Wednesday, March 14, 2012

World Headlines: Shaw Capital Management - Livejournal

http://dionsuddle.livejournal.com/3234.html


A new study led by a NASA  scientist features 14 key air pollution control measures that, if implemented, could sluggish the pace of global warming, improve health and increased agricultural production.
The research, led by Drew Shindell of NASA’s Goddard Institute for Space Studies (GISS) in New York City, found out that focusing on these measures could slow mean global warming 0.9 ºF (0.5ºC) by 2050, boost global crop yields by up to 135 million metric tons per season and could stop hundreds of thousands of premature deaths each in every year. While all regions of the world would benefit, countries in Asia and the Middle East would see the biggest health and agricultural gains from emissions reductions.
“We’ve shown that implementing specific practical emissions reductions chosen to maximize climate benefits also would have important ‘win-win’ benefits for human health and agriculture,” said Shindell. Shindell together with the international team considered about 400 control measures based on technologies assessed by the International Institute for Applied Systems Analysis in Laxenburg, Austria. According to Shaw Capital Management News, the new study centers on 14 measures with the utmost climate benefit. All 14 would restrain the release of either black carbon or methane, pollutants that exacerbate climate change and human or plant health, either directly or by leading to ozone structure.
Methane, a colorless and flammable substance that is a major constituent of natural gas, is both a potent greenhouse gas and an important precursor to ground-level ozone. Ozone, a key component of smog and also a greenhouse gas, damages crops and human health.
While carbon dioxide is the primary driver of global warming over the long term, limiting black carbon and methane are complementary actions that would have a more immediate impact because these two pollutants circulate out of the atmosphere more quickly.
Black carbon, a product of burning fossil fuels or biomass such as wood or dung, can deteriorate a large number of respiratory and cardiovascular diseases. The small particles also absorb radiation from the sun causing the atmosphere to warm and rainfall patterns to shift. In addition, they darken ice and snow, reducing their reflectivity and hastening global warming.
Shindell and his team concluded that these control measures would provide the greatest protection against global warming to Russia, Tajikistan and Kyrgyzstan, countries with large areas of snow or ice cover. Iran, Pakistan and Jordan would encounter the most improvement in agricultural production. Southern Asia and the Sahel region of Africa would see the most beneficial changes to precipitation patterns.
The south Asian countries of India, Bangladesh and Nepal would see the largest reductions in premature deaths. The study estimates that globally between 700,000 and 4.7 million premature deaths could be prevented each year.
Black carbon and methane have many sources. As being mentioned on Shaw Capital Management News, Plummeting emissions would have needed of that societies make multiple infrastructure upgrades. For methane, the key strategies the scientists considered were capturing gas escaping from coal mines and oil and natural gas facilities, as well as dipping leakage from long-distance pipelines, preventing emissions from city landfills, upgrading wastewater treatment plants, aerating rice paddies more, and controlling emissions from manure on farms.
For black carbon, the strategies analyzed include putting up filters in diesel vehicles, keeping high-emitting vehicles off the road, upgrading cooking stoves and boilers to cleaner burning types, installing more efficient kilns for brick production, upgrading coke ovens and banning agricultural burning.
The scientists used computer models developed at GISS and the Max Planck Institute for Meteorology in Hamburg, Germany, to represent the impact of emissions reductions. The models showed extensive benefits from the methane reduction for the reason that it is evenly distributed throughout the atmosphere. Based from the Shaw Capital Management News, Black carbon falls out of the atmosphere after a few days so the benefits are stronger in certain regions, especially ones with large amounts of snow and ice.
“Protecting public health and food supplies may take precedence over avoiding climate change in most countries, but knowing that these measures also mitigate climate change may help motivate policies to put them into practice,” Shindell said. The new study builds on a United Nations Environment Program/World Meteorological Organization report, also led by Shindell, published last year.
“The scientific case for fast action on these so-called ‘short-lived climate forcers’ has been steadily built over more than a decade, and this study provides further focused and compelling analysis of the likely benefits at the national and regional level,” said United Nations Environment Program Executive Director Achim Steiner.

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