Greenhouse gas concentrations in the atmosphere hit new record highs in 2022, with no end in sight to the rising trend, according to this new report by the World Meteorological Organisation (WMO). This Bulletin represents the latest analysis of observations from the WMO GAW Programme. It shows globally averaged surface …
Human activities are releasing tiny particles (aerosols) into the atmosphere. These human-made aerosols enhance scattering and absorption of solar radiation. They also produce brighter clouds that are less efficient at releasing precipitation. These in turn lead to large reductions in the amount of solar irradiance reaching Earth's surface, a corresponding …
Fireworks that mark public leave the air pollutant ozone according to research conducted at the Jawaharlal Nehru University , in India. Ozone in the lower atmosphere works as a respiratory irritant, a greenhouse gas and a plant toxin. Its production from oxygen in this part of the atmosphere was previously …
retail petrol outlets have been identified as sources of atmospheric air pollution by the Tamil Nadu Pollution Control Board ( tnpcb ). A tnpcb directive states that hydrocarbon vapours are emitted into the atmosphere from the large underground tanks of these outlets during storage. It is also emitted at time …
studying a half-metre-long stalagmite recovered from a now submerged cave in the Bahamas has shown that there were dramatic changes in the amount of radioactive carbon swirling around in the Earth's atmosphere during the last Ice Age. The changes were far greater than previously believed. The findings serve a warning …
Dust blown from Africa not only produces striking sunsets in Florida, usa, but also carries with it lethal stowaway bacteria and fungi. The dust plumes begin their trans-Atlantic journey from the topsoil of the Sahara Desert. The dust is transported into the atmosphere and crosses the Atlantic Ocean to reach …
officials of London's Luton airport have decided to charge a fee from passengers to combat the detrimental impact of their flights on the atmosphere. Those boarding their flight from the airport, which is mainly used by low-cost and charter airlines, will have to pay up to us $4.24 depending on …
the atmosphere can no more cleanse itself naturally as well as it used to. Its ability to do so has weakened over the past decade, possibly because of a change in the mix of pollutants emanating from industrialised nations, report us -based researchers. Atmospheric levels of the atmosphere's main cleansing …
greenhouse gas emissions have caused the world's oceans to heat up significantly over the last 50 years, according to two latest studies. The Atlantic, Pacific, and Indian oceans have collectively warmed an average of 0.06
A new compromise proposal recently released by Jan Pronk, chairperson of climate change talks held in November 2000, offers too many sops to the us , perhaps in a bid to bring back the country into the loop. Pronk invited about 40 countries to informally discuss the new proposal in …
We conducted the study described in this paper to investigate the impact of ambient temperature on mortality in the Netherlands during 1979-1997, the impact of heat waves and cold spells on mortality in particular, and the possibility of any heat wave- or cold spell-induced forward displacement of mortality. We found …
an unknown reservoir of nitrous oxide, a potent greenhouse gas, has been found within the coastal waters of the Arabian Sea bordering India's west coast. This was discovered by scientists at the National Institute of Oceanography, Goa. The discovery of the nitrous oxide reserve, commonly known as laughing gas, could …
the ozone layer over Antarctica has depleted severely, according to the World Meteorological Organisation ( wmo ), a un agency. "The latest satellite observations in the sunlight portion of the Antarctica perimetre show an average decrease of about 30 per cent in the total amount of ozone overhead when compared …
allergy sufferers, beware: global warming could bring more hay fever, according to us government research that shows ragweed produces significantly more pollen as carbon dioxide increases. The ubiquitous weed makes nearly twice as much pollen now as it did 100 years ago and is likely to double its production over …
Researchers in the us have found out that the nitrate in snow interacts with sunlight and sets off a very rapid series of photochemical reactions, producing oxides of nitrogen (no x ). "We found very high concentrations of no x in the snow of areas which are beyond the reach …
a team of us and European scientists have identified a new greenhouse gas that traps heat more effectively than all other known greenhouse gases. Trifluoromethyl sulfur pentafluoride ( sf5 cf3 ) is a synthetic gas and is 18,000 times more effective in trapping atmospheric heat as compared to carbon dioxide, …
one would assume that carcinogenic compounds like polycyclic aromatic hydrocarbons ( pah s) were confined just to this world alone. But for nearly 20 years astronomers have been debating whether molecules of pah s are as common in space as they are on earth. pah s are customarily found in …
mirrors orbiting outer space; giant reflectors between the Earth and the Sun; trillions of helium balloons in the air. Does this read like a sci-fi script to you? These are some of the rather elaborate solutions to counter the rising carbon dioxide ( co2 ) levels in the atmosphere. These …
Measurements and models show that enhanced aerosol concentrations can augment cloud albedo not only by increasing total droplet cross-sectional area, but also by reducing precipitation and thereby increasing cloud water content and cloud coverage. Aerosol pollution is expected to exert a net cooling influence on the global climate through these …
in recent years, the rainfall pattern in midsummer in the densely populated Tokyo and Yokohama in Japan has changed from gentle to tropical squall-type rainfall, involving sudden, violent winds with torrential downpours. Researchers at Tokyo University's Centre for Climate System Research believe it is due to the "heat island phenomenon", …
