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City of Long Beach Climate Resiliency Assessment Report
City of Long Beach Climate Resiliency Assessment Report

... priorities can be reviewed to address adaptation sooner rather than later, while there is still an opportunity to be proactive on matters of urgency. Each climate threat has its own potential detrimental effect on the City; taken together they magnify risks to citizens, the business community, and C ...
American Climate Prospectus - Goldman School of Public Policy
American Climate Prospectus - Goldman School of Public Policy

... possibilities of major abrupt change cannot be ruled out. Such tipping points could make our most extreme projections more likely than we estimate, though unexpected stabilizing feedbacks could also act in the opposite direction. Physical climate projections The scientific community has recently rel ...
Carbon dioxide and climate impulse response functions for the
Carbon dioxide and climate impulse response functions for the

... Received: 24 July 2012 – Published in Atmos. Chem. Phys. Discuss.: 9 August 2012 Revised: 25 January 2013 – Accepted: 11 February 2013 – Published: 8 March 2013 ...
cliMAtE chANGE ANd cANAdA`S FOREStS
cliMAtE chANGE ANd cANAdA`S FOREStS

... future climate change will be further increases in the frequency and severity of extreme weather events and disturbances. Changes in productivity, species composition, and age- class distribution are also expected. Moisture and temperature are key factors affecting productivity. Productivity is like ...
Draft Guidelines on Climate Change and Natura 2000
Draft Guidelines on Climate Change and Natura 2000

... biodiversity, as well as our economic and social interests. Also, the new EU biodiversity strategy, ‘Our life insurance, our natural capital: an EU biodiversity strategy to 2020’, underlines the importance of addressing climate change in the EU. In order to improve exchange of information on climate ...
gov commision report
gov commision report

... projects that, to avoid catastrophic changes to the world’s climate, greenhouse gas (GHG) emissions will need to be reduced by 25% below the 1990 level by 2020, and 80% below the 1990 level by 2050. While the IPCC predicts that overall changes to the world’s climate will be extremely damaging, it al ...
doc - Eldis
doc - Eldis

... responses, paying particular attention to the challenges and opportunities that climate change presents in the struggle for gender equality. It advocates for an approach in which women and men have an equal voice in decision-making on climate change and broader governance processes and are given equ ...
Assessing climate change impacts, sea level rise and storm surge risk in port cities: a case study on Copenhagen
Assessing climate change impacts, sea level rise and storm surge risk in port cities: a case study on Copenhagen

... Denmark. However, these estimates are considered highly uncertain and will not be used in this study. Moreover, any local vertical land movements would need to be considered to estimate the overall mean sea level change. As Copenhagen is experiencing uplift, this will offset a portion of the increas ...
What happens in the arctic doesn`t stay in the arctic
What happens in the arctic doesn`t stay in the arctic

... a reality for us all. Arctic ice, the northern cryosphere, is an integral part of the earth’s climate systems and has undergone rapid changes over the last century. The Arctic region has warmed more than two times as fast as any other area of the world in the previous few decades and is known to be ...
Geoengineering the climate: science, governance
Geoengineering the climate: science, governance

... Climate change is happening. Its impacts and costs will be large, serious, and unevenly spread. The impacts may be reduced by adaptation, and moderated by mitigation, especially by reducing emissions of greenhouse gases. However, global efforts to reduce emissions have not yet been sufficiently succ ...
Experiment Earth?
Experiment Earth?

... context of the continuing need for mitigation, considering the moral hazard and opportunity costs faced in research decisions. 3. Consider participants’ concerns around perceived ‘naturalness’ in discussions about future geoengineering research and deployment. 4. Take account of participants’ specif ...
Plant phenotypic plasticity in a changing climate
Plant phenotypic plasticity in a changing climate

... evolutionary, physiological and molecular perspectives together, we hope to provide clear directives for future research and stimulate cross-disciplinary dialogue on the relevance of phenotypic plasticity under climate change. Climate change and plant adaption Climate change is altering the environm ...
Read the Adaptation Strategy
Read the Adaptation Strategy

