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Greenland glacier melt

Coal is the worst climate offender Enlarge Image

Stop climate change

The world's leaders meet at the end of 2009 in Copenhagen to determine the fate of the climate. They could set us on the path to a deep emissions cuts or they could lock the planet into catastrophic, irreversible climate change.

Temperature change 1765-2100: Graph excerpted from the IPCC's Third Assessment Report showing past and predicted changes to global temperature. Enlarge Image

Science

Climate change is a reality. Today, our world is hotter than it has been in two thousand years. By the end of the century, if current trends continue, the global temperature will likely climb higher than at any time in the past two million years. While the end of the 20th century may not necessarily be the warmest time in Earth's history, what is unique is that the warmth is global and cannot be explained by the natural mechanisms that explain previous warm periods. There is a broad scientific consensus that humanity is in large part responsible for this change, and that choices we make today will decide the climate of the future.

The specks on ice are explorers Lonnie Dupre and Eric Larsen, setting off on the first ever unsupported summer crossing of the Arctic Ocean in order to draw attention to global warming. Enlarge Image

Climate research

It was realised by the mid-18th century that some gases in the Earth's atmosphere, such as carbon dioxide, trap heat and keep the Earth warm. At the start of the 20th century, a Swedish scientist named Svante Arrhenius put forward the idea that human emissions of carbon dioxide would eventually raise temperatures. He didn't see this as a particularly bad thing, and most scientists at the time were sceptical that humans could burn fossil fuels fast enough to have a noticeable impact at all.

Flooded village in southern France, close to a nuclear power station. Earlier in 2003 the same area experienced a long drought. Climate change means more extreme weather like flooding and droughts. Enlarge Image

Impacts

No one knows how much warming is "safe". What we do know is that climate change is already harming people and ecosystems. Its reality can be seen in melting glaciers, disintegrating polar ice, thawing permafrost, dying coral reefs, rising sea levels, changing ecosystems and fatal heat waves. And it is not only scientists that are witnessing these changes. From Inuit in the far north to islanders near the equator - people are already struggling with the impacts of climate change.

Icebergs melting in low sun. Enlarge Image

Global Melting

As the Earth warms, its ice melts. This global melting is an early and obvious sign of climate change, but its implications go far beyond merely losing snow and ice. For starters, some people and ecosystems depend on the ice - glaciers for water supply in areas of seasonal rainfall, for example, and sea ice for habitat.

Polar bear on iceflow. Enlarge Image

Arctic and Antarctic

The Arctic and parts of Antarctica are warming at a much faster rate than the rest of the world. During the 20th century, air temperatures in some parts of the Arctic rose by about 5° Celsius (9° F) – ten times faster than the global average.

Upsala glacier in Patagonia: 1928 vs 2004 Enlarge Image

Glaciers

Glaciers are more than just magnificent landscapes of ice and snow. Around the world they act as frozen reservoirs providing water for billions of people, as well as animals and plants. Glaciers also influence local climates and ecosystems, and their melting is a dramatic warning of a warming world.

Greenpeace observer checking heavy ice floes beside Arctic Sunrise. Enlarge Image

Expeditions and special projects

Here you can find the special weblogs and tour sites we put up for particular projects. Past project sites are archived, and no longer updated.

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For EU related:
Mark Breddy
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mark.breddy@greenpeace.org

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