DocuWatch on Facebook
Art America Britain History Science Societies War Shop
DocuWatch

After The Warming

« A World Without Water

Age Of Stupid »

Description

From Wikipedia

After The Warming

Global warming is the increase in the average temperature of Earth's near-surface air and oceans since the mid-20th century and its projected continuation. Global surface temperature increased 0.74 Â± 0.18 Â°C (1.33 Â± 0.32 Â°F) between the start and the end of the 20th century. The Intergovernmental Panel on Climate Change (IPCC) concludes that most of the observed temperature increase since the middle of the 20th century was very likely caused by increasing concentrations of greenhouse gases resulting from human activity such as fossil fuel burning and deforestation. The IPCC also concludes that variations in natural phenomena such as solar radiation and volcanic eruptions had a small cooling effect after 1950. These basic conclusions have been endorsed by more than 40 scientific societies and academies of science, including all of the national academies of science of the major industrialized countries.

Climate model projections summarized in the latest IPCC report indicate that the global surface temperature is likely to rise a further 1.1 to 6.4 Â°C (2.0 to 11.5 Â°F) during the 21st century. The uncertainty in this estimate arises from the use of models with differing sensitivity to greenhouse gas concentrations and the use of differing estimates of future greenhouse gas emissions. Most studies focus on the period up to the year 2100. However, warming is expected to continue beyond 2100 even if emissions stop, because of the large heat capacity of the oceans and the long lifetime of carbon dioxide in the atmosphere.

An increase in global temperature will cause sea levels to rise and will change the amount and pattern of precipitation, probably including expansion of subtropical deserts. Warming is expected to be strongest in the Arctic and would be associated with continuing retreat of glaciers, permafrost and sea ice. Other likely effects include changes in the frequency and intensity of extreme weather events, species extinctions, and changes in agricultural yields. Warming and related changes will vary from region to region around the globe, though the nature of these regional variations are uncertain.

Political and public debate continues regarding global warming, and what actions (if any) to take in response. The available options are mitigation to reduce further emissions; adaptation to reduce the damage caused by warming; and, more speculatively, geoengineering to reverse global warming. Most national governments have signed and ratified the Kyoto Protocol aimed at reducing greenhouse gas emissions.

Tags

Other videos in channel "Planet":

A World Without Water A World Without Water After The Warming After The Warming Age Of Stupid Age Of Stupid
Antarctica Antarctica Death of the Oceans Death of the Oceans
Disaster At Death Coast Disaster At Death Coast Earth Story Earth Story Earth's Invisible Shield Earth's Invisible Shield
El Niño El Niño Europe A Natural History Europe A Natural History
Flow: For The Love Of Water Flow: For The Love Of Water Freak Wave Freak Wave Global Dimming Global Dimming
Global Weirding Global Weirding Great Discoveries - Earth Sciences Great Discoveries - Earth Sciences Greenhouse Effect - (1988) Greenhouse Effect - (1988)
Hot Planet? Hot Planet? How Earth Made Us How Earth Made Us How the Earth was Made How the Earth was Made
How the Earth Works - Lecture How the Earth Works - Lecture Invaders From The Sea Invaders From The Sea Japan Earthquake Japan Earthquake
Jetstream Jetstream Journeys from the Centre of the Earth Journeys from the Centre of the Earth Killer Algae Killer Algae
Killer Lakes Killer Lakes Last Days On Earth Last Days On Earth Lightning: Nature Strikes Back Lightning: Nature Strikes Back
Magnetic Storm Magnetic Storm Master of the Ionisphere Master of the Ionisphere Measuring the Roof of the World - (1991) Measuring the Roof of the World - (1991)
Mega Tsunami - Wave Of Destruction Mega Tsunami - Wave Of Destruction Men Of Rock Men Of Rock Miracle Planet Miracle Planet
Planet Earth - The Living Machine Planet Earth - The Living Machine Planet In Peril Planet In Peril Snowball Earth Snowball Earth
The 11th Hour The 11th Hour The Big Chill The Big Chill The Climate Wars The Climate Wars
The Core The Core The Day the Earth Nearly Died The Day the Earth Nearly Died The Day The Oceans Boiled The Day The Oceans Boiled
The Day The Wave Came The Day The Wave Came The Living Planet - The Building of the Earth The Living Planet - The Building of the Earth The Living Sea The Living Sea
The Lost World of Lake Vostok The Lost World of Lake Vostok The Man Who Moved The Mountains The Man Who Moved The Mountains The Next Megaquake The Next Megaquake
The Power Of The Planet The Power Of The Planet Volcano Hell Volcano Hell What's Killing The Sea Otters? What's Killing The Sea Otters?
Why Can't We Predict Earthquakes ? Why Can't We Predict Earthquakes ?    
Video channels
Videos in this channel
AdSense
Featured
Featured
Featured
Featured
Featured
Featured