pass through these layers of gases and therefore warms
the Earth up. This process works the same as in a greenhouse as the heat is
trapped inside and cannot escape.
Some activities that human do add to
the greenhouse effect. We burn fossil
fuels which releases carbon dioxide
into the atmosphere. Cutting down
and burning trees also produces a
large quantity of carbon dioxide.
CFC's, which have been banned, were
used in aerosols, firdges and is found in
foam. These can trap large amounts of
heat within them.

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Carbon Cycle - The Carbon Cycle is
involved in the whole
environment. It is present in all
organic substances, simple
compounds such as carbon dioxide,
and complex hydrocarbons such as
crude oil and fossil fuels.
Carbon is transferred through the environment by many biological processes.
These include respiration and chemical solutions.
1. At night photosynthesis stops. The tree continues to respire and it emits
more carbon dioxide than it absorbs.
2. Solar energy is absorbed.
3.…read more

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The Keeling Curve plots the concentration of carbon dioxide in the Earth's
atmosphere since 1958. It demonstrates when the levels first started to rise
and it is this that has brought the problem to the world's attention.
The up and down movement
reflects seasonal changes and
are constant from year to year.
When the Northern
Hemisphere has their spring,
less carbon dioxide is removed
in the atmosphere as they
have the larger proportion of
vegetation.…read more

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Changing ecosystems
It was agreed that climate change would be managed through the Kyoto
Protocol. This set targets to cut greenhouse emissions. Many countries have
lowered their emissions by 5% in 3-7 years.…read more


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