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2011 Duffy
2011 Duffy

... No Room in the Ark? Climate Change and Biodiversity in the Pacific Islands of Oceania DAVID CAMERON DUFFY1 The islands of Pacific Oceania face unprecedented anthropogenic climate change within this century. Rising sea levels, increasing ocean acidification, warming land and sea temperatures, increas ...
submission for the carbon tax bill
submission for the carbon tax bill

... presentation sounds like something put together by Greenpeace activists and their legal department." Dr Chris Landsea: "I cannot in good faith continue to contribute to a process that I view as both being motivated by pre-conceived agendas and being scientifically unsound." Dr Richard Lindzen: "The ...
Eksterne relationer
Eksterne relationer

... There are many ways how climate change related effects might affect the fish resource: • Affect the level of recruitment, • Affect size and quality of the fish resource, • Lead to emigration or immigration of species in specified geographic areas, • Increase the natural variability, • Increase the s ...
Progress in Modeling the Impact of Land Cover Change on the Global Climate (PiPG - December 2006 Issue)
Progress in Modeling the Impact of Land Cover Change on the Global Climate (PiPG - December 2006 Issue)

... in both cycles. As forested areas are converted to grassland, the albedo of the surface is increased, the surface roughness is decreased, and the ability of the underlying soil and vegetation canopy to hold water is also decreased. These are indicated in black ink by ‘Bright’, ‘Smooth’ and ‘Dry Veg’ ...
Teacher Guide, Level 3
Teacher Guide, Level 3

... and Jen Lau from Michigan State University Research Background: Every day we add more greenhouse gases to our air by burning fossil fuels, such as oil, coal, and natural gas. Greenhouse gasses trap the sun’s heat, so adding more causes the Earth to heat up! What does that mean for the species on our ...
Consistency between planetary heat balance and ocean
Consistency between planetary heat balance and ocean

... m-2) and uncertainty of the individual surface energy balance components are more than an order of magnitude larger than the absolute amount of the Earth imbalance. 2. We need to evaluate consistencies between in-situ and reanalyses OHC and satellite observing systems (an inventory of changes in hea ...
Alien species in a warmer world: risks and opportunities
Alien species in a warmer world: risks and opportunities

... Founder population: a new population in a region, usually consisting of a small number of (here: introduced) individuals. Introduction/introduced: direct or indirect movement by human agency, of an organism outside its past or present natural range. Invasion/invasive: refers to established alien org ...
Defenders of Wildlife Merritt island CCP comments
Defenders of Wildlife Merritt island CCP comments

... Sensitive temperate and tropical seagrass populations decreased almost tenfold over the last 40 years (Orth et al 2006). This was likely due to a combination of biological, environmental, and extreme climatological events (all of which are expected to increase due to global warming), including dune ...
The Effects of Climate Change on Public Health and the Healthcare
The Effects of Climate Change on Public Health and the Healthcare

... Global Changes in Climate “Rising global temperatures and sea levels and declining snow cover over the past 150 years are the result of, and in turn contribute to, a number of long-term changes in climate, including increased arctic temperatures; widespread changes in precipitation amounts, ocean sa ...
Climate Change and Severe Weather
Climate Change and Severe Weather

... changes which may be linked to global warming and other severe climatic/weather events that are outside of the natural range of variation, and potentially can alter the composition of species in a given habitat as species die or move in response to these changes. These threats include increased floo ...
Act Now or Pay Later
Act Now or Pay Later

... At the UN COP21 climate summit in Paris in December 2015, a target was set to limit global temperature rise to below 2°C, and to pursue efforts to stay below the much safer limit of 1.5°C. However, the UN Environment Programme (UNEP)5 has estimated that based on achieving the emissions reductions ac ...
Dr. Craig Tweedie - NSTA Learning Center
Dr. Craig Tweedie - NSTA Learning Center

... 750 GT C •Vulnerable arctic soils: 350-900 GT C •Human C emissions: 5.4 GT C per year •1% loss arctic soil C = annual human C emissions. •Could equate to a global warming C.E. Tweedie capacity of 4-8°C. ...
european union climate funding for developing countries
european union climate funding for developing countries

... energy efficiency projects, as well as investing in adaptation measures. The EIB’s investment in climate action has been strengthened in recent years, including a significant increase in its support to developing countries to more than EUR 2 billion per year. It has a target of ensuring that at leas ...
UNFCCC Training Materials_Communication
UNFCCC Training Materials_Communication

... information on their vulnerability to the impacts of, and their adaptation to, climate change in key vulnerable areas. Information should include key findings, and direct and indirect effects arising from climate change, allowing for an integrated analysis of the country’s vulnerability to climate c ...
Climate change scenarios for Peru and Ecuador
Climate change scenarios for Peru and Ecuador

... The ECHAM climate model has been developed from the ECMWF atmospheric model (therefore the first part of its name: EC) and a comprehensive parameterisation package developed at Hamburg therefore the abbreviation HAM) which allows the model to be used for climate simulations. The model is a spectral ...
Impacts, Adaptations and Uncertainty in the face of Anthropogenic
Impacts, Adaptations and Uncertainty in the face of Anthropogenic

