نتایج جستجو برای: emission scenarios
تعداد نتایج: 285482 فیلتر نتایج به سال:
Abstract This study examines the effects of climate change on runoff in the Yellow River basin in Khuzestan province. In this study, the combination of 14 general circulation models under two emission scenarios A2 and B1 were used for simulating the climatic variables in the next period (2025-2054) compared to the baseline period (1971-2000). The weighting method of mean observed temperature...
Entropy production in industrial economies involves heat currents, driven by gradients of temperature, and particle currents, driven by specific external forces and gradients of temperature and chemical potentials. Pollution functions are constructed for the associated emissions. They reduce the output elasticities of the production factors capital, labor, and energy in the growth equation of t...
The frequent episodes of high concentrations of ozone and of inhalable particulate matter occurring in the Metropolitan Area of Sao Paulo (MASP) are primarily associated with vehicle emissions. The objective of this study was to evaluate the impact of the use of reformulations of the gasoline-ethanol blend known as gasohol and of ethanol on the ozone formation. A three-dimensional photochemical...
We used Comparative Risk Assessment methods to estimate the health effects of alternative urban land transport scenarios for two settings-London, UK, and Delhi, India. For each setting, we compared a business-as-usual 2030 projection (without policies for reduction of greenhouse gases) with alternative scenarios-lower-carbon-emission motor vehicles, increased active travel, and a combination of...
We analyze the different regional and generational contributions to increases of C02 concentrations resulting from fossil-fuel use since the onset of the industrial revolution. Equitable future per capita emission allowances under a range of concentration stabilization scenarios (additional 140, 280, and 420 ppm over pre-industrial levels) by the year 2100 are outlined. The intraand inter-gener...
Abstract. Air pollution is a major issue in China and one of the largest threats to public health. We investigated future changes atmospheric circulation patterns associated with haze events Beijing region severity during these conditions from 2015 2049 under two different aerosol scenarios: maximum technically feasible reduction (MTFR) current legislation scenario (CLE). In both cases greenhou...
The Colombian Orinoco savannas (254 thousand km 2 ), also known as Orinoquia or Llanos, have been steadily transformed into pastures for more than a century, and since the 1990s, commodity crop intensified production. cropland area expanded at 12% yr ?1 during 2007–2018 period (65% larger in 1996–2007). Yet, we estimate that cattle ranching occupied ten times (34%) (3.2%) 2018. rest of Orinoqui...
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