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Keyword: aerosols

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  • CIDRAP: "We Believe There Is Scientific Evidence Ebola Has The Potential To Be Airborne"

    10/13/2014 1:06:03 PM PDT · by Rusty0604 · 47 replies
    Zerohedge ^ | 10/13/2014 | Tyler Durden
    When CDC Director Tim Frieden first announced, just a week ago and very erroneously, that he was "confident we will stop Ebola in its tracks here in the United States", he hardly anticipated facing the double humiliation of not only having the first person-to-person transmission of Ebola on US soil taking place within a week, but that said transmission would impact a supposedly protected healthcare worker. He certainly did not anticipate the violent public reaction that would result when, instead of taking blame for another epic CDC blunder, one which made many wonder if last night's Walking Dead season premier...
  • Geoengineering plan could have 'unintended' side effect (DoH! Alert!! Tropics rainfall down 30%)

    01/08/2014 10:03:02 AM PST · by NormsRevenge · 33 replies
    BBC News ^ | 1/8/14 | Matt McGrath
    Attempts to reverse the impacts of global warming by injecting reflective particles into the stratosphere could make matters worse, say researchers. A new study suggests the idea, seen as a last-ditch way to deal with runaway climate change, could cut rainfall in the tropics by 30%. This would have devastating impacts on rainforests in South America and Asia The research has been published in the journal Environmental Research Letters. The concept of curbing rising temperatures by blocking sunlight has been discussed by scientists for many years now. Some of the ideas have been dismissed as crazy notions, but others have...
  • Cleaner air may have brought more storms

    06/29/2013 2:36:27 PM PDT · by neverdem · 12 replies
    Science News ^ | June 24, 2013 | Cristy Gelling
    Pollution during the 20th century appears to have suppressed North Atlantic hurricanes The Clean Air Act, which has benefited breathing in many American cities over the last few decades, may have worsened the weather in some places. New climate simulations suggest that reducing the level of atmospheric aerosol particles produced by human activity might have been the main cause of a recent increase in tropical storm frequency in the North Atlantic. Aerosol levels have increased since the industrial revolution began, but there have been periods when emissions stalled or fell, such as the Great Depression, World War II and after...
  • Chinese aerosols stop global warming

    01/10/2013 2:43:17 AM PST · by Berlin_Freeper · 4 replies
    thesun.co.uk ^ | January 10, 2013 | BEN JACKSON
    GLOBAL warming is on a 20-year “plateau”, the UK’s top climate researchers have revealed. Sceptics celebrated this week when the Met Office acknowledged temperatures are only creeping slightly above highs the world hit in 1998 and will be much the same over the next five years. Even the forecasters’ harshest critics say this does not mean the world’s climate will stop heating up but it raises questions over what the scientists and their £30million super-computer think is really going on. THE Met Office have revealed that global warming appears to have STALLED. The upwardly surging arrow used on graphs warning...
  • Shocker:GISS... rapid warming in recent decades has been driven mainly by non-CO2 greenhouse gases”

    06/04/2012 10:10:31 AM PDT · by Ernest_at_the_Beach · 34 replies
    watts Up With That? ^ | June 3, 2012 | Anthony Watts
    Full TITLE: Shocker: The Hansen/GISS team paper that says: “we argue that rapid warming in recent decades has been driven mainly by non-CO2 greenhouse gases” Note: This will be a top post for a day or two, new stories will appear below this one – please scroll down. Also, If you have not already, vote in the WUWT Sea Ice Forecast Poll, which closes at noon today.============================================================No, this isn’t a joke, it isn’t a fake document, and it isn’t a misinterpretation. It is a paper published by Dr. James Hansen (and the GISS team) in PNAS (Proceedings of the National...
  • Stratospheric Pollution Helps Slow Global Warming (Good news: aerosol sprays are saving us)

    07/22/2011 1:46:03 PM PDT · by presidio9 · 21 replies
    Scientific American ^ | July 22, 2011 | David Biello
    Despite significant pyrotechnics and air travel disruption last year, the Icelandic volcano Eyjafjallajokull simply didn't put that many aerosols into the stratosphere. In contrast, the eruption of Mount Pinatubo in 1991, put 10 cubic kilometers of ash, gas and other materials into the sky, and cooled the planet for a year. Now, research suggests that for the past decade, such stratospheric aerosols—injected into the atmosphere by either recent volcanic eruptions or human activities such as coal burning—are slowing down global warming. "Aerosols acted to keep warming from being as big as it would have been," says atmospheric scientist John Daniel...
  • Will NASA's New 'Glory' Spacecraft Silence Climate-Change Deniers?

