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Keyword: atmosphere

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  • NASA Considers Magnetic Shield to Help Mars Grow Its Atmosphere

    03/01/2017 6:58:45 PM PST · by BenLurkin · 47 replies
    Popular Mechanics ^ | Mar 1, 2017 | Jay Bennett
    Such a shield could leave Mars in the relatively protected magnetotail of the magnetic field created by the object, allowing the Red Planet to slowly restore its atmosphere. About 90 percent of Mars's atmosphere was stripped away by solar particles in the lifetime of the planet, which was likely temperate and had surface water about 3.5 billion years ago. According to simulation models, such a shield could help Mars achieve half the atmospheric pressure of Earth in a matter of years. With protection from solar winds, frozen CO2 at Mars's polar ice caps would start to sublimate, or turn directly...
  • Concentration of CO2 in atmosphere hits new high: UN (El Nino, Bovines, Deplorables to blame)

    10/24/2016 3:05:34 PM PDT · by NormsRevenge · 49 replies
    AFP on Yahoo ^ | 10/24/16 | Marie-Noëlle BLESSIG
    Geneva (AFP) - The concentration of carbon dioxide (CO2) in the atmosphere has passed an ominous milestone, ushering the planet into "a new era" of climate change, the UN said Monday. For the first time on record, the amount of CO2 in the atmosphere averaged 400 parts per million (ppm) in 2015, the World Meteorological Organization (WMO) said in its latest Greenhouse Gas Bulletin. CO2, the main greenhouse gas driving climate change, has previously passed the 400 ppm threshold on certain months in specific locations but never on a globally averaged basis, WMO said. The UN agency also reported that...
  • Ancient bubbles in Australian rocks show early Earth's air weighed less (trunc)

    05/11/2016 12:34:28 AM PDT · by blueplum · 39 replies
    The Telegraph UK ^ | 10 May 2016 04:37am | Chiara Palazzo, Sydney
    Full title: Ancient bubbles in Australian rocks show early Earth's air weighed less than half today's atmosphere Air bubbles trapped in 2.7 billion-year-old Australian rock suggest the Earth's atmosphere weighed less than half of today and was much thinner than previously thought. Researchers analysed the size of air bubbles that formed at the top and bottom of lava flows along the Beasley River in Western Australia's Pilbara region almost three billion years ago and used the data to calculate the atmospheric pressure at the time. The results suggest that the air at the time exerted at most half the pressure...
  • Newly Discovered Star Has an Almost Pure Oxygen Atmosphere

    03/31/2016 4:35:11 PM PDT · by LibWhacker · 31 replies
    Popular Mechanics ^ | 3/31/16 | William Herkewitz
    But good luck breathing in the bone-crushing gravity.A newly discovered star is unlike any ever found. With an outermost layer of 99.9 percent pure oxygen, its atmosphere is the most oxygen-rich in the known universe. Heck, it makes Earth's meager 21 percent look downright suffocating. The strange stellar oddity is a radically new type of white dwarf star, and was discovered by a team of Brazilian astronomers led by Kepler de Souza Oliveira at the Federal University of Rio Grande do Sul in Brazil. The star is unique in the known pool of 32,000 white dwarf stars, and is the...
  • Study shows that increased atmospheric CO2 is greening the deserts [Is that a bad thing?]

    02/17/2016 9:03:50 AM PST · by SeekAndFind · 19 replies
    American Thinker ^ | 02/17/2016 | Thomas Lifson
    A funny thing happened on the way to the warmists’ nightmare: the Earth’s deserts have started to turn green.  The Supreme Court, in its infinite wisdom, may have ruled that carbon dioxide is a pollutant, but the Earth’s deserts metaphorically are filing a dissent.  On behalf of all carbon-based life forms  – which would be every living thing on the planet. Anthony Watts reports at Watt’s Up With That: Enhanced levels of carbon dioxide are likely cause of global dryland greening, study says From the “inconvenient truth” department and INDIANA UNIVERSITY: Enhanced levels of atmospheric carbon dioxide are a...
  • Cosmic Cycles, not Carbon Dioxide, Control Climate

    01/24/2016 8:32:58 AM PST · by Beave Meister · 25 replies
    The Heartland Institute ^ | 1/21/2016 | Viv Forbes
    Those who think the political war on carbon will cool the globe or keep climate stable need to study climate history. Temperatures on Earth dance to a cyclic rhythm every hour, every day, every month, every season, every year, and to every beat of the sun-spot and glacial cycles. The daily solar cycle causes continual changes in temperature for every spot on Earth. It produces the frosts at dawn, the mid-day heat and the cooling at sunset. It is regulated by rotation of the Earth. Superimposed on the daily solar cycle is the monthly lunar cycle, driven by the orbit...
  • Life on Earth likely started 4.1 billion years ago (shortened title)

    10/19/2015 3:04:57 PM PDT · by JimSEA · 83 replies
    Science Daily ^ | 10/19/2015 | UCLA Staff
    UCLA geochemists have found evidence that life likely existed on Earth at least 4.1 billion years ago -- 300 million years earlier than previous research suggested. The discovery indicates that life may have begun shortly after the planet formed 4.54 billion years ago. The graphite is older than the zircon containing it, the researchers said. They know the zircon is 4.1 billion years old, based on its ratio of uranium to lead; they don't know how much older the graphite is.The carbon contained in the zircon has a characteristic signature -- a specific ratio of carbon-12 to carbon-13 -- that...
  • Madonna: Atmosphere of intolerance in Europe 'feels like Nazi Germany'

    02/26/2015 5:34:03 PM PST · by Nachum · 73 replies ^ | 2/26/15 | staff
    Internationally-recognized pop music sensation Madonna on Thursday said anti-Semitism and "growing intolerance" in Europe, and especially in France, has reached a level that "feels like Nazi Germany." During an interview with Europe 1 radio that is set to be aired in-full on Friday morning, the pop diva said "anti-Semitism is at an all-time high," in France and Europe. Setting aside a fall off stage during her performance at a Brit Awards, the 56-year-old star expressed her concern over the "climate of extreme fear" that has surfaced across the European continent, and which she likened to the era during the rise...
  • Elusive atmospheric intermediates reveal some secrets

    04/12/2013 9:30:07 PM PDT · by neverdem · 11 replies
    Chemistry World ^ | 12 April 2013 | Melissae Fellet
    Scientists have found further evidence for the existence of an elusive intermediate implicated in chemical reactions that degrade atmospheric pollutants. A new method of directly detecting the simplest form of this intermediate, as well as more measurements of the intermediate’s reactivity, provide indications that atmospheric models need to improve how they account for them.More than 50 years ago, German chemist Rudolf Criegee proposed that alkenes in the atmosphere, released either by plants or human activities, degrade by reacting with ozone to form a cyclic ozonide. One of the products formed when this ozonide falls apart is a carbonyl oxide called...
  • Earth once had hazy methane atmosphere like ice-moon Titan--Microbial flatulence dominated ---

    07/30/2012 9:53:01 AM PDT · by Ernest_at_the_Beach · 14 replies
    The Register ^ | 19th March 2012 15:00 GMT | Lewis Page
    Billions of years ago, before Earth's atmosphere had oxygen, it periodically possessed a "haze" of organic chemicals including methane, boffins have discovered. During these periods the planet's air was more like that of Titan, ice moon of Saturn, than the stuff we breathe today. "Models have previously suggested that the Earth's early atmosphere could have been warmed by a layer of organic haze," says Dr Aubrey Zerkle of Newcastle uni. "Our geochemical analyses of marine sediments from this time period provide the first evidence for such an atmosphere." According to Zerkle and his colleagues, during the period 2.5 to 2.65...
  • Atmosphere Above Japan Heated Rapidly Before M9 Earthquake

    06/12/2011 11:28:56 AM PDT · by NorwegianViking · 11 replies
    MIT Technology Review ^ | 5/18/2011 | MIT Contributor
    Last year, we looked at some fascinating data from the DEMETER spacecraft showing a significant increase in ultra-low frequency radio signals before the magnitude 7 Haiti earthquake in January 2010 Today, Dimitar Ouzounov at the NASA Goddard Space Flight Centre in Maryland and a few buddies present the data from the Great Tohoku earthquake which devastated Japan on 11 March. Their results, although preliminary, are eye-opening. ...They say that before the M9 earthquake, the total electron content of the ionosphere increased dramatically over the epicentre, reaching a maximum three days before the quake struck. At the same time, satellite observations...
  • Atmosphere's self-cleaning capacity stable: study (Whew!! We can breathe again.)

    01/07/2011 10:37:57 AM PST · by NormsRevenge · 26 replies
    Yahoo ^ | 1/7/11 | AFP
    WASHINGTON (AFP) – An international team of researchers has found that the atmosphere's ability to cleanse itself of pollutants and other greenhouse gases, except carbon dioxide, is generally stable. The study, published in Friday's edition of the journal Science, comes amid a fierce debate over whether, as some experts believe, the atmosphere's self-cleaning ability was fragile and sensitive to environmental changes. The research team, which was led by the National Oceanic and Atmospheric Administration (NOAA), measured levels in the atmosphere of hydroxyl radicals, which play a key role in atmospheric chemistry. Levels of the agent only fluctuated a few percentage...
  • Earth's upper atmosphere shrinking, scientists say

    08/27/2010 11:33:22 AM PDT · by NormsRevenge · 50 replies
    AFP on Yahoo ^ | 8/27/10 | AFP
    WASHINGTON (AFP) – The upper reaches of Earth's atmosphere are unexpectedly shrinking and cooling due to lower ultraviolet radiation from the sun, US scientists said Thursday. The sun's energy output dropped to unusually low levels from 2007 to 2009, a significantly long spell with virtually no sunspots or solar storms, according to scientists from the National Center for Atmospheric Research in Boulder, Colorado. During that period, the thermosphere, whose altitude ranges from about 55 to 300 miles (90 to 500 kilometers), shrank and contracted from the sharp drop in ultraviolet radiation, said the study published in the American Geophysical Union's...
  • NASA Photo of the Day: Let There Be Light!

    08/16/2010 4:53:37 PM PDT · by EnjoyingLife · 4 replies ^ | January 3, 2010 | National Aeronautics and Space Administration (NASA)
    The International Space Station (ISS) was over the North Pacific Ocean (latitude 4.9, longitude -117.0) on January 3, 2010 at 12:27:52 GMT when this spectacular photo was taken by an astronaut aboard the ISS. Via (medium, large, huge)
  • New Experiments Rattle Space Weather Research

    06/13/2010 12:13:43 AM PDT · by neverdem · 9 replies · 655+ views
    ScienceNOW ^ | June 9, 2010 | Phil Berardelli
    Enlarge Image Light show. Auroral displays reveal the interaction between the solar wind particles and nitrogen molecules in Earth's upper atmosphere. Credit: NASA Scientists trying to confirm a long-standing model of atmospheric physics have inadvertently shaken one of the foundations of the field. New tests show that the model, used to interpret energy emissions in Earth's upper atmosphere, is seriously flawed. The findings should help researchers build a better picture of how our planet interacts with solar radiation and the particle stream called the solar wind, and they may give a similar boost to studies of the atmosphere on...
  • Bill Gates pays for ‘artificial’ clouds to beat greenhouse gases

    05/12/2010 8:26:26 AM PDT · by NYer · 59 replies · 789+ views
    Times Online ^ | May 8, 2010 | Ben Webster
    The first trials of controversial sunshielding technology are being planned after the United Nations failed to secure agreement on cutting greenhouse gases. Bill Gates, the Microsoft billionaire, is funding research into machines to suck up ten tonnes of seawater every second and spray it upwards. This would seed vast banks of white clouds to reflect the Sun’s rays away from Earth.The British and American scientists involved do not intend to wait for international rules on technology that deliberately alters the climate. They believe that the weak outcome of December’s climate summit in Copenhagen means that emissions will continue to rise...
  • No Rise of Atmospheric Carbon Dioxide Fraction in Past 160 Years, New Research Finds

    01/01/2010 9:44:47 AM PST · by artichokegrower · 35 replies · 1,506+ views
    Science Daily ^ | Dec. 31, 2009
    ScienceDaily (Dec. 31, 2009) — Most of the carbon dioxide emitted by human activity does not remain in the atmosphere, but is instead absorbed by the oceans and terrestrial ecosystems. In fact, only about 45 percent of emitted carbon dioxide stays in the atmosphere.
  • Earth's Upper Atmosphere Cooling Dramatically

    12/17/2009 5:00:34 PM PST · by KevinDavis · 49 replies · 2,077+ views ^ | 12/17/09 |
    SAN FRANCISCO — When the sun is relatively inactive — as it has been in recent years — the outermost layer of Earth's atmosphere cools dramatically, new observations find.
  • Tense atmosphere clouds climate talks

    12/14/2009 6:00:51 PM PST · by NormsRevenge · 9 replies · 337+ views
    AP on Yahoo ^ | 12/14/09 | Arthur Max - ap
    COPENHAGEN – The atmosphere at the U.N. climate conference grew more tense and divisive after talks were suspended for most of Monday's session — a sign of the developing nations' deep distrust of the promises by industrial countries to cut greenhouse gas emissions. ... The wrangle over emission reductions froze a timetable for government ministers to negotiate a host of complex issues. Though procedural in nature, the Africa-led suspension went to the core of suspicions by poor countries that wealthier ones were trying to soften their commitments and evade penalties for missing their targets. ... The negotiations were meant to...
  • Trees may cause global warming.

    "A team of researchers from the US, Denmark and New Zealand have discovered a process through which a prevalent biogenic nonmethane hydrocarbon compound emitted by trees—isoprene—forms atmospheric particulate matter (i.e., secondary organic aerosol). The results are published in the 7 August issue of the journal Science. Aerosols impact human health, due to their ability to penetrate deep into lungs, and impact Earth’s climate through the scattering and absorption of solar radiation and through serving as the nuclei on which clouds form, noted co-author Prof. John Seinfeld from Caltech. “So it is important to know where particles come from.” Emissions of...