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discov5_lecppt_Ch25
discov5_lecppt_Ch25

... • Long-term and large-scale changes in the state of Earth’s climate are broadly known as climate change • As a result of climate change, satellite images show that Arctic sea ice has been declining by 2.7 percent per decade since 1978, sea levels have been rising, and the pH of the world’s oceans ha ...
Global Warming
Global Warming

... • Therefore, the protocol is not legally binding in the U.S. and we do not need to abide by it • The U.S. is the only developed country that has not ratified the Kyoto Protocol ...
Human Influence on Weather
Human Influence on Weather

... – Ozone “hole” is an area over the south pole where stratospheric ozone levels have drastically fallen – Atmospheric conditions (extreme cold, polar vortex) lead to efficient ozone destruction there ...
What is methane`s contribution to global warming?
What is methane`s contribution to global warming?

... Skeptical Science explains the s cience of global warming and examines climate mis information through the lens of peer-reviewed res earch. The webs ite won the Aus tralian Mus eum 2011 Eureka Prize for the Advancement of Climate Change Knowledge. Members of the Skeptical Science team have authored ...
Hiatus in context
Hiatus in context

... Global mean warming at the Earth’s surface has been slow over the past 15 years or so, but climate change, in the broader sense, has not. Since the late 1990s, summer sea ice extent in the Arctic has marched relentlessly from one record retreat to the next1, extremely hot periods over land have beco ...
Everybody`s Talking About Climate Change
Everybody`s Talking About Climate Change

... What’s going on? Could it be Climate Change? ...
Env_Prior_Net - Department of Atmospheric and Oceanic Sciences
Env_Prior_Net - Department of Atmospheric and Oceanic Sciences

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Planet at its hottest in 115,000 years thanks to climate change
Planet at its hottest in 115,000 years thanks to climate change

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Climate Change, Greenhouse Gases, and the Livestock Industry
Climate Change, Greenhouse Gases, and the Livestock Industry

... CLIMATE CHANGE • Any significant change in the measures of climate lasting for an extended period of time • Includes major changes in temperature, precipitation, or wind patterns, among other effects • Occurs over several decades or longer ...
Book 2
Book 2

... and debates about the issues associated with climate change arise because there are difficulties in predicting an exact atmospheric response to the many changing stimuli that are possible, especially the impact of human activities. ...
Factors Affecting Climate Change
Factors Affecting Climate Change

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carbon and nitrogen cycle - National Center for Atmospheric Research
carbon and nitrogen cycle - National Center for Atmospheric Research

... men the means to poison and mutilate one another. In time of peace it has made our lives hurried and uncertain. It has enslaved us to machines. The chief objective of all technological effort must be concern for mankind. Never forget this when you are pondering over your diagrams and equations!" Ein ...
Sample Organizational Statement on Climate Change
Sample Organizational Statement on Climate Change

... The Intergovernmental Panel on Climate Change (IPCC) concluded in its 5th Assessment Report, Climate Change 2013: The Physical Science Basis, that "Warming of the climate system is unequivocal" and "It is extremely likely that human influence has been the dominant cause of the observed warming since ...
Part 1-The Rural Context (JWilliams)
Part 1-The Rural Context (JWilliams)

... Lower increases in temperature in maritime environments Precipitation increases in high latitudes (temperate) but a drying in mid-latitudes (sub-tropics) over Asia Equatorial tropical zone – uncertain but little mean change expected No increase in cyclone frequency but intensity could increase by 10 ...
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... stratospheric ozone layer. As a result of this agreement, consumption of various CFCs has decreased worldwide by as much as 40 percent from 1986 levels. V nfortunately, many of the proposed substitutes for these chemicals, while ozone friendly, are also very strong greenhouse gases, 1,000s of times ...
GLOBAL WARNING by Michael Le Page
GLOBAL WARNING by Michael Le Page

... That contrasts with the 2007IPCC report, which predicted that if global temperatures rose 1.5°C or more above pre-industrial levels, greater warmth and higher CO2 levels would increase yields, at least in temperate regions, Only warming of more than 3.5°C was expected to lead to a big drop in produ ...
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... 2100, 2 doubling since pre-industrial level, first doubling by 2050. From 1D, radiative-convective CM: doubling CO2 increases global temperature by 2.5ºC (with H2O feedback), doubling it twice can lead to an increase of 5ºC (9ºF) over the next century. ...
EPA Climate Change Science Factsheet
EPA Climate Change Science Factsheet

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“The Dangers of Global Warming,” by Ana Martinez
“The Dangers of Global Warming,” by Ana Martinez

... Global warming is a controversial topic, which is widely debated amongst the public. Many argue that global warming does not exist, but scientist oppose. Scientist state that global warming is the gradual warming of the earth’s atmosphere, and can be seen through the climate change. Global warming e ...
Global Climate Change
Global Climate Change

... over its 4.6 billion year history The relatively recent change, especially in the addition of greenhouse gases (GHGs) FROM BURNING FOSSIL FUELS, has been VERY rapid. ...
Intro to climate system
Intro to climate system

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Climate Change and Global Warming Quiz
Climate Change and Global Warming Quiz

... 2. Water vapour and clouds in our atmosphere also contribute to the ‘greenhouse effect’. TRUE In fact, water vapour is responsible for more of the greenhouse effect that warms our planet than any other gas. ...
OCTOBER 26, 03:23 EDT
OCTOBER 26, 03:23 EDT

... problem and it is with us and we are going to have to take this into account in our future planning,'' said Kevin Trenberth, head of climate analysis section at the National Center for Atmospheric Research in Boulder, Colo. Equally significant, is the conclusion in the new assessment that if greenho ...
Climate Change Glossary
Climate Change Glossary

... albedo: The amount of light reflected off of an object on a scale from 0-1; white has an albedo of 1 while black has an albedo of 0. blackbody: an object that absorbs all of the radiation that hits it. climate system: the way the physical atmosphere, land, and ocean interact with the Earth’s biosphe ...
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Climate change feedback



Climate change feedback is important in the understanding of global warming because feedback processes may amplify or diminish the effect of each climate forcing, and so play an important part in determining the climate sensitivity and future climate state. Feedback in general is the process in which changing one quantity changes a second quantity, and the change in the second quantity in turn changes the first. Positive feedback amplifies the change in the first quantity while negative feedback reduces it.The term ""forcing"" means a change which may ""push"" the climate system in the direction of warming or cooling. An example of a climate forcing is increased atmospheric concentrations of greenhouse gases. By definition, forcings are external to the climate system while feedbacks are internal; in essence, feedbacks represent the internal processes of the system. Some feedbacks may act in relative isolation to the rest of the climate system; others may be tightly coupled; hence it may be difficult to tell just how much a particular process contributes. Forcings, feedbacks and the dynamics of the climate system determine how much and how fast the climate changes. The main positive feedback in global warming is the tendency of warming to increase the amount of water vapor in the atmosphere, which in turn leads to further warming. The main negative feedback comes from the Stefan–Boltzmann law, the amount of heat radiated from the Earth into space changes with the fourth power of the temperature of Earth's surface and atmosphere.Some observed and potential effects of global warming are positive feedbacks, which contribute directly to further global warming. The Intergovernmental Panel on Climate Change's (IPCC) Fourth Assessment Report states that ""Anthropogenic warming could lead to some effects that are abrupt or irreversible, depending upon the rate and magnitude of the climate change.""
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