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Climate Change and British Woodland
Climate Change and British Woodland

... warming of some 3–5 ºC over the coming century. This magnitude and rate of change has not occurred since before the last ice age. The implications of this level of temperature change are further highlighted by the observation that, during the last ice age, mean northern hemisphere temperatures were ...
Rising vulnerability in the global food system: environmental pressures and climate change
Rising vulnerability in the global food system: environmental pressures and climate change

... global food supply must rise 70 percent to meet the population’s dietary needs, and that the increase needed in developing countries amounts to 100 percent. However, achieving food security for a rapidly-rising population is not the only factor behind the necessary growth. Agriculture will increasin ...
From Mars and Venus Down to Earth: Understanding the
From Mars and Venus Down to Earth: Understanding the

... To substantiate our argument, let us review the state of greenhouse gas emissions in the US and Europe. Under the Framework Convention, the US made a voluntary commitment to return its greenhouse gas emissions to 1990 levels by the start of the new millennium. However, US emissions in 1999 were 11.7 ...
the kyoto protocol revisited
the kyoto protocol revisited

... climate change authorities, puts it: “We are not in a position to confidently attribute past climate change to CO2 or to forecast what the climate will be in the future…. We simply do not know what relation, if any, exists between global climate changes and water vapour, clouds, storms, hurricanes a ...
Burbank - Climate Change: Operational and Land Use Strategies
Burbank - Climate Change: Operational and Land Use Strategies

... • “More integrated transport and spatial planning policies might contain demand for motorized transport.” • Mode shifts … cannot … form the corner-stone of effective CO2 abatement policy and the prominence given to modal shift policies is at odds with indications that most modal shift policies achie ...
PDF
PDF

... Using predicted increases in local average THI loads, and the estimated relationship between THI load and dairy productivity, ERS researchers predicted how climate change will likely affect milk production. Depending on the climate model used, the study found that a warmer climate in 2030 will reduc ...
reducing black carbon emissions
reducing black carbon emissions

... the albedo – or reflectivity – of these surfaces, and increases the rate of melting. When these surfaces melt, the darker water or land exposed below absorbs more incoming sunlight, causing additional warming.iii James Hansen of the US National Aeronautics and Space Administration (NASA) has estimat ...
Americans` Knowledge of Climate Change
Americans` Knowledge of Climate Change

... perhaps unsurprising that they lack detailed knowledge about the issue. Instead, these results likely reflect the unorganized and sometimes contradictory fragments of information Americans have absorbed from the mass media and other sources. Further, many of these questions are outside the everyday ...
This article was originally published in a journal published by
This article was originally published in a journal published by

... illustrates the magnitude of this conversion from the natural to current landscape. India, for example, has transformed from a large forested subcontinent to vast areas of agriculture today. Western Europe and the midwest of the United States bear little resemblance to their original landscape. As p ...
Sand lizard (Lacerta agilis) phenology in a warming world
Sand lizard (Lacerta agilis) phenology in a warming world

... regional climate change, microhabitat buffering) that dictate its sensitivity, resilience, and capacity to adapt [15]. By adapting a population can track environmentally induced shifts in optimal phenotype and hence avoid a reduction in reproductive rate. This can be achieved by dispersal to more su ...
Lake Baikal as possible sentinel of the Climate Change
Lake Baikal as possible sentinel of the Climate Change

... SILOW Eugene Scientific research institute of Biology, Irkutsk State University, POBox 24, Irkutsk-3, 664003, Russia ...
Ecosystems
Ecosystems

... Further understanding needed: How do ecosystems respond to continuously changing conditions (esp. on human time scales)? (Mt/Ag/EnSc/EnSt 404/504 - Global Change) ...
reproduction and development in wildlife Impacts of climate change
reproduction and development in wildlife Impacts of climate change

... questions is limited by many factors, not least the difficulty of making forecasts from incomplete data, about biological systems in which there are many variables, and in a climate of ever changing baselines. It is not just the magnitude of environmental pressures that poses a threat to the surviva ...
Climate prediction: a limit to adaptation?
Climate prediction: a limit to adaptation?

Climate Change and Variability
Climate Change and Variability

... up to more than 1400 mm. Maps are provided of the average patterns of Tasman District rainfall. Two natural fluctuations leading to year-to-year variations are the El Niño-Southern Oscillation (ENSO), and the Interdecadal Pacific Oscillation (IPO). These factors also lead to fluctuations in sea lev ...
Vol.12, No.1, 2012
Vol.12, No.1, 2012

... vulnerable to human-induced ocean acidification. The rate at which aragonite surface concentration decreases in LOVECLIM and MIROC compares well with the rate of decrease recorded over the last 2 to 3 decades at several monitoring sites in the Pacific and the Atlantic. The observed decreases range b ...
Assessing climate risk to improve farm business management
Assessing climate risk to improve farm business management

... accordingly. As improved knowledge about climate and skills in seasonal climate forecasting help in managing uncertainty in farming, the opportunity to learn about them has a pivotal role for all involved in rural production (Banks 2004). The aim of this paper is to show that climate risk can be red ...
The geography of climate change: implications
The geography of climate change: implications

... largest are projected to experience temperatures within their currently observed range. Topoclimate variability will further increase the range of conditions experienced and needs to be incorporated in future analyses. Main Conclusions Spatial heterogeneity in climate, from mesoclimate to ...
Colloquium on Environmental Aspects of Aviation
Colloquium on Environmental Aspects of Aviation

... Hadley Centre for Climate Prediction and Research ...
Vol.3, No.1, 2003
Vol.3, No.1, 2003

... lies in the region where the Northern and Southern Hemisphere trade winds converge, the Intertropical Convergence Zone (ITCZ) — gives rise to deep convection and heavy rainfall. Studies over the past two decades have revealed that the El Niño-Southern Oscillation (ENSO) originates from an ocean-atmo ...
Pacific Islands Framework for Action on Climate Change
Pacific Islands Framework for Action on Climate Change

... In 2007 the Pacific Islands Leaders called on the international community to reach agreement urgently on an effective global response to deliver on the ultimate objective of the UNFCCC to avoid dangerous levels of interference with the climate system, including further commitments in the future by a ...
Droughts, floods and freshwater ecosystems: evaluating climate
Droughts, floods and freshwater ecosystems: evaluating climate

... modelling shows a decline in groundwater recharge of greater than 10% for more than 20% of the global land area by 2050, with the greatest impacts in arid or semiarid regions (Döll 2009). Groundwater recharge is expected to rise in some areas, which may be problematic where water tables already are ...
04 Morlot.P65
04 Morlot.P65

... policy as an input to goal-setting for global mitigation. We build on a recent proposal by Jacoby (2004; see Box 1) as well as other recent efforts in this area (OECD, 2004c; Corfee Morlot and Agrawala, 2004; Patwardhan et al., 2003; ECF and PIK, 2004; UK Defra, 2005), to begin to carefully consider ...
Global Change Science and Pedagogy
Global Change Science and Pedagogy

... understanding not only of the Earth's dynamic history and the forcing factors that caused the Earth environments to have specific spatial and physical characteristics over time, but you will gain a quantitative understanding of the scale and rapidity of recent global changes that are the result of h ...
Palaeoclimatic insights into future climate challenges
Palaeoclimatic insights into future climate challenges

... nor the variability of the climate are fully captured in some climate-change projections, such as the Intergovernmental Panel on Climate Change (IPCC) Summary for Policymakers. Because larger, faster and less-expected climate changes can cause more problems for economies and ecosystems, the palaeocl ...
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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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