Sentences with phrase «such aerosol pollution»

We always thought that — apart of course from soot [15 % of climate warming]-- such aerosol pollution creates cooling — as in the case of Chinese sulfur pollution and the Asian (Indian) brown cloud — and that air quality measures over recent decades in North America and Europe are now actually a major cause of increased warming speeds there — as the actual temperature catches up on the «CO2 baseline».

Not exact matches

Preliminary analyses show that most of the pollution was sulphate aerosols — along with dust and carbonaceous particles such as black carbon.

Aerosols in urban air pollution and from major industries such as the Canadian tar sands are of concern to scientists because they can affect regional climate patterns and have helped to warm the Arctic.

Additionally, the aerosol pollutant hypothesis ignores the fact that, despite the US Clean Air Act, the countries with the largest populations, such as India and China, did not adopt pollution controls until well into the 21st century.

Since pollution prevention laws in the US and other first world nations resulted in a lowering of such aerosols after the period in question, the steep runup in temperatures during the last 20 years of the 20th century is then explained by the unleashing of heretofore suppressed CO2 emissions, no longer inhibited by industrial aerosols.

Since pollution prevention laws in the US and other first world nations resulted in a lowering of such aerosols after the period in question,»

Everyday terms that hint at aerosol sources, such as smoke, ash, haze, dust, pollution, and soot are widely used as well.

The identification of other, sometimes more powerful, greenhouse gases such as methane, the contributions to atmospheric carbon dioxide from other human activities such as deforestation and cement manufacture, better understanding of the temperature - changing properties of atmospheric pollution such as sulphur emissions, aerosols and their importance in the post-1940s northern hemisphere cooling: the knowledge - base was increasing year by year.

S. Ichtiaque Rasool and Stephen Schneider of NASA, for example, modelled the effects of pollution in the form of aerosols and sulphur emissions in the atmosphere and discovered that a significant increase of such pollution could - possibly - lead to a cooling episode.

Such forcings include greenhouse gases, volcanoes, solar activity and air pollution — for example, aerosols from coal burning, smog and volatile organics.

Warming from decade to decade can also be affected by human factors such as variations in the emissions, from coal - fired power plants and other pollution sources, of greenhouse gases and of aerosols (airborne particles that can have both warming and cooling effects).