... extreme climate events in the boreal can damage trees comparably to that of the most destructive windstorms and hurricanes recorded anywhere. Wind related events may also have consequences for other forest disturbances such as fires and insect outbreaks. A warmer climate may be more conductive of ex ...
european union climate funding for developing countries
european union climate funding for developing countries

... energy efficiency projects, as well as investing in adaptation measures. The EIB’s investment in climate action has been strengthened in recent years, including a significant increase in its support to developing countries to more than EUR 2 billion per year. It has a target of ensuring that at leas ...
WMO GREENHOUSE GAS BULLETIN 2008 MAIN GREENHOUSE
WMO GREENHOUSE GAS BULLETIN 2008 MAIN GREENHOUSE

... 23 November 2009 (WMO) ­ Levels of most greenhouse gases continue to increase. In 2008, global  concentrations  of  carbon  dioxide,  methane  and  nitrous  oxide,  which  are  the  main  long­lived  greenhouse gases in the atmosphere, have reached the highest levels recorded since pre­industrial  t ...
Greenhouse gases - Aktuel Naturvidenskab
Greenhouse gases - Aktuel Naturvidenskab

... clouds in the atmosphere. Since the atmospheric temperature decreases the higher we get, greenhouse gases and cloud droplets, which are the same temperature as the surrounding atmosphere, emit lower temperature radiation than the planet’s surface. Due to the greenhouse effect, the radiation that Ear ...
PDF
PDF

... the idea of common wealth. It now appears that an important part of the common wealth of all humanity is the global atmospheric capacity to absorb greenhouse gasses without disastrous climate effects. Until the industrial revolution this capacity was never noticed, as it was in a balance in which gr ...
extreme events and climate change
extreme events and climate change

... Group I: incontestable evidence of climate change and its attribution to human intervention linking greenhouse gases to climate change. Group II: Impacts are undeniable and can be traced as additional stress sustainable development. Local impacts are aggravated by development, physical and structura ...
Climate Change and Forest Fire Potential in Russian and Canadian
Climate Change and Forest Fire Potential in Russian and Canadian

... climate regimes. SSR maps for the 1980s baseline data and the 2  CO2 scenarios for the four GCMs are shown in Figure 2. There is a strong similarity in the geographical pattern of fire severity for all models under a doubled CO2 climate, indicating that some confidence can be placed on the predicte ...
Going beyond aid effectiveness to guide the delivery of climate finance
Going beyond aid effectiveness to guide the delivery of climate finance

Effects of climate change on life history
Effects of climate change on life history

... While the Earth has experienced much climatic variability over historical time, current climatic changes differ in 2 important ways in terms of their negative impact on biodiversity and extinction rates. (1) The rate of change is generally considered to be unparalleled in the past 10 000 yr. The lat ...
The contribution of Portuguese agriculture to the climate
The contribution of Portuguese agriculture to the climate

... Across Europe, average wheat (Triticum aestivum L.) yields have markedly increased since the early 1960s, but rates of increase have been slower in southern countries (e.g. Portugal and Spain) when compared with the United Kingdom and France reflecting the impact of the warming and drought since the ...
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Scientific opinion on climate change



The scientific opinion on climate change is the overall judgment amongst scientists about whether global warming is happening, and if so, its causes and probable consequences. This scientific opinion is expressed in synthesis reports, by scientific bodies of national or international standing, and by surveys of opinion among climate scientists. Individual scientists, universities, and laboratories contribute to the overall scientific opinion via their peer-reviewed publications, and the areas of collective agreement and relative certainty are summarised in these high level reports and surveys.The scientific consensus is that the Earth's climate system is unequivocally warming, and that it is extremely likely (at least 95% probability) that humans are causing most of it through activities that increase concentrations of greenhouse gases in the atmosphere, such as deforestation and burning fossil fuels. In addition, it is likely that some potential further greenhouse gas warming has been offset by increased aerosols.National and international science academies and scientific societies have assessed current scientific opinion on global warming. These assessments are generally consistent with the conclusions of the Intergovernmental Panel on Climate Change, the IPCC Fourth Assessment Report summarized:Warming of the climate system is unequivocal, as evidenced by increases in global average air and ocean temperatures, the widespread melting of snow and ice, and rising global average sea level.Most of the global warming since the mid-20th century is very likely due to human activities.Benefits and costs of climate change for [human] society will vary widely by location and scale. Some of the effects in temperate and polar regions will be positive and others elsewhere will be negative. Overall, net effects are more likely to be strongly negative with larger or more rapid warming.The range of published evidence indicates that the net damage costs of climate change are likely to be significant and to increase over time.The resilience of many ecosystems is likely to be exceeded this century by an unprecedented combination of climate change, associated disturbances (e.g. flooding, drought, wildfire, insects, ocean acidification) and other global change drivers (e.g. land-use change, pollution, fragmentation of natural systems, over-exploitation of resources).Some scientific bodies have recommended specific policies to governments and science can play a role in informing an effective response to climate change, however, policy decisions may require value judgements and so are not included in the scientific opinion.No scientific body of national or international standing maintains a formal opinion dissenting from any of these main points. The last national or international scientific body to drop dissent was the American Association of Petroleum Geologists, which in 2007 updated its statement to its current non-committal position. Some other organizations, primarily those focusing on geology, also hold non-committal positions.
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