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Climate change refers to the variation in the Earth's global climate or regional climates over time. It describes changes in the variability or average state of the atmosphere—or average weather—over time scales ranging from decades to millions of years. These changes may come from internal processes, be driven by external forces or, most recently, be caused by human activities.
In recent usage, especially in the context of environmental policy, the term "climate change" is often used to refer only to the ongoing changes in modern climate, including the rise in average surface temperature known as global warming. In some cases, the term is also used with a presumption of human causation, including in the United Nations Framework Convention on Climate Change (UNFCCC). The UNFCCC uses "climate variability" for non-human caused variations*.
For information on temperature measurements over various periods, and the data sources available, see temperature record. For attribution of climate change over the past century, see attribution of recent climate change.
More on [ Climate change ]
Weather :: Canada
Global Warming
RT @NIACEHQ: Attend free seminar raising awareness of climate change and implications for individuals & communities: http://bit.ly/3A5ULK
CatherineDunn8 (Catherine Dunn) Mon, 23 Nov 2009 19:50:02 -0000
RT @NIACEHQ: Attend free seminar raising awareness of climate change and implications for individuals & communities: http://bit.ly/3A5ULK
RT @anuvo: The Next @MunkDebate on Dec 1: http://bit.ly/5flHf0 Topic: Climate change is mankind's defining crisis and demands a commensu ...
j_ling (Jocelyn Ling) Mon, 23 Nov 2009 19:49:45 -0000
RT @anuvo: The Next @MunkDebate on Dec 1: http://bit.ly/5flHf0 Topic: Climate change is mankind's defining crisis and demands a commensu ...
RT @World_Wildlife: Climate Change Puts Trillions of Dollars in Assets at Risk Along U.S. Coasts http://bit.ly/8dYndv
EcoStrip (EcoStrip, Inc.) Mon, 23 Nov 2009 19:48:41 -0000
RT @World_Wildlife: Climate Change Puts Trillions of Dollars in Assets at Risk Along U.S. Coasts http://bit.ly/8dYndv
EU urged to 'storm the final bridge' on climate change http://www.theparliament.com/no_cache/latestnews/news-article/newsarticle/eu
bromotion (BROmotion Consult) Mon, 23 Nov 2009 19:48:30 -0000
EU urged to 'storm the final bridge' on climate change http://www.theparliament.com/no_cache/latestnews/news-article/newsarticle/eu
WWF - Press Release - Climate Change Puts Trillions of Dollars in Assets at Risk Along U.S. Coasts: http://bit.ly/5hHp0G via @addthis
rorylane (rorylane) Mon, 23 Nov 2009 19:48:28 -0000
WWF - Press Release - Climate Change Puts Trillions of Dollars in Assets at Risk Along U.S. Coasts: http://bit.ly/5hHp0G via @addthis
RT @GaianCollective Oceans rising faster than expected as climate change exceeds grimmest models http://bit.ly/6Xi1yQ
dolphincode (KJ ) Mon, 23 Nov 2009 19:48:19 -0000
RT @GaianCollective Oceans rising faster than expected as climate change exceeds grimmest models http://bit.ly/6Xi1yQ
Canadian Foundation for Climate and Atmospheric Sciences - Funds research that improves the scientific understanding of processes and predictions. Provides description of services, projects and links.
Climate Change - Government of Canada web site provides background information and resources on global climate change. Issues, actions and resources.
Meta Description: [ On the Government of Canada Climate Change web site you can learn about the science, impacts and adaptation to climate change and how you can take action by reducing your greenhouse gas emissions. Take action on climate change! ]
Greenhouse Gas Action Guide - Easy actions to reduce greenhouse gas emissions, for municipalities and first nations. Provides listing of resources and programs available.
Meta Description: [ Easy actions to reduce greenhouse gas emissions, for municipalities and first nations in British Columbia. ]
National Climate Change Secretariat - Created to inform Canadians about the process of developing a national implementation strategy on climate change. Provides information, news and resources.
Stop Climate Change - Canadian Climate Quiz and actions to take for clean air. One of the major programs of the David Suzuki Foundation.
Meta Description: [ The David Suzuki Foundation is a science-based Canadian environmental organization, working to protect the balance of nature and our quality of life, now and for future generations. ]
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