Azara Blog: Study looking at the effect of climate change on Europe

Blog home page | Blog archive

Google   Bookmark and Share
 

Date published: 2005/10/28

The BBC says:

Mediterranean and mountain regions of Europe will be hardest hit by the changes set to affect the continent's natural resources this century.

That is the conclusion of a Europe-wide assessment that highlights the threat posed by climate change.

The Mediterranean will be at increased risk of forest fires, water shortages, loss of agricultural land and from its tree species shifting northward.

The study, by an international team, appears in the journal Science.

The assessment set out to forecast the impact of climate change, shifting land use and socio-economic factors on Europe during the 21st Century.

It simulated the effects of changes in soil fertility and water availability as the climate changes and humans respond, for example, by modifying land use patterns or moving to new areas.

Of all European regions, the Mediterranean was most vulnerable to the global-scale changes projected to occur during the course of this century.

Many of the effects on this region are related to increased temperatures and reduced rainfall.

"If you have an increase in droughts, you get an increased risk of forest fires and changing suitability for crops. You will also see decreases in water per capita for the people living there," said lead author Dagmar Schroeter of Harvard University.

Mountain regions also appear vulnerable because of a rise in the elevation of snow cover and changes in river run-off.

"In winter, precipitation will fall as rain instead of snow. The whole regime of peak flow times changes and you get an increased probability of flooding in winter and spring," Dr Schroeter told the BBC News website.

"You will get less water in summer because the water which was stored in the snow cover is no longer there."

Such changes would significantly impact both the skiing and hydroelectric industries, Dr Schroeter said.

The report did identify some positive effects. These include forest expansion due to a reduced demand on land from agriculture. Farmers in northern Europe could also begin to exploit crops usually grown in the Mediterranean.

Forests act as a "carbon sink" absorbing the greenhouse gas carbon dioxide from the atmosphere. But by the latter half of the century, rising temperatures due to climate change will balance this positive effect.

"By mid-century, it will probably become so hot that the soils will, instead of absorbing carbon dioxide, start releasing carbon dioxide - they will become an additional source of greenhouse gas emissions," explained Dr Schroeter.

The Harvard researcher says other parts of the world will fare much worse than Europe in the face of climate change and other global trends.

"If you live in Europe you are a lucky toad, but maybe not as lucky as I would have thought before doing this assessment. I was surprised by some of the very negative impacts of climate change," she said.

The researchers conclude that the involvement of policy-makers is required if European states are to develop effective strategies to cope with the changes.

Crystal ball gazing like this is all very good fun, especially for academics, but anyone who seriously thinks they can predict what is going to happen in 50 years is rather deluded. Just imagine the kind of predictions that could have been made 50 years ago about life today. Most of them would have been completely wrong. Nobody would have predicted that the coal industry would shrink to nothing, nobody would have predicted that loads of Brits would go to Spain each year on holiday, etc. And until you know about the demands on land (and water and other resources) and the patterns of employment and recreation, you cannot have a hope of predicting what any environmental impact (such as global warming) will be.

_________________________________________________________
All material not included from other sources is copyright cambridge2000.com. For further information or questions email: info [at] cambridge2000 [dot] com (replace "[at]" with "@" and "[dot]" with ".").