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Nombre de programmes trouvés : 76
Conférences

le (15m0s)

Climate, Geography and Macroeconomics: Revised Data, Refined Analysis and New Findings

Assessments of social and economic impacts of climate change are primarily based on the results of biophysical climate impact models, which are aggregated, extrapolated and/or valued in monetary terms. Another potential source of information on climate impacts are spatial and/or temporal analogues, such as Ricardian analysis of climate impacts on agriculture. Another recent effort to this end involves the development of the G-Econ database (Nordhaus, 2006), which describes the relationship between climatic and geographic factors on the one hand and regional economic productivity on the other. A multivariate regression derived from this database has been used to estimate global economic ...
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Conférences

le (11m43s)

The Largest Lakes and reservoirs of Russia as a Priority Water Ressource for Society

Global change for the last 25 years drives to important changes in hydrometeorological regime in different regions, reflecting water resources change of the larges reservoirs and lakes of Russia and of lakes’ district with more than 460,000 small and middle size lakes (North-western part of Russia and Finland. Interdisciplinary approaches in water resources research include as methods of traditional hydrology and climatology as paleoclimatology and economy. Decrease in the water level of largest Lakes (Ladoga, Onega, Ilmen) by 35-70 cm has been registered over the 1990s, the warmest decade in the time series. At the same time inflow to the ...
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Conférences

le (21m39s)

Present-Day Geomorphological Changes in Polar Regions

The landscape uniqueness of polar zone manifests itself in morphological traces of older glaciations and marine transgressions, areas of present-day glaciations, multi-year permafrost, multi-year snow covers, deglaciation processes variable in time and space and resulting in an expansion of ice-free 94 areas, multi-directional geosuccession, and finally in the various responses of the Arctic peoples to landscape changes and the growing human impact. The abrupt landscape changes taking place over a period shorter than the life span of a single generation can be due to a wide variety of natural causes, whether endogenous or exogenous, or to the increasing, multi-directed human ...
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Conférences

le (31m55s)

The Economics of the Climate/Development of the Gordian Knot; Beyond a Sound Pessimism

We will first suggest that costs of meeting ambitious climate targets capable to stabilize global warming below 2°C or 3°C temperature increase have been underestimated so far. The first reason is the underestimation of baseline emission scenarios, the second is the magnitude of transition costs towards a low carbon development profile in emerging economies. Second we will show that this pessimistic diagnosis does not lead to inaction but to a reframing of discussions on future international coordination of climate action. We will insist on the necessity of complementing the conventional approaches relying on the emergence of a world carbon price ...
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Conférences

le (23m15s)

Interlocking Natural and Social Systems - Resilience, Governance and Research Policy Considerations

In this presentation the start is made from the 2007 IPCC statement that it now seems consolidated that there is a clear sign of the importance of the anthropogenic factors in the climate change panorama in addition to the natural phenomena. Thus the current situation of civilisation seems to be characterised by the quickly growing interference and to some extent control by humans over natural flows e.g. the carbon or nitrogen cycles to an extent not earlier seen in history. This development is of recent date - maybe half a century - and could be regarded as the beginning of ...
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Conférences

le (31m25s)

Post-2012 options to Reduce Greenhouse Gas Emissions

The presentation will focus on post-2012 options to reduce greenhouse gas (GHG) emissions, putting special emphasis on the need to abate world emissions. The presentation will focus on post-2012 options to reduce greenhouse 27 gas (GHG) emissions, putting special emphasis on the need to abate world emissions at least cost, which in turn requires the need to select a least-cost set of policy instruments. In particular, model simulations will be presented to discuss whether and how price instruments should be combined with technology- support policies in order to reduce overall mitigation costs. On a more speculative note, the potential implications ...
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Conférences

le (33m37s)

The Intergovernmental Panel on Climate Change and the Challenges of Climate policy, Equity and Ethics

The 2007 Intergovernmental Panel on Climate Change (IPCC) report provides clear guidance for the greenhouse gas emissions reductions needed to limit global warming to specific targets such as 2 °C above pre-industrial values, as adopted formally by the European Union. Despite the strong scientific consensus found by the IPCC concerning the reality and seriousness of global warming, worldwide emissions of the greenhouse gases that cause climate change continue to increase each year. The nations of the world are still far from agreement on how to act to reduce emissions.
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Conférences

le (27m2s)

The Impacts of Climate Change on Continental Ecosystems

Climate change will deeply modify the ecophysiological functioningof plants, by creating a set of conditions which could be more favourable (in the sense of biomass production) or not. Among the first, the increase ofatmospheric CO2 will stimulate the photosynthesis (with levels depending upon plants and conditions), with a result of a potential increase in biomass up to 20 % in some cases. Warmer temperatures will also generally be favourable to most of the physiological processes, up to an optimum above which the risk of detrimental or lethal values exists. The (almost) generalized advance in phenology (calendar of development stages) will ...
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