    01/12/2011 12:41:38 AM PST · by Cincinatus' Wife · 37 replies
    The Daily Galaxy News ^ | January 12, 2011 | If you find out, let us know
    Glory is a low Earth orbit scientific research satellite designed to collect data on the properties of aerosols, including black carbon, in the Earth's atmosphere and climate system, and to collect data on solar irradiance for the long-term effects on the Earth climate record. The new robotic probe is headed to the launch pad, aiming for a spot aboard what is called the A-train -- a fleet of Earth-orbiting spacecraft keeping tabs on the planet's changing climate. Coming to a topline conclusion about the treality of global warming will be a snap: Glory will measure the total amount of energy...
  • 'I boarded a plane with an aerosol can'

    01/04/2010 6:12:55 PM PST · by WmShirerAdmirer · 19 replies · 755+ views
    BBC NEWS ^ | January 4, 2010 | Colette Hume
    Colette Hume on board her flight to the US Security measures for flights inbound to America stepped up a gear following the attempted attack on a plane heading for the US on Christmas Day. How then was I was able to unwittingly carry a 200ml hairspray can - twice the liquid limit - onto a Qantas flight to the US, after two separate supposedly rigorous security checks? Let me make it clear, there was no intention to flout the rules. It wasn't an attempt to test the rigour of the new security. It was a mistake on my part to...
  • Soot warming 'maybe bigger than greenhouse gases' - NASA

    12/15/2009 9:56:07 PM PST · by Ernest_at_the_Beach · 53 replies · 1,388+ views
    The Register (UK) ^ | 15th December 2009 12:16 GMT | Lewis Page
    Forget Copenhagen CO2 cuts, tune your diesel properly Researchers from NASA's Goddard Space Flight Centre, also the home of famous carbopocalypse doom-prophet James Hansen, have repeated earlier assertions that atmospheric soot may be as important as greenhouse gases in driving global warming. This could be good news for humanity, as atmospheric soot levels would be much easier to reduce. Filtering soot out of exhausts from diesel engines and coal burners is simple compared to removing and sequestering CO2, and as an added benefit the effects would be rapid: soot doesn't persist in the atmosphere for long periods the way greenhouse...
  • Aerosols make methane more potent - Air pollution linked more closely to climate concerns.

    10/30/2009 6:12:16 PM PDT · by neverdem · 22 replies · 926+ views
    Nature News ^ | 29 October 2009 | Katharine Sanderson
    Aerosols' complicated influence on our climate just got more threatening: they could make methane a more potent greenhouse gas than previously realized, say climate modellers.Drew Shindell, at NASA Goddard Institute for Space Studies, New York, and colleagues ran a range of computerized models to show that methane's global warming potential is greater when combined with aerosols — atmospheric particles such as dust, sea salt, sulphates and black carbon. The International Panel on Climate Change (IPCC) and treaties such as the Kyoto Protocol assume methane to be, tonne-for-tonne, 25 times more potent than carbon dioxide at warming the planet. But the...
  • Climate Effects of Atmospheric Haze a Little Less... Hazy

    09/11/2009 10:35:25 PM PDT · by neverdem · 8 replies · 699+ views
    noaanews.noaa.gov ^ | September 9, 2009 | NA
    Scientists have used a new approach to sharpen the understanding of one of the most uncertain of mankind's influences on climate - the effects of atmospheric "haze," the tiny airborne particles from pollution, biomass burning, and other sources. High resolution (Credit: NOAA) The new observations-based study led by NOAA confirms that the particles ("aerosols") have the net effect of cooling the planet - in agreement with previous understanding - but arrives at the answer in a completely new way that is more straightforward, and has narrowed the uncertainties of the estimate. The findings appear in this week's Journal of Geophysical...
  • A little air pollution boosts vegetation’s carbon uptake

