Reductions in carbon intensity, C/E, the carbon emitted per unit of energy generated, reflect the degree to which societies decarbonize their energy sources. The long-term trend has been a shift from coal to oil to natural gas––hydrocarbons with decreasing C/H ratios emitting progressively less CO2 per joule. However, the increasing use of clean low-carbon fuels is not sustainable without somehow disposing of excess carbon because it opposes the trend in the abundance of fossil fuels, with coal resources being the most abundant followed by oil and gas. (more…)
The global cycling of carbon involves both biological and physical processes. Only the biological components are discussed here. Pl ...
The flux of carbon among terrestrial, aquatic, and atmospheric pools is at least partially controlled by photosynthetic process ...
It is of interest to examine potential sources of greenhouse gases sources or atmospheric CO2 by analysis of the global distrib ...
Climate change caused by the enhanced greenhouse effect is one of the most significant global environmental issues. Increased emiss ...
The global carbon cycle involves both biological and physical processes. Only the biological components are discussed here. Pla ...
The European Automobile Manufacturers Association (ACEA) has offered, and the European Commission (EC) has accepted, a voluntary commitment to reduce the CO2 emissions from new light-duty passenger vehicles, with firm fleetwide targets of 140 g CO2 /km (B41 mpg for gasoline) by 2008, measured under the new European test cycle (Directives 93/116/EC and 99/100/EC). This represents approximately a 25% reduction from the 1995 average of 187 g/km (B30 mpg) on this cycle. The European cycle is likely to produce lower fuel economy ratings than the U.S. combined urban/ highway cycle, so the ‘‘U.S. equivalent’’ miles per gallon ratings of the year 2008 European fleet will likely be higher than 41 mpg if the targets are met. (more…)
Although the automotive industry is a vigorous sponsor of research and development in vehicle efficiency technology—worldwide, ...
Addressing global warming, however, is a highly complex and daunting endeavor. Many climate experts have urged the world to stabili ...
We know of no studies that have examined vehicle taxation incentives programs elsewhere in the world, but it seems likely that ...
A variety of information programs exist in the major automobile markets to assist potential purchasers of new cars in comparing fue ...
There are various and somewhat complementary reasons to foster the growth of renewable energy sources in Europe. A major incent ...
The continuous availability and affordability of energy and, in particular, electricity supply is an indispensable condition for the working of a well-functioning modern society. This is especially true for advanced industrial or post-industrial societies, where electricity generation provides the services essential for production, communication and exchange. Unsurprisingly, governments of OECD countries are thus concerned with understanding the factors influencing the security of energy and electricity supplies and seek to develop policy frameworks and strategies to enhance them. (more…)
Nuclear energy has some distinct advantages in strengthening the external dimension of energy supply security. These include: ...
Geopolitical risk refers almost always to primary energy carriers (oil, gas, coal, uranium or renewable energy) since their loc ...
In Europe, modern renewable energy sources technologies were explored thoroughly for the first time after the oil embargo/ price cr ...
Biomass has been a main energy sources in the world since the beginning of civilization. It has been important in development p ...
Following the recent completion of three nuclear power plants, there is now some 9.6 GW of nuclear capacity in the United Kingd ...
The age of industrialization came into full force through the modern exploration and use of fossil fuels. As one of its most striking phenomena, the rapid expansion of cities throughout the late 19th and the 20th centuries was a direct outcome of the fossil fuel energy economy as well. (more…)
The aim is to work with cities in advancing renewable energy technologies and systems and to help promote the renewable energy indu ...
The Solar City approach originally emerged from a new generation of International Energy Agency (IEA) energy research and developme ...
In the absence of useful and established patterns of practice, a search is under way for new means of reconciling local government’ ...
As a reaction to these historical perspectives, the building industry has witnessed a certain rise in design responses to regio ...
Climate change caused by the enhanced greenhouse effect is one of the most significant global environmental issues. Increased emiss ...
Biofuels are made from living matter, plant or animal, and are strongly favored by agricultural interests because of the large boost they bring to domestic farms. Most U.S. biofuels is made from corn (ethanol) or soybeans (biodiesel), although several unusual fuel sources are emerging, including algae and oil waste from deep-frying of foods. The biofuels industry experienced meteoric growth in 2005, 2006 and early 2007, but then it began to slow because of high feedstock prices. Private investment in biofuels finished off 2007 at $2.1 billion, according to ‘Global Trends in Sustainable Energy’, a report by New Energy Finance and United Nations Environmental program. (more…)
We had expressed our disagreement with Biofuels and tell them also that the European Union also wants to distance themselves from t ...
I just read a very good news via Reuters. And is that the EU has decided to distance themselves from biofuels usage. As we here ...
