The scientific evidence is conclusive

PRESENTATION ADAPTED FROM EUROPEAN COMMISSION FEBRUARY 2009 FOR DIDACTIC PURPOSES

Climate change

• ‘Climate’ is the long-term atmospheric conditions, ‘weather’ varies constantly.

• Changes in climate are natural: e.g. after the last ice age (11,500 years ago) global temperatures were 5°C lower than now.

• BUT we are now experiencing temperature rises at unprecedented speed.

• Scientists believe that human activities are responsible.

Climate change facts

• Europe’s temperatures have risen by 1°C since 1850.

• Another 1.2°C could mean irreversible, large-scale and potentially catastrophic environmental change.

Climate change facts

• Extreme weather events – storms, floods, droughts and heat waves – have become more frequent and more severe.

• 90% of natural disasters in Europe since 1980 have been caused by weather and climate.

Climate change facts

• Europe’s glaciers have lost two-thirds of their mass since 1850 – and the trend is accelerating.

• Polar ice is melting and sea levels are rising at double the rate of 50 years ago.

• Millions of people around the globe are threatened with water shortages, hunger and poverty.

Source: http://maps.grida.no/go/graphic/satellite-observations-in-arctic-sea-ice-1979-and-2003

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What’s the cause?

• Humans are pumping more ‘greenhouse gases’ into the atmosphere.

• The atmosphere acts like the glass walls of a greenhouse.

• Natural greenhouse gases help retain heat – without them, temperatures would be 30°C lower.

• But man-made greenhouse gases emissions have increased to 70% since 1970, meaning more heat trapped.

Greenhouse gases

carbon dioxide (CO2) – burning coal, oil and gas for energy, transport and heat

nitrous oxide (N2O) – waste disposal sites, agriculture and cattle

methane (CH4)

hydrofluorocarbons (HFCs)

perfluorocarbons (PFCs)

sulphur hexafluoride (SF6)

– used in fridges, air-conditioning and even shoes

Where’s the evidence?

The leading scientific authority on climate change is the United Nations Intergovernmental Panel on Climate Change (IPCC).

•It coordinates findings of 2,500 experts all round the globe.•4th Assessment Report (AR4) was published in November 2007 •AR4 represents 6 years of research and analysis.•It is the result of cautious and rigorous scientific approach to its conclusions.•It is the Nobel Peace Prize winner in 2007.

Findings of 4th Assessment Report

• Conclusive evidence that global warming is due to human activity.

• If temperatures rise by more than 2°C, the effects could be sudden and irreversible.

• We still have time to slow down or adapt to climate change.

• Many useful technologies already exist, and make good economic sense.

• … but urgent action is needed now!

What are governments doing?

• Governments are working together under the UN framework convention on climate change.

• The previous agreement, the Kyoto Protocol, set binding emissions targets for developed countries.

• Negotiations for a follow-up took place in December 2009 in Copenhagen.

The European Union is a pioneer in the battle against climate change

EU countries have set targets for 2020 to:

– Cut emissions by 20% (or 30% if agreed globally)

– Increase energy efficiency by 20%

– Generate 20% of energy from renewable sources

The EU is pushing for an ambitious new global pact to reduce emissions

What can you do?

Simple everyday actions play a major role in the fight against climate change

So…– Recycle

– Save hot water by taking a shower instead of a bath (four times less energy)

– Plant a tree, at school, in your garden or neighbourhood

What can you do?

• Use public transport, cycle, walk.

• Don’t leave appliances on stand-by – use the on/off function of the machine.

• Don’t leave you mobile charger plugged in when you are not charging your phone.

www.climatechange.eu.com