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W8-6: Climate Change and Food Security
W8-6: Climate Change and Food Security

report outlines possible effects of warming on california
report outlines possible effects of warming on california

... UC Davis agricultural economics professor Richard Howitt estimates that the Central Valley's farm acreage will shrink by roughly 1.5 million acres, or 20%, by 2050. Revenue losses will be less steep -- about 10% or $3 billion a year -- thanks to shifts to more profitable fruits, vegetables and nuts. ...
The Economics of Sustainability
The Economics of Sustainability

... The three ‘Es’ of policy making • Effectiveness: Will they achieve the required reduction in emissions? • Efficiency: Are they the least costly way for society as a whole to reduce emissions? • Equity: Will the suite of policies deliver reductions in a way that’s considered fair? ...
Climate-Change Challenge Today
Climate-Change Challenge Today

... wave in southern Europe, which affected parts of Spain, Italy, and France and was blamed for between 35,000 and 70,000 premature deaths. Analyses have indicated that this was a 1-in-200-year event before humans started to increase the global-average surface temperature and was a 1-in-100-year event ...
in Nigeria by
in Nigeria by

... people to relate the issue to everyday living. It is also important to point out individual solutions  Communication strategies vary from one group to another, use pictorials for consequences  We also noticed that Climate issue is yet not on the media’s agenda ...
Document
Document

... FEAR APPEAL M1: The Intergovernmental Panel on Climate Change (www.ipcc.ch) concludes in its 4th Assessment Report that global warming has been occurring for some time (at least since the early 1800’s), and has very likely been being driven by human activities. The report suggests that increased pro ...
Climate Expedition - Ohio Sea Grant
Climate Expedition - Ohio Sea Grant

... 1. What kind of information does the width of growth rings give scientists? ...
Keith_Brander Iimpacts of climate change
Keith_Brander Iimpacts of climate change

... [email protected] ...
Make a difference with the facts about climate change
Make a difference with the facts about climate change

... volcanic eruptions in 1963, 1982 and 1991 led to short periods of cooling. Throughout the century, CO2 increased steadily and has been shown to be responsible for most of the warming in the second half of the century. As well as producing CO2, burning fossil fuels also produces small particles calle ...
Climate Science Lecture 2
Climate Science Lecture 2

... ii) Earth’s orbital changes – variations in Earth’s position relative to the Sun (1) Causes changes in the radiation received and absorbed by Earth (2) Rate - 10s to 100s of thousands of years iii) Variations in the Sun’s energy output (1) The Sun has slowing strengthened since it formed 6 BYA (2) S ...
Week 1 Climate Change Presentation Introduction
Week 1 Climate Change Presentation Introduction

... Warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia. The atmosphere and ocean have warmed, the amounts of snow and ice have diminished, sea level has risen, and the concentrations of greenhouse gases have increas ...
Wikipedia `Climate change mitigation`
Wikipedia `Climate change mitigation`

... and rising global average sea level. For volcanoes and earthquakes, the retreat of glaciers and ice caps can cause increased volcanism and seismicity due to reduced confining pressure exerted on the Earth crust. The oceans serve as a sink for carbon dioxide and increased levels of CO2 have led to oc ...
Sondervortrag - ENGAGE - Geomorphologische Systeme und
Sondervortrag - ENGAGE - Geomorphologische Systeme und

... Emergence is a characteristic of dynamic systems where the large-scale behaviour of the system is effectively independent of the behaviour of the smallscale components of that system. Scientific attempts to unravel the complexity of complex systems have tended to follow reductionist paths. However, ...
Climate Change: Why dire climate warnings boost scepticism
Climate Change: Why dire climate warnings boost scepticism

... climate change, a common feature of warning messages, might be viewed as unfair because children have not caused global warming” Ex. “The first showed a train speeding towards a small girl as a metaphor for the impending catastrophe that awaits the world's children. The second showed anxious childre ...
Greenhouse Effect Webquest
Greenhouse Effect Webquest

... You have a half of a class period to work on this computer webquest. Please keep track of your time as other students may be signed up to use the computer after you. Use the websites listed to answer the questions that follow. Go to the following website http://www.epa.gov/climatechange/ click on “b ...
Ch12 Climate Change and Humans
Ch12 Climate Change and Humans