    04/27/2009 12:19:33 AM PDT · by neverdem · 7 replies · 547+ views
    Science News ^ | April 22nd, 2009 | Sid Perkins
    Aerosols bumped up world’s plant productivity by 25 percent in the 1960s and 1970s, new research suggests The world’s vegetation soaked up carbon dioxide more efficiently under the polluted skies of recent decades than it would have under a pristine atmosphere, a new analysis in the April 23 Nature suggests. The trend hints that relying on forests and other vegetation to sequester carbon may not be effective if skies continue to clear, researchers say. Major volcanic eruptions throw large quantities of aerosols, such as small bits of fractured rock and droplets of sulfuric acid, high into the atmosphere. Those particles...
  • The real story behind aerosol forcing of Arctic warming

    04/23/2009 8:38:35 PM PDT · by cogitator · 9 replies · 382+ views
    Real Climate ^ | April 21, 2009 | Drew Shindell
    1st paragraph (with link to abstract): "Our recent paper “Climate response to regional radiative forcing during the twentieth century”, has generated some interesting discussion (some of it very 'interesting' indeed). So this post is an attempt to give a better context to the methods and implications of the study." Yet more aerosols: Comment on Shindell and Faluvegi Most intriguing paragraph: "In the absence of increasing greenhouse gases, our large historical emissions of sulfate precursors would have led to substantial cooling from sulfate, and the subsequent reduction in emissions would have brought temperatures back towards their previous level. So reduced sulfate...
  • Aerosols May Drive a Significant Portion of Arctic Warming

    04/10/2009 1:57:00 AM PDT · by neverdem · 18 replies · 1,014+ views
    NASA ^ | 04.08.09 | NA
    Feature Aerosols May Drive a Significant Portion of Arctic Warming 04.08.09     Aerosols can influence climate directly by either reflecting or absorbing the sun's radiation as it moves through the atmosphere. The tiny airborne particles enter the atmosphere from sources such as industrial pollution, volcanoes and residential cooking stoves. Credit: NASA Goddard's Scientific Visualization Studio> Larger image Though greenhouse gases are invariably at the center of discussions about global climate change, new NASA research suggests that much of the atmospheric warming observed in the Arctic since 1976 may be due to changes in tiny airborne particles called aerosols....
  • Cleaner air to worsen droughts in Amazon: study

    05/07/2008 3:34:26 PM PDT · by rfp1234 · 9 replies · 145+ views
    AFP via Breitbart ^ | 5/4/2008 | AFP
    Curbing a notorious form of industrial pollution may ironically harm Amazonia, one of the world's natural treasures and a key buffer against global warming, a study released Wednesday has found. Its authors see a strong link between a decrease in sulphur dioxide emissions from coal-fired power plants and a rise in sea temperature in the northern Atlantic that was blamed for wreaking a devastating drought in western Amazonia in 2005. University of Exeter professor Peter Cox and colleagues created a computer model to simulate the impact of aerosols -- airborne particles that, like sulphur dioxide, are also spewed out by...
  • Can We Offset Global Warming By Geoengineering The Climate With Aerosols?

    02/17/2008 3:29:23 PM PST · by BeAllYouCanBe · 28 replies · 82+ views
    Science Daily ^ | February 17, 2008 | Authors: Philip J. Rasch and Danielle B. Coleman: National Center for Atmospheric Research, Boulder
    Can We Offset Global Warming By Geoengineering The Climate With Aerosols? Volcano eruption on Reunion Island. Should humans deliberately mimic the effect of volcanic aerosols to try to offset global warming? (Credit: iStockphoto/Julien Grondin) ScienceDaily (Feb. 17, 2008) — Concerned that energy system transformations are proceeding too slowly to avoid risks from dangerous human-induced climate change, many scientists are wondering whether geoengineering (the deliberate change of the Earth's climate) may help counteract global warming. Sulfate aerosols, commonly released by volcanoes, serve to scatter incoming solar energy in the stratosphere, preventing it from reaching the surface. To investigate the feasibility of...
  • Brown clouds boost global warming - Aerosols over Asia incriminated in Himalayan glacial melting.

