نتایج جستجو برای: generating co2 emissions and contributing to earth warming
تعداد نتایج: 18328379 فیلتر نتایج به سال:
Wildfires are by far the largest contributor to global biomass burning and constitute a large global source of atmospheric traces gases and aerosols. Such emissions have a considerable impact on air quality and constitute a major health hazard. Biomass burning also influences the radiative balance of the atmosphere and is thus not only of societal, but also of significant scientific interest. T...
There is no single perfect refrigerant for diverse air conditioning, refrigeration, and industrial applications. The predominant halocarbons (CFCs, HCFCs, and HFCs) combine excellent efficiency and safety with acceptable costs. However, they contribute to ozone depletion potential (ODP) and/or global warming potential (GWP). The Montreal Protocol has eliminated ODP by requiring replacement of C...
Methane (CH4) effluxes by paddy-culture rice (Oryza sativa L.) contribute about 16% of the total anthropogenic emissions. Since radiative forcing of CH4 at current atmospheric concentrations is 21 times greater on a per mole basis than that of carbon dioxide (CO2), it is imperative that the impact of global change on rice CH4 emissions be evaluated. Rice (cv. IR72) was planted in sunlit, closed...
The atmospheric composition, temperature and sea level implications out to 2300 of new reference and cost-optimized stabilization emissions scenarios produced using three different Integrated Assessment (IA) models are described and assessed. Stabilization is defined in terms of radiative forcing targets for the sum of gases potentially controlled under the Kyoto Protocol. For the most stringen...
Introduction: Greenhouse gas (GHG) emissions have caused environmental effects. Food production is one of the sources of GHGs. This study aimed to suggest dietary scenarios for decreasing GHG emissions. Materials and Methods: GHG emissions in the target population of Urmia city, Northwest Iran, were investigated using a modeling approach. Three dietary scenarios were modeled and analyzed to ev...
Introduction: Economic growth is one of the most important goals of a country and has a close relationship with health expenditures and emissions of environmental pollutants. Health expenditures and environmental quality are also among the other important issues. On the one hand, environmental problems have become a serious threat to humankind in recent years. On the other hand, meaningful heal...
[1] A coupled atmosphere-ocean-carbon cycle model is used to examine the long term climate implications of various 2050 greenhouse gas emission reduction targets. All emission targets considered with less than 60% global reduction by 2050 break the 2.0 C threshold warming this century, a number that some have argued represents an upper bound on manageable climate warming. Even when emissions ar...
We infer global and regional emissions of five of the most abundant hydrofluorocarbons (HFCs) using atmospheric measurements from the Advanced Global Atmospheric Gases Experiment and the National Institute for Environmental Studies, Japan, networks. We find that the total CO2-equivalent emissions of the five HFCs from countries that are required to provide detailed, annual reports to the United...
Some earth system modeling studies indicate that the warming due to past carbon emission is 6 proportional to that emission 1 and relatively stable on the multi-centennial to millennial 7 timescale 2,3. This claim implies that future warming will be due to future emissions and offers 8 the possibility of using the observed ratio of CO 2-attributable warming to cumulative carbon 9 emissions to e...
ENVIRONMENTAL PERSPECTIVE Most people today are aware of environmental issues related to consumption of fossil fuels. Global warming and consequent unwanted changes in the chemistry of our planet, as a result of greenhouse gas emissions, is a chief concern, which motivates investments to replace fossil fuels by renewable energies. In the year 2000, the annual CO2 emission from the combustion of...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید