The Intergovernmental Panel on Climate Change (IPCC), Assessment Report 6 (AR6), stated that the recent climate change is “widespread, rapid, intensifying and unprecedented in thousands of years.” It is further noted: “Climate change is already affecting every region on Earth in multiple ways. The changes we experience will increase with …
Presents study consists the results of the Sun photometer measurements of aerosol optical depth (AOD) over the northern Arabian Sea during December 4-17, 2004 along with OCEANSAT-1 Ocean Colour Monitor (OCM) data derived AOD estimates. In-situ AOD ranged between 0.15-0.38 at 500-nm wavelength (with a mean of 0.274). Relatively higher …
Clouds generated by a single jet aircraft can reduce sunshine levels over thousands of square miles, researchers have found. The British Met Office used satellites to watch the vapour trail of an aircraft flying over the North Sea on a sunny day earlier this year. Researchers had expected high-level winds …
Cutting down soot, which is created by incomplete combustion, will be a far quicker way of dealing with climate change than curtailing carbon dioxide emissions which is
Current emissions of anthropogenic greenhouse gases (GHGs) have already committed the planet to an increase in average surface temperature by the end of the century that may be above the critical threshold for tipping elements of the climate system into abrupt change with potentially irreversible and unmanageable consequences. This would …
The consumption of HCFCs has grown at an average annual rate of over 11.3 per cent in the past 15 years ndia will phase out hydrochlorofluorocarbons (HCFCs) by the year 2030. These chemicals are widely used in refrigeration and airconditioning systems and are major cause of global warming. While unveiling …
In 2008, the global urban population exceeded the nonrural population for the first time in history, and it is estimated that by 2050, 70% of the world population will live in urban areas, with more than half of them concentrated in Asia. Although there are projections of future urban population …
WHILE we are yet to ascertain whether aerosols are warming or cooling our planet, a scientific team has traced a new source: deciduous trees. These are plants that shed their leaves seasonally. So far aerosols were described as particles of pollutants like sulphur dioxide, black carbon (soot) and sea salt …
Most initiatives to slow global warming involve reducing carbon dioxide emissions. Little attention has been given to reducing emissions of the light-absorbing particles known as "black carbon" or the gases that form ozone--even though doing so would be easier and cheaper and have a more immediate effect. At last, world …
GLOBAL warming will mean that more people die from the heat. There will be a rise in sea levels, more malaria, starvation, and poverty. Concern has been great, but humanity has done very little that will actually prevent these outcomes. Carbon emissions have kept increasing, despite repeated promises of cuts. …
In this study, we have used multi-satellite data to retrieve aerosol loadings and carbon monoxide (CO) pollution over the Arabian Sea, caused due to anthropogenic activities over the Indo-Gangetic Plains (IGP) in India. Relatively high aerosol and CO loadings during 9
Galactic cosmic rays could influence Earth's cloudiness by creating aerosol particles that prompt cloud formation. That possible effect looks to be smaller than thought, but the story won't end there.
Atmospheric aerosols (a mixture of solid or liquid particles suspended in the air medium) are short-lived, with a residence time of about a week in the lower troposphere. Unlike the principal greenhouse gases, aerosols are more concentrated in the source regions and exhibit strong spatial and temporal variations.
With their focus on greenhouse gases, atmospheric scientists have largely overlooked lowly soot particles. But black carbon is now a hot topic among researchers and politicians. Jeff Tollefson investigates.
The ambient air we breathe is a mixture of nitrogen and oxygen with minor constituents, like CO2 and trace gases. Pollutants are substances which are not normally present, for example dust, smoke, industrial and automobile exhaust gaseous and particulate matter.
Environmental pollution study was undertaken in the stone crushers of Chitrakoot area, U.P., to assess the dust exposure risk in stone crushers. The stone available in the area is igneous rock based granite.