    08/01/2007 9:19:43 PM PDT · by neverdem · 16 replies · 748+ views
    news@nature.com ^ | 1 August 2007 | Daniel Cressey
    Close window Published online: 1 August 2007; | doi:10.1038/news070730-6 Brown clouds boost global warmingAerosols over Asia incriminated in Himalayan glacial melting.Daniel Cressey Clouds of pollution sit over southern Asia for half the year.NASA/GODDARD SPACE FLIGHT CENTER/J. SCHMALTZ Tiny particles of pollution may be causing as much warming as greenhouse gases over southern Asia. The clouds of aerosol particles are contributing to the potentially devastating melting of Himalayan glaciers, say researchers. Using data from unmanned aircraft flying through 'brown clouds' of aerosol pollution over the Indian Ocean, US researchers found the zone of the atmosphere containing the clouds is warming...
  • Global-Warming Report Gets U.S. Emphasis

    02/03/2007 3:12:22 PM PST · by Tolerance Sucks Rocks · 23 replies · 733+ views
    Wall Street Journal ^ | February 3, 2007 | John J. Fialka
    WASHINGTON -- U.S. government scientists Friday said the long-term outlook for global warming may be more dire than suggested by this week's United Nations' report, which they say doesn't fully address the impact of clouds and melting glaciers. Recent evidence of accelerated melting of glaciers in Greenland and the Antarctic ice cap came too late to be included in the report released Thursday by the U.N.-sponsored Intergovernmental Panel on Climate Change. Glaciers are among the largest sources of fresh water in the world and are contributing to rising ocean levels. Rising sea levels could expose population centers bordering the ocean...
  • Tiny airborne particles are a major cause of climate change (Warming vs. cooling effects)

    07/20/2006 11:57:57 AM PDT · by DaveLoneRanger · 35 replies · 898+ views
    EurekAlert! News ^ | July 18, 2006 | Staff
    Rehovot, Israel -- July 17, 2006 – A scientist at the Weizmann Institute of Science and his colleagues caused a storm in the atmospheric community when they suggested a few years back that tiny airborne particles, known as aerosols, may be one of the main culprits causing climate change – having, on a local scale, an even greater impact than the greenhouse gases effect. Attempts to understand how these particles influence clouds have generated many uncertainties. A new paper by Dr. Ilan Koren of the Weizmann Institute Environmental Studies and Energy Research Department and Dr. Yoram Kauffman of the NASA/Goddard...
  • Volcanoes Helped Slow Ocean Warming Trend, Researchers Find

    02/13/2006 10:34:10 AM PST · by cogitator · 17 replies · 573+ views
    Terra Daily ^ | 01/13/2006 | Staff Writers
    Ocean temperatures might have risen even higher during the last century if it weren't for volcanoes that spewed ashes and aerosols into the upper atmosphere, researchers have found. The eruptions also offset a large percentage of sea level rise caused by human activity. Using 12 new state-of-the-art climate models, the researchers found that ocean warming and sea level rise in the 20th century were substantially reduced by the 1883 eruption of the Krakatoa volcano in Indonesia. Volcanic aerosols blocked sunlight and caused the ocean surface to cool. "That cooling penetrated into deeper layers of the ocean, where it remained for...
  • Haze Dynasty (pollution in China reducing sunlight at surface)

    01/18/2006 11:03:35 AM PST · by cogitator · 14 replies · 590+ views
    Terra Daily ^ | 1/18/2006 | Yun Qian
    China has darkened over the past half-century. Where has all the sunshine gone? The usual suspect, at least to a climatologist, would be cloud cover. But in the most comprehensive study to date of overcast versus cloud-free days in China, a team led by the Department of Energy's Pacific Northwest National Laboratory, reporting in the current advance online issue of Geophysical Research Letters, has found that cloud cover has been decreasing for the past 50 years. Eliminating clouds from the dimming equation now leaves little doubt that human activity, in the form of a nine-fold increase in fossil fuel emissions...
  • Aerosols cool more than expected - Researchers measure smog's effect on global warming.

    12/26/2005 1:23:04 PM PST · by neverdem · 23 replies · 886+ views
    news@nature.com ^ | 21 December 2005 | Quirin Schiermeier
    Close window Published online: 21 December 2005; | doi:10.1038/news0051219-11 Aerosols cool more than expectedResearchers measure smog's effect on counteracting global warming.Quirin Schiermeier Hot times: cities would be even warmer if not covered by a blanket of smog. © Punchstock Cleaning the air could accelerate global warming, according to a new study. The particles in the soot and haze from industrial and domestic fires, called aerosols, cause respiratory diseases and other health problems for people in polluted areas, including many Asian cities. But aerosols also dim the sky over land and sea, and so cool the planet. By scattering and...
  • China Warns Of Five-Fold Increase In Air Pollution In 15 Years

    10/25/2005 8:20:07 AM PDT · by cogitator · 39 replies · 1,115+ views
    TerraDaily ^ | 10/24/2005 | AFP
    China's rapid economic growth and industrialization is posing a major challenge to the environment with air pollution likely to rise five-fold in 15 years, officials warned Monday. "In the future 15 years, the population of China will reach 1.46 billion and the GDP will double, the pollution load will increase by four to five times according to the present resource consumption rate and pollution control level," said Zhang Lijun, vice minister of China's environmental agency SEPA. Zhang was speaking at an air pollution conference organized by the State Environmental Protection Administration (SEPA), the US Environmental Protection Agency, the environmental directorate...
  • Expert Finds Dandruff in Air Pollutants

    03/31/2005 1:35:43 PM PST · by anymouse · 7 replies · 879+ views
    Associated Press ^ | 3/31/05 | RANDOLPH E. SCHMID
    A researcher has discovered unexpectedly large amounts of dandruff and other flaking skin, fur, pollen and similar materials in air pollutants known as aerosols. Aerosols, tiny particles in the air, are widely studied because they are an important factor in regulating climate, variously absorbing heat to warm the air and reflecting sunlight to cool it. They are also important in forming rain and snow. But the amount of cellular material — bacteria, plant fragments, spores, fungi and so forth — had been thought to be only a small proportion compared with mineral dusts, clay and sea salt. Now, Ruprecht Jaenicke...
  • Antarctic Ozone Hole Smaller This Year - Scientists

    10/02/2004 8:57:20 PM PDT · by anymouse · 15 replies · 577+ views
    Reuters ^ | Fri Oct 1, 2004
    A gaping hole in the ozone layer over Antarctica appears to have shrunk by about 20 percent from last year's record-breaking size, New Zealand scientists said on Friday. The National Institute of Water & Atmospheric Research (NIWA) said its measurements backed up NASA satellite data showing the hole peaked at about 9 million sq miles compared with 11 million sq miles in 2003. The ozone layer sits about 9-19 miles above the earth, filtering harmful ultraviolet rays that can cause skin cancer. Industrial chemicals containing chlorine and bromine used in refrigerators and aerosols have been blamed for thinning the layer...
  • WORLD MAY BE DARKENING AS CLOUDS, AIR POLUTION DIM THE SUNS RAYS (ECO BARF)

    05/10/2004 7:29:47 AM PDT · by JesseHousman · 46 replies · 1,951+ views
    Miami Herald ^ | May. 09, 2004 | Robert S. Boyd
    WASHINGTON - Scientists call it "global dimming," little-known trend that may be making the world darker than it used to be. Thanks to thicker clouds and growing air pollution, much of the Earth's surface is receiving about 15 percent less sunlight than it did 50 years ago, according to Michael Roderick, a climate researcher at Australian National University in Canberra. "Global dimming means that the transmission of sunlight through the atmosphere is decreasing," Roderick said. "Just look out the window when you fly into New York or to California - it's dimmer," said Beate Liepert, a climatologist at the Lamont-Doherty...