... been attributed to the increasing levels of carbon dioxide (CO2) and other greenhouse gases (GHGs) in the atmosphere, which have set in motion a series of changes in the planet’s climate system. Far greater changes are inevitable not only because emissions will continue, but also because CO2 stays i ...
climate change, migration and human security in southeast asia
climate change, migration and human security in southeast asia

... tanks, government agencies and non-governmental organisations have produced reports on climate change, conflict and national security in which they argue not only that a substantial proportion of humanity could be “on the move” as a result of climate change but that migration could be a major factor ...
Drought and warming induced changes in P and K concentration
Drought and warming induced changes in P and K concentration

... Biomass P concentration . Sclerophylly . Warming . Water stress ...
Diverse policy implications for future ozone and surface UV in a
Diverse policy implications for future ozone and surface UV in a

... climatologies from the transient simulations and the concentrations of CO2, N2O, methane, and total chlorine shown in Table 1. Here we focus on the RCP 2.6 and 8.5 scenarios, since the stratospheric ozone response to RCP 4.5 falls in between these extreme scenarios (Figure 1). For the RCP 2.6 future ...
Plant phenotypic plasticity in a changing climate
Plant phenotypic plasticity in a changing climate

... evolutionary, physiological and molecular perspectives together, we hope to provide clear directives for future research and stimulate cross-disciplinary dialogue on the relevance of phenotypic plasticity under climate change. Climate change and plant adaption Climate change is altering the environm ...
Working Paper 12C
Working Paper 12C

... CSIRO advises that the information contained in this publication comprises general statements based on scientific research. The reader is advised and needs to be aware that such information may be incomplete or unable to be used in any specific situation. No reliance or actions must therefore be mad ...
NBER WORKING PAPER SERIES A PRECAUTIONARY TALE OF UNCERTAIN TAIL FATTENING
NBER WORKING PAPER SERIES A PRECAUTIONARY TALE OF UNCERTAIN TAIL FATTENING

... A striking feature of the economics of climate change is that worst-case scenarios are both highly unsure and non-negligible. Deep structural uncertainty about what might conceivably go awry with the planet is coupled with essentially unlimited downside liability on the ultimate extent of possible g ...
Queensland`s biodiversity under climate change:
Queensland`s biodiversity under climate change:

... CSIRO advises that the information contained in this publication comprises general statements based on scientific research. The reader is advised and needs to be aware that such information may be incomplete or unable to be used in any specific situation. No reliance or actions must therefore be mad ...
The Legal and Economic Case Against the Paris Climate Treaty
The Legal and Economic Case Against the Paris Climate Treaty

... edge. Obama pledged to reduce U.S. emissions by 26 to 28 percent below 2005 levels by 2025, with deeper cuts every five years thereafter. That is already significant, but he went much further. He also committed the United States to rapidly phase out fossil fuels over 35 years.4 Therefore, President ...
Whole of Island Approach - Abaiang Atoll, Kiribati
Whole of Island Approach - Abaiang Atoll, Kiribati

The Carbon Neutral Myth
The Carbon Neutral Myth

... the scientific basis of offsetting, showing that it is not possible to equate absorption of atmospheric CO2 by trees with the fossil CO2 emitted from burning fossil fuels. It also examines problems with the impermanence of carbon storage in plantations, and how hypothesising what emissions have been ...
Assessing the Effects of Climate and Socioeconomic Factors on
Assessing the Effects of Climate and Socioeconomic Factors on

... research has focused on the impacts of global climate change and population characteristics on both endemic and epidemic vector-borne diseases. Sutherst (2004) offers a summary of the complex interrelationship between global climate change, localized weather variability, biological adaptability, pop ...
Marine Net Primary Production
Marine Net Primary Production

... Net primary production (NPP) is the formation of organic material from inorganic compounds minus the respiratory losses of the photosynthetic organisms. Global marine annual NPP provides an estimate of the organic material available to fuel the ocean’s food webs for the year. The majority of NPP in ...
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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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