Do we have the resources? Rudolf Diesel developed the diesel engine which ran on biodiesel vegetable oil in the late 1800s. At the ...
In Bonn met world leaders at the UN Conference on Biodiversity. As we here at The Green Blog world's biodiversity is seriously ...
A vece the attempt to find alternatives to fossil fuels leads to something worse, such as biofuels or agrofuels, considering the dr ...
The accumulation of carbon within a forest growth cycle can be considered in four stages. The initial establishment stage involves low global carbon cycle accumulation and may even experience net carbon loss (particularly from soil) as a result of site preparation and low biomass and bioenergy inputs. A rapid uptake of carbon is then experienced during the second phase, known as the full vigor stage, which subsequently levels off as the stand reaches the mature stage. Finally, the forest reaches old growth and the carbon is in steady state with accumulation associated with new growth balanced by mortality and disturbances. (more…)
Climate change caused by the enhanced greenhouse effect is one of the most significant global environmental issues. Increased emiss ...
To date, most discussion and research relating to the various of biomass role in mitigating CO2 emissions has been focused around i ...
The quantification of the actual reduction in green house gases sourcess emissions resulting from the substitution of fossil fu ...
Bioenergy produced from biomass is sometimes called a carbon-neutral energy source, because the same quantity of carbon released wh ...
The global cycling of carbon involves both biological and physical processes. Only the biological components are discussed here. Pl ...
To date, most discussion and research relating to the various of biomass role in mitigating CO2 emissions has been focused around its use as a fuel or as a sink. However, full utilization of the potential of biomass products, particularly from woody biomass, may provide significant opportunities. (more…)
Climate change caused by the enhanced greenhouse effect is one of the most significant global environmental issues. Increased emiss ...
Bioenergy produced from biomass is sometimes called a carbon-neutral energy source, because the same quantity of carbon released wh ...
The accumulation of carbon within a forest growth cycle can be considered in four stages. The initial establishment stage involves ...
The quantification of the actual reduction in green house gases sourcess emissions resulting from the substitution of fossil fu ...
Estimation of the future technical potential of biomass as an energy source is dependent on assumptions with respect to land av ...
Establishing the impact of climate change on energy demand requires a measure of heating and cooling requirements. In the United States, this measure is a degree day, which is defined in terms of an absolute difference between average daily temperature and 651F, which is an arbitrary benchmark for household comfort. Commercial heating degree days are incurred when outside temperatures are below 651F, generally during the winter heating season from October through March. (more…)
Here, the sensitivity of energy demand to climate is measured two ways. The first method uses elasticities that provide simple summ ...
To determine the effects of past climate trends on global energy consumption, the econometric equations providing the degree day el ...
Energy is consumed by various segments of the economy, including households, commercial establishments, manufacturing enterpris ...
Although the focus of many policy studies of climate change is on establishing the causal links between anthropogenic systems, emis ...
Climatologists generally agree that there is accumulating evidence that a warming trend has been occurring since the mid-1960s. The ...
The global cycling of carbon involves both biological and physical processes. Only the biological components are discussed here. Plants and other photosynthetic organisms assimilate CO2 and eventually convert the CO2 to simple sugars trough sugar extraction fermentation. From simple sugars, plants synthesize a variety of compounds and store them in the form of plant tissue. (more…)
The global carbon cycle involves both biological and physical processes. Only the biological components are discussed here. Pla ...
The flux of carbon among terrestrial, aquatic, and atmospheric pools is at least partially controlled by photosynthetic process ...
The accumulation of carbon within a forest growth cycle can be considered in four stages. The initial establishment stage involves ...
Reductions in carbon intensity, C/E, the carbon emitted per unit of energy generated, reflect the degree to which societies decarbo ...
It is of interest to examine potential sources of greenhouse gases sources or atmospheric CO2 by analysis of the global distrib ...
The quantification of the actual reduction in green house gases sourcess emissions resulting from the substitution of fossil fuels with energy from waste biomass requires a complete lifecycle assessment (LCA). A systematic framework for estimating the net Green House Gases emissions from bioenergy systems and comparing them against the fossil fuel reference system that it would replace has been developed. The major considerations of the life cycle assessment approach to quantifying the greenhouse impacts of bioenergy are as follows: (more…)
Bioenergy produced from biomass is sometimes called a carbon-neutral energy source, because the same quantity of carbon released wh ...
Climate change caused by the enhanced greenhouse effect is one of the most significant global environmental issues. Increased emiss ...
To date, most discussion and research relating to the various of biomass role in mitigating CO2 emissions has been focused around i ...
Estimation of the future technical potential of biomass as an energy source is dependent on assumptions with respect to land av ...
The accumulation of carbon within a forest growth cycle can be considered in four stages. The initial establishment stage involves ...