Climate change is happening now:• Temperatures are rising.• Rainfall patterns are shifting.• Glaciers and snow are melting.• The global mean sea level is rising.
We expect that these changes will continue, and that extreme weather events resulting in hazards such as floods and droughts will become more frequent and intense. Impacts and vulnerabilities for nature, the economy and our health differ across regions, territories and economic sectors.
Sea level rise Global sea level rose about 17 centimeters in the last century. The rate in the last decade, however, is nearly double that of the last century.
Global temperature rise All three major global surface temperature reconstructions show that Earth has warmed since 1880.
Shrinking ice sheets The Greenland and Antarctic ice sheets have decreased in mass.
Declining Arctic sea ice Both the extent and thickness of Arctic sea ice has declined rapidly over the last several decades.
Glacial retreat Glaciers are retreating almost everywhere around the world (including in the Alps, Himalayas, Andes, Rockies, Alaska and Africa).
Climate change is already beginning to transform life on Earth. Around the globe, seasons are shifting, temperatures are climbing and sea levels are rising. And meanwhile, our planet must still supply us (and all living things) with air, water, food and safe places to live. If we dont act now, climate change will rapidly alter the lands and waters we all depend upon for survival, leaving our children and grandchildren with a very different world.