...  Used for refrigerants, coolants, fire extinguishing ;  Concern: thin the ozone layer, global warming potential is 12000 to 15000x greater than CO2 ...
Climate diplomacy under related international processes other than
Climate diplomacy under related international processes other than

... international health agreement - need to integrate climate change in all policy levels ...
PowerPoint Presentation - ESC 110: Global Climate Change
PowerPoint Presentation - ESC 110: Global Climate Change

... • How will the climate change and how much will the climate change? • Is the change natural or due to human activities? • If there is climate change, will it affect me? ...
Ozone Depletion and Global warming ppt angie
Ozone Depletion and Global warming ppt angie

... once emitted to the atmosphere, these compounds could significantly deplete the stratospheric ozone layer that shields the planet from damaging UV-B radiation. ...
Procon.org Climate change overview - LaPazColegio2010-2011
Procon.org Climate change overview - LaPazColegio2010-2011

... substantially change the earth’s climate. They contend that our forests and oceans are capable of absorbing these small increases, and that 20th century warming has resulted from natural processes including fluctuations in the sun's heat and ocean currents. They say that global climate change is bas ...
Letter to Sen. Maria Cantwell and Sen. Susan Collins
Letter to Sen. Maria Cantwell and Sen. Susan Collins

... (CLEAR) Act. We welcome the opportunity this creates to have a more careful and constructive national dialogue on how to best meet the challenges presented by climate change. The CLEAR Act addresses many of the shortcomings contained in House-passed climate legislation, H.R. 2454 and the Kerry-Boxer ...
Ten Reasons to Oppose Harmful Climate
Ten Reasons to Oppose Harmful Climate

... 3. While human addition of greenhouse gases, particularly carbon dioxide (CO2), to the atmosphere may slightly raise atmospheric temperatures, observational studies indicate that the climate system responds more in ways that suppress than in ways that amplify CO2’s effect on temperature, implying a ...
Testing the hypothesis of dangerous human
Testing the hypothesis of dangerous human

... uniformly “no” as tested against datasets that span time scales of hundreds, thousands, tens and hundreds of thousands, and millions of years. TEST 3 asks whether changes in the presumed cause (CO2 increase) occur before changes in the presumed effect (temperature increase). Data from Antarctic ice ...
What`s new since IPCC AR4, Dr. Rajendra - Ny
What`s new since IPCC AR4, Dr. Rajendra - Ny

... 1 million people lost their homes ...
Human Fingerprints - Union of Concerned Scientists
Human Fingerprints - Union of Concerned Scientists

... Volcanic events and some types of humanmade pollution, both of which inject sunlightreflecting aerosols into the atmosphere, lower temperature and are examples of “negative” forcings or drivers. Natural climate drivers include the sun’s energy output, aerosols from volcanic activity, and changes in ...
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Attribution of recent climate change



Attribution of recent climate change is the effort to scientifically ascertain mechanisms responsible for recent changes observed in the Earth's climate, commonly known as 'global warming'. The effort has focused on changes observed during the period of instrumental temperature record, when records are most reliable; particularly in the last 50 years, when human activity has grown fastest and observations of the troposphere have become available. The dominant mechanisms (to which recent climate change has been attributed) are anthropogenic, i.e., the result of human activity. They are: increasing atmospheric concentrations of greenhouse gases global changes to land surface, such as deforestation increasing atmospheric concentrations of aerosols.There are also natural mechanisms for variation including climate oscillations, changes in solar activity, and volcanic activity.According to the Intergovernmental Panel on Climate Change (IPCC), it is ""extremely likely"" that human influence was the dominant cause of global warming between 1951 and 2010. The IPCC defines ""extremely likely"" as indicating a probability of 95 to 100%, based on an expert assessment of all the available evidence.Multiple lines of evidence support attribution of recent climate change to human activities: A basic physical understanding of the climate system: greenhouse gas concentrations have increased and their warming properties are well-established. Historical estimates of past climate changes suggest that the recent changes in global surface temperature are unusual. Computer-based climate models are unable to replicate the observed warming unless human greenhouse gas emissions are included. Natural forces alone (such as solar and volcanic activity) cannot explain the observed warming.The IPCC's attribution of recent global warming to human activities is a view shared by most scientists, and is also supported by 196 other scientific organizations worldwide (see also: scientific opinion on climate change).
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