Part 1
What is climate change?
Many indicators, such as the rising temperatures of the Earth’s surface and the rising mean sea level, demonstrate a change in the climate over the last century. A selection of observations of this change and its consequences are presented here, firstly on a global scale and then for France.
The conclusions of the scientific community, synthesised in particular by the IPCC (see glossary), now concur as to the role of human activities in this change: the perturbation in the climate balance is primarily due to anthropogenic emissions of greenhouse gases (see glossary).
This section also presents projections of the consequences of climate change, based on different assumptions of future GHG emissions trajectories.
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