Monday 21 February 2011

GLOBAL WARMING : Early Warning Signs


"An increasing body of observations gives
a collective picture of a warming world
and other changes in the climate system."

Intergovernmental Panel on Climate Change (IPCC), 2001
Global Warming Hotspots Map

This map illustrates the local consequences of global warming.
FINGERPRINTS: Direct manifestations of a widespread and long-term trend toward warmer global temperatures
 Heat waves and periods of unusually warm weather
 Ocean warming, sea-level rise and coastal flooding
 Glaciers melting
 Arctic and Antarctic warming
HARBINGERS: Events that foreshadow the types of impacts likely to become more frequent and widespread with continued warming.
 Spreading disease
 Earlier spring arrival
 Plant and animal range shifts and population changes
 Coral reef bleaching
 Downpours, heavy snowfalls, and flooding
 Droughts and fires
The map of early warning signs clearly illustrates the global nature of climate changes. In its 2001 assessment, the Intergovernmental Panel on Climate Change (IPCC) concluded that, �an increasing body of observations gives a collective picture of a warming world and other changes in the climate system."
While North America and Europe—where the science is strongest—exhibit the highest density of indicators, scientists have made a great effort in recent years to document the early impacts of global warming on other continents. Our map update reflects this emerging knowledge from all parts of the world.
Although factors other than climate may have intensified the severity of some of the events on the map, scientists predict such problems will increase if emissions of heat-trapping gases are not brought under control.