Is the ocean broken?

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

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  1. gonzo
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    gonzo Senior Member

    Wikipedia :)
     
  2. hoytedow
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    hoytedow Carbon Based Life Form

    Get your eyes on the right target. Climate isn't our biggest threat. Blind obedience is.
     
  3. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Climate change could make toxic algal blooms in our oceans more deadly
    • Algal blooms can be caused by natural upwelling of nutrients, or from human sources of nutrients such as fertilizers or sewerage runoff
    • Warmer, more acidic ocean waters (due to higher carbon dioxide levels) may increase both the frequency and toxicity of blooms
    • In particular, the toxic genus Pseudo-nitzschia grows fastest in warmer water, and in more acidic water they make more toxins per cell
    • Atmospheric warming also increases toxin-producing algal blooms in freshwater, which can then be transported into coastal waters
     
  4. hoytedow
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    hoytedow Carbon Based Life