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ppt - Physical Oceanography at GSO
ppt - Physical Oceanography at GSO

... on seasonal and longer time scales and evaluate their predictability; Expand our capacity to predict short-term (seasonal to interannual) climate variability and search for ways to predict decadal variability; Better document the record of rapid climate changes in the past,as well as the mechanisms ...
Solar forcing of Holocene climate: New insights from a speleothem
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... Cross-spectral analysis of the ∆14C data and δ18O data (Fig. 3B) confirms that the two records have matching periodicities at 1533, 444, 170, 146, and 88 yr above the 95% confidence interval. The coherent peaks, within the bandwidth of the Welch window, are identical to the spectral peaks of the ∆14 ...
Cities, Climate Change, and The Big Opportunity
Cities, Climate Change, and The Big Opportunity

... Climate change is happening and its unfolding dangers have grabbed worldwide attention. Yet, the opportunities that exist within climate change debates to improve and transform some of the most vulnerable urban communities of the developing world are often overlooked. ...
Module 6 - Budget - Global Climate Change Alliance
Module 6 - Budget - Global Climate Change Alliance

... in the budgetary process  Are budget planning and expenditures being directed toward the appropriate priorities in view of adaptation and mitigation?*  Do recent changes in budget allocations and expenditures provide evidence of increased attention to adaptation to climate variability, disaster pr ...
The Fatal Flaw of the Global Warming Theory
The Fatal Flaw of the Global Warming Theory

... balance the blockage of IR flux to space if all other factors are held constant. But this pure IR energy blocking by CO2 versus compensating temperature rise for radiation equilibrium is unrealistic for the long-period and slow CO2 rises that are occurring. Only half of the blockage of 3.7 Wm-2 at t ...
slides - Medical and Public Health Law Site
slides - Medical and Public Health Law Site

... "all the issues raised in [the] petition," adding a "particular" request for comments on "any scientific, technical, legal, economic or other aspect of these issues that may be relevant to EPA's consideration of this petition." 66 Fed. Reg. ...
02_Lunch_BWielicki Economic Value - A
02_Lunch_BWielicki Economic Value - A

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Expansion of the Hadley cell under global warming
Expansion of the Hadley cell under global warming

... been identified in observational analyses of the Walker circulation [Vecchi et al., 2005; Zhang and Song, 2006]. [4] However, it remains to be seen whether it also projects onto the zonally averaged part of the circulation. Analysis of the satellite observations indicates a poleward expansion of the ...
Restorative Land Use as Appropriate Technology: a System Account
Restorative Land Use as Appropriate Technology: a System Account

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MEMORANDUM TO THE PRESIDENT From: John P. Holdren
MEMORANDUM TO THE PRESIDENT From: John P. Holdren

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- UNDP Climate Change Adaptation
- UNDP Climate Change Adaptation

... 1. Kazakhstan is a semiarid to arid country with a temperate climate, facing significant desiccation in the face of climate change, and significant exacerbation of baseline (non-climate) pressures. Kazakhstan’s national communications to the UNFCCC indicate that climate change scenarios for Kazakhst ...
Greenhouse Effect - Scientist in Residence
Greenhouse Effect - Scientist in Residence

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Global climate change and the Antarctic Treaty system since 2000.
Global climate change and the Antarctic Treaty system since 2000.

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The Global Ozone Layer
The Global Ozone Layer

...  Nitrous oxide (N2O) is known to both deplete global ozone and warm the climate. The current ODP-weighted anthropogenic emission is larger than that of any ODS.  Geo-engineering: Deliberate large injections of sulfurcontaining compounds into the stratosphere would alter the radiative, dynamical, a ...
Reconfiguring the Contours of Statehood and the Rights of Peoples
Reconfiguring the Contours of Statehood and the Rights of Peoples

... well, few things are more politically charged than attempts to carve out a new territorial state. That, however, does not detract from disappearing states’ right to exist as states. Since its inception in the 19th century, the nation state has always been imagined as a space of distinct belonging, f ...
Official PDF , 5 pages
Official PDF , 5 pages

... labor, and the effect on cereal prices. The incidence curves depicted in figure 1 show that productivity losses will negatively affect returns to land across the entire income distribution, but that the rich lose proportionately more than the poor because they hold the lion’s share of land (black li ...
Backgrounder on the Clean Growth Climate Action plan
Backgrounder on the Clean Growth Climate Action plan

... reach a consensus decision and suite of recommendations1 to help BC meet its climate change reduction targets. The team reached consensus from a group that included leaders from First Nations, business, academia, local government, and environmental organizations. A considerable amount of research an ...
Projected Climate Change and the Appalachian Trail
Projected Climate Change and the Appalachian Trail

... permanent drought for most of the A.T. Impacts on the A.T. No single climate projection can be taken as an accurate forecast of future climate. Climate models are not that precise, and even if they were, there is great uncertainty about the level of future CO2 emissions. However, both from basic cli ...
Contact information of the Chairs/Coordinators of regional
Contact information of the Chairs/Coordinators of regional

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Climate change innovation jobs (opens in new window)
Climate change innovation jobs (opens in new window)

... We should also note that the higher job creation rate reflects, in large part, the fact that renewables are not yet cost-effective. Not being ‘least cost’ means, by definition, that these options use up more inputs – both in terms of capital and labour – for a given amount of output. Two of the most ...
Rapid Climate Change Science Plan
Rapid Climate Change Science Plan

... involve all the direct measurements in the Nordic Seas, including the mixing processes discussed below, and the model-data synthesis efforts (see 4 below). The programme will also support studies of mixing processes such as convective and non-convective vertical mixing, interaction with topography ( ...
Discussion Paper - International Council for Science
Discussion Paper - International Council for Science

... an International Science Panel on Renewable Energy. ...
Unit 3: How can we hinder man
Unit 3: How can we hinder man

... and phytoplankton growth after fertilization can have other, unfortunate, consequences. ...
Climate change, threat multiplier and internal conflicts in Northeast
Climate change, threat multiplier and internal conflicts in Northeast

... Climate security/climate conflict in public debate In August this year, the UN Secretary-General Ban Ki-moon told a Global Environment Forum in Korea (at the same time that governments were meeting in Bonn for five days of informal climate negotiations) that failure to act quickly on climate change ...
ICLEI Milestone 2 Report Climate Changes and Impacts for the City
ICLEI Milestone 2 Report Climate Changes and Impacts for the City

... Local response to sea level rise As a complicating factor, for a given rise in global mean sea level the relative local response can be very different from one location to another. Local sea level rise is determined by regional ocean temperatures and circulation, atmospheric pressure and wind speeds ...
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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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