Question raised in Lok Sabha on Air Pollution, 22/11/2016. The air pollution in National Capital Region (NCR) reached severe category in Air Quality Index (AQI) recently during the first week of November,
....should come cheaper not dearer. But obviously someone does not care
The BJP was the only party which mentioned environmental issues in its poll manifesto. But the budget ignores it entirely
ENVIRONMENTAL problems, like other real-world concerns, never make for soft solutions. Even on the eve of its implementation, the laudable scheme whereby all new cars registered in Delhi, Bombay,
<p>Air Pollution is caused by a number of pollutants emanated from various sources. Under sound air pollution control strategy the detailed analysis and assessment of all the pollutants having detrimental effects on human health and environment is required.
With Arwind Kejriwal declaring Public Health Emergency, this is following a high AQI recorded in New Delhi. The levels recorded were higher than most of the capital cities around the world. Delhi closed
There is an air emergency in North India as pollution levels are almost 13 times the safe limit. Delhi Chief Minister Arvind Kejriwal describes it as a 'gas chamber' and orders the closure of all schools
One person dies every hour in Delhi due to ambient air choked with particles. Diesel exhaust is a major source of fine particles that are the most lethal. Environmental regulators in California and elsewhere are putting the brakes on diesel cars.
Caught in the polluting haze of two and three wheelers, Asia is completely helpless today. The menace of these vehicles is unique to Asia. Therefore, the solutions have to come from within. But experts question the continent's capability to come up
Hong Kong will have to pay dearly for cleaning up its dirty air
As pressure mounts on them to produce more electric cars, manufacturers question their environmental benefits
The current emission standards and safety measures for conversion of in-use vehicles to CNG are extremely lax. The emission standards only require the vehicles to meet the equivalent standards for diesel and petrol vehicles in force in the year of manufacture. This means that a pre-1996 vehicle after being converted to CNG would have to meet only the outdated emission
Some of the major airlines of the world seem to be lately realizing the adverse role of their big passenger jets on climate changes resulting in emissions of carbon dioxide and other greenhouse gases from the engine-exhausts into the earth's atmosphere. In this context Virgin Atlantic's first flight of a commercial aircraft powered with biofuel from London to Amsterdam on February 24, 2008 to show it can produce less carbon dioxide than normal jet fuels was an appreciable endeavour. This particular flight was partially fueled with a biofuel mixture of coconut and babassu oil in one of its four main fuel tanks and is expected to produce much less CO2 than regular jet fuel. Since aircraft engines emit gases and particulates that reduce air quality, spearheading the test flight was indeed a potentially useful experiment aimed at cutting down emission of greenhouse gases. A few weeks prior to this, an airbus A 380 too had taken off on a similar test sortie, powered on a blend of regular fuel and liquid fuel processed from natural gas with the hope that the super jumbo will become a centerpiece of efforts to develop the next generation of cleaner fuel. Besides, Air France-KLM is reported to invest almost US$3 billion a year until 2020 to modernize its fleet with the aim of cutting pollution. Several other airlines have also pledged to clean up their fleets as fears about global warming and fuel costs have mounted. Usually, people form their opinion on the adverse impact of air pollution by observing petrol and diesel-driven vehicles leave harmful trails of smoke on the roads. However, the great damage being done by thousands of air turbine fuel (ATF) guzzling aeroplanes that release tonnes hazardous fumes into our biosphere daily goes unnoticed. The increasing size of aircraft, the emission of black smoke during take-off, and the density of air traffic at major airports, have drawn environmentalists' attention to pollution by aircraft. A loaded jumbo 747, for instance, uses tens of thousands of litres of fuel on merely take-off. Further pollution by aircraft arises from the jettisoning of spare fuel after being airborne. Under such circumstances, it must be released at a height sufficient to allow it to vaporize so that it does not reach the ground in liquid form. Commercial jet planes make a significant contribution to the problem of global warming. According to a UN report, aviation is responsible for over half of the pollution caused by transportation on the surface. Scientists estimate that the effect of aviation emissions on the climate is up to five times the impact of emissions occurring on the ground. The primary gas emitted by jet aircraft engines is carbon dioxide, which, scientists believe, can survive in the atmosphere up to 100 years. It means denying the coming generations from living in a world where they can breathe clean air, enjoy diverse ecosystems and eat healthy food. In India the number of passenger and freight aircraft flown by private airlines is fast multiplying. Similarly, the Indian Air Force, currently in aircraft acquisition mode, is likely to increase its flying operations in the coming years. Its increasing use of supersonic combat aircraft flying at high altitudes may lead to increasing pollution of the upper air, where pollutants may accumulate since natural dispersion at such heights is not very effective. This development is going to be a major contributory factor in the destruction of ozone and the accumulation of green house gases in the upper layers of the atmosphere. It is estimated that one multi-engine passenger aircraft is being added every fortnight to the fleets of India's domestic carriers that are engaged in cutthroat competition to fly to the remotest corners of the country. As a result, the number of aircraft flying the Indian skies has gone up considerably. Here, one must not forget the domain of military aviation, Air Force, Army, Navy and the coast guard, where more than 1,000 fighter jets, transport planes and helicopters are kept aloft in routinely scheduled day and night flying. As per the estimates, the movement of aircraft in Indian airspace is growing at an annual rate of 15 per cent. Incidentally, kerosene happens to be the principal component of ATF. It is used as a propellant in modern commercial as well as military aircraft. Like other fossil fuels, kerosene produces carbon dioxide and water vapour on combustion. As the combustion process can not be said to be entirely efficient, carbon monoxide and oxygenated organic compounds, that are the products of partial oxidation, are emitted into the upper layers of the atmosphere. Hence, the extremely harmful environmental impact of pollutants left behind by aircraft engine exhaust fumes should be a great cause of concern for enlightened citizens. Though the International Civil Aviation Organisation (IACO), a UN body is reportedly supposed to regulate aircraft engine emissions by setting emission certification standards for all aircraft but it more or less appears to be an exercise on paper. In December 2007, the UN Climate Conference in Bali, Indonesia negotiated a new climate policy to chart out long term goal for global green house gas emissions. The world will not be able to realise these objectives unless technological breakthroughs are achieved in drastically reducing exhaust emissions from commercial as well as military aircraft gas turbine engines. This will necessitate a global effort in finding alternative jet fuels and developing engines that burn existing fuels more slowly.
The Impact On Urban Transportation By TATHAGATA CHATTERJI Thousands of sleek, little Tata-Nanos are likely to jostle for urban road space within a year. Nano boasts a brilliant design innovation for the all-weather travel requirements of the budget-conscious Indian family. However, the very affordability of the car has raised certain critical questions: If the roads are clogged by millions of new cars, will there be enough space to drive? How does one manage the legitimate aspirations of the Indian family in the urban context? The future of mobility in Indian cities, already teeming with bumper to bumper traffic and exasperated commuters, needs urgently to be addressed as the country moves towards an increasingly urban future along with the structural shift in the economy ~ from agriculture to industry and service. With 285 million people, urban India now accounts for 28 per cent of the country's population, 62 per cent of the GDP and the bulk of the car purchases. Between 1981 and 2001, on an average, the population in the six metro cities increased by 1.8 times but the number of vehicles rose six-fold. In the Delhi-NCR area, 420 million man-hours are lost every month because of traffic congestion, according to ASSOCHAM. With 1,421 cars per square kilometer, Kolkata now has a higher car density than the vastly more affluent Berlin. There has been a spatial shift as well with the IT and the IT-enabled sector emerging as the main factors of the urban economy and frequently locating to self-contained business complexes in the fringe areas of big cities. Such sleepy residential suburbs of the eighties as Gurgaon, NOIDA or Salt Lake, have now overtaken traditional business areas like Connaught Place or Dalhousie Square as corporate destinations of choice. This combined effect of "suburbanization' of the urban economy and the rising road congestion had compelled the state governments to construct highways and flyovers, replicating the American urban model of car dependent, low-density garden suburbs of the 1950s. However, as the Americans found out the hard way, by the 1970s, the ever-increasing freeways resulted in increased use of cars. This led to rising energy cost, pollution and travel time. Delhi is witness to a similar phenomenon today. Amongst the Indian cities, Delhi has the most extensive roadspace along with an elaborate programme of flyover construction. Over the past 10 years, road length increased by 20 per cent, but cars increased by 132 per cent. The ambitious Delhi-Gurgaon Expressway appears to have crossed the carrying capacity estimated for the year 2016 by the time it was inaugurated this year. The 32-lane toll plaza ~ supposedly the largest in Asia ~ has earned the sobriquet, "parking plaza'. Elsewhere, traffic moves fast on the flyovers but gets stuck in bottlenecks down the road. Compare this with New York, London, Paris or Singapore ~ the high temples of international finance ~ cities where people get around on foot, by taxi or via mass transit. Zurich, Melbourne, Copenhagen ~ which frequently tops the urban quality of living index ~ a sort of ATP ranking of the cities, have a dense urban core, pedestrian-friendly streets, a network of high quality mass transit and policies which discourage private cars in core areas. In parts of Tokyo, one cannot own a car unless one owns a private parking space. London introduced congestion charges in city centre areas in 2003. Since then the volume of traffic has been reduced by 21 per cent and delays shortened by two minutes per kilometer. The present gridlocked mess in India is the outcome of short sighted and uncoordinated policies on land use and transportation. According to a Centre for Science & Environment study, a bus carrying 40 passengers occupies about 2.5 times the roadspace than a car with one or two persons and, at the same time, pays 2.6 times higher tax as well. So the poor end up paying in terms of higher travel time and cost. The real estate costs are sky-high but a single parking slot that occupies 23 square metres costs only Rs 10 for a day, whereas a shop or desk space are charged full commercial rates. Diesel subsidies meant for the trucks and buses are gobbled up by chauffer-driven limousines. Public transport is chronically mismanaged and inadequate. The term
In April of 2020, the Indian government introduced its Bharat Stage VI (BS VI) emissions standards for all new sales of automobiles, which replaced the Bharat Stage IV (BS IV) norms. While BS VI does not
The development of modern biofuels for various energy applications is gaining momentum - both in terms of applications and impacts. Liquid biofuels for transport received special attention in the literature and numerous studies on the sustainability (economic and environmental) of large-scale biofuels production continue to be undertaken.
the world faces two big challenges in the new millen nium. One, to meet energy demand and two, combat rapidly worsening air qua lity. The solution to both the challenges lies in producing cleaner
Noise is probably the most frequently forgotten of the environmental pollutants whose effects can be far-reaching. Noise harms us in more ways than we can think of and at times without us even knowing about it. We cannot have a noise free world but we sure can have a noise safe world. There are various sources of noise pollution. In some places noise from construction projects predominate, while in others it is vehicular traffic or noise from airports. Other sources include the noise in occupational settings or even the noise of simultaneous conversations.
Levels of carcinogenic pollutants are alarmingly high in Calcutta s air
"Kota is fast becoming like Delhi in matters of pollution. What we have here is an exploding situation," says Nishith Arora, a dentist living in Kota. The story of airpollution in the Rajasthan city
