Vishal Sharma / Agra October 27, 2008, 0:12 IST

Gasifier plant to cut fuel bills by Rs 8 lakh a year; currently on subsidy.

Worried over the rising prices of liquiefied petroleum gas (LPG) and the unavailability of natural gas, some enterprising industrialists of Agra have come up with an innovative solution to tide over their fuel supply problems.

Let

The observed increase in the concentration of greenhouse gases (GHGs) since the preindustrial era has most likely committed the world to a warming of 2.4°C (1.4°C to 4.3°C) above the preindustrial surface temperatures. The committed warming is inferred from the most recent Intergovernmental Panel on Climate Change (IPCC) estimates of the greenhouse forcing and climate sensitivity.

The burning of biomass fuels results in exposure to high levels of indoor air pollution, with consequent health effects. Possible interventions to reduce the exposure include changing cooking practices and introduction of smoke-free stoves supported by health education. Social, cultural and financial constraints are major challenges to implementation and success of interventions.

Anthropogenic activities are responsible for the enhanced emission of reactive nitrogenous species like nitrous oxide (N2O), oxides of nitrogen (NOx) and ammonia (NH3) into the atmosphere from the biosphere. This article reviews the available estimates of emissions of these reactive nitrogenous species for India.

until now, it was believed that methane, from cattle dung and paddy cultivation, was the second biggest contributor to global warming after carbon dioxide. A recent review says soot is the second

Past atmospheric methane concentrations show strong fluctuations in parallel to rapid glacial climate changes in the Northern Hemisphere, superimposed on a glacial

Abstract Black carbon in soot is the dominant absorber of visible solar radiation in the atmosphere. Anthropogenic sources of black carbon, although distributed globally, are most concentrated in the tropics where solar irradiance is highest. Black carbon is often transported over long distances, mixing with other aerosols along the way. The aerosol mix can form transcontinental plumes of atmospheric brown clouds, with vertical extents of 3 to 5 km.

Rice is the most important Kharif crop of Punjab. With the increase in production of rice there is concomitant increase in the production of residue (rice straw), which is approximately 18.75 MT. About 80 percent of the rice residue it burnt in the fields, particularly after harvesting rice by combine harvesters.

Residue burning practice is followed in major Indian states of Uttar Pradesh and Punjab. Agricultural residue burning in the fields and used otherwise for rural domestic needs is responsible for a large number of toxic emissions, which are a health hazard.

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