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Future change of the Indian Ocean basin
Future change of the Indian Ocean basin

... Total 20 CGCMs participated in CMIP5 are used in this study. Table 1 lists the model name, institution and horizontal resolution of atmospheric component. Two experiments are investigated. One is the historical run (i.e., the twentieth century run) from 1850 to 2005 and the other is the RCP 4.5 run ...
Identifying Uncertainties in Arctic Climate Predictions
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... and the temperature and humidity profiles in the atmosphere. The structures of both profiles are highly seasonal, and changes in the annual mean properties likely stem from a change in seasonality arising from a change in the forcings. The climate system has strong feedbacks with cloud cover control ...
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... a secondary mechanism: facilitation of sea-ice formation, which affects deep-water formation, disturbing the thermohaline circulation. In another sensitivity experiment, the role of the dynamic distribution of ...
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... (IPCC) concluded that warming is unequivocal, and “very likely” (with 90%95% probability than the 66%-90% probability in 2001) that warming is due to human activity.32 The effects of climate change include increase in global mean temperature [commonly referred to as global warming], increase in glob ...
Metropolitan District of Quito - Programa de las Naciones Unidas
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... Close inspection of the published residual graphs (difference between the observed sea level and the anticipated tides) reveals that a significant number of recorded extreme storm surge events fall within range of the upper 95% confidence limit. This is particularly the case with the Escuminac and S ...
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... Table 5. The present-day climate of Tshwane: Seasonal and annual totals of rainfall (mm). .............. 32 Table 6. The present-day climate of Tshwane: Seasonal and annual averages for minimum, maximum and mean daily temperatures (°C) over Tshwane. These averages were calculated over the period 196 ...
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... planning policies and strategies can trigger adaptation action across all sectors and geographic regions. 2.2.1 Defining adaptation IPCC Assessment defines adaptation as "Adjustment in natural or human systems in response to actual or expected climatic stimuli or their effects, which moderates harm ...
The Economic Cost of Climate Change in Africa
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... Below is a short introduction to this report’s main findings and recommendations. ...
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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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