Is the ocean broken?

Discussion in 'All Things Boats & Boating' started by daiquiri, Oct 24, 2013.

  1. hoytedow
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    hoytedow Senior Member

    Laugh all you want. You admitted you lack physical knowledge. Air near the earth is under more pressure. Pressure adds heat. Heat makes the air want to rise as it is less dense. As it rises the pressure decreases which causes the temperature to drop which deprives the air of its load carrying capacity causing precipitation. This loss of heat in the air allows it to regain its density which is why the leading edge of a thunderstorm produces downdrafts of cooled air. Dangerous around airfields.
     
  2. hoytedow
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    hoytedow Senior Member

  3. Will Gilmore
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    Will Gilmore Senior Member

    Are we talking about a loss of chemical energy to heat? Potential mechanical energy?
    If we are to believe greenhouse gasses work to trap heat from light as it bounces back out towards outer space, then we have to consider the nature of radiant heat (infrared) vs conductive heat. Conductive heat requires a transfer between mater that comes in contact or near contact. Thus, if both instances of mater are within the system, overall heat and energy levels remain unchanged. With radiant heat, the energy loss may easily leave the system under consideration (the Earth and its atmosphere, in this case), resulting in a net loss.

    We don't feel the warmth of something that doesn't give up its energy as heat. However, we do feel warmth when something stops its loss from our measurement sensors. Insulation feels warm, but has no warmth imbued in it.

    -Will (Dragonfly)
     
  4. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Too bad there isn't a physicist reading this thread to help us out. I'm guessing that the loss of energy when vibrating liquid water molecules (say) go to the less energetic state of crystalline ice results in a loss of kinetic mechanical energy.
     
  5. hoytedow
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    hoytedow Senior Member

    Last edited: Jan 14, 2021
  6. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Bill Gates: Climate change could be more devastating than Covid-19 pandemic
    • “As awful as this pandemic is, climate change could be worse.”
    • "But in just a few decades, the same description [that COVID kills people and causes economic disruption] will fit another global crisis: climate change.”
    • greenhouse gas emissions still haven’t been reduced enough to stave off the worst ramifications, Gates said.
    • "We cannot get to zero emissions simply—or even mostly—by flying and driving less.”
    • “Unlike the novel coronavirus....It will take decades to develop and deploy all the clean-energy inventions we need,”
    • The United States needs to have the equivalent of the National Institutes of Health (NIH) for energy innovation
    • "The federal government also needs to invest more money in science and innovation
    • "Only 0.7% of our [gross domestic product] is spent on federal research and development,” Schmidt said. “For context, science funding hasn’t been that low since before Sputnik.”
     
  7. hoytedow
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    hoytedow Senior Member

    Bill Gates wants to depopulate the Earth. Why would you believe he has your best interests in mind? You are part of the population, are you not?
     
  8. Will Gilmore
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    Will Gilmore Senior Member

  9. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Severe climate-driven loss of native molluscs reported off Israel’s coast
    • The eastern Mediterranean is one of the fastest warming places on Earth
    • Molluscs along the coast of Israel have collapsed by about 90% in recent decades because they cannot tolerate the increasingly hot water
    • The sharp decline of shallow subtidal invertebrates is likely to spread westward to Greece and beyond as global temperatures increased
    • Studies of the coastline in the 1970s and 80s showed healthy waters
    • “The sea is completely changing from temperate Mediterranean to impoverished tropical. This turnover is rapid and in progress. It has not yet reached a stable state.”
    • “This is the largest climate-driven regional-scale diversity loss in the oceans documented to date,” the paper says.
    The paper was published in the Proceedings of the Royal Society B journal
     
  10. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    I can think of one or two people whose absence I wouldn't miss. <laugh>
     
  11. hoytedow
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    hoytedow Senior Member

    Who?
     
  12. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    You worried?
     
  13. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Earth to reach temperature tipping point in next 20 to 30 years, new study finds
    • Earth's ability to absorb a third of human-caused carbon emissions through plants could be halved within the next two decades at current rate of warming
    • Ecosystems pull in carbon dioxide through photosynthesis and release it back to the atmosphere via the respiration of microbes and plants
    • In the past the biosphere has generally taken in more carbon than it has released, mitigating climate change
    • Studies shows photosynthesis above critical temperature threshold slows in nearly every biome across the globe
    • The temperature "peaks" for carbon uptake are 18 degrees C for the more widespread C3 plants and 28 degrees C for C4 plants
    • These temperatures are already being exceeded in nature, but research saw no temperature check on respiration
    • This means that in many biomes, continued warming will cause photosynthesis to decline while respiration rates rise exponentially, tipping the balance of ecosystems from carbon sink to carbon source and accelerating climate change
    • Up to half the terrestrial biosphere could experience temperatures beyond that productivity threshold by mid-century
    The new study was published in Science Advances
     
  14. hoytedow
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    hoytedow Senior Member

    Should I be?
     

  15. hoytedow
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    hoytedow Senior Member

    Beware of boondoggles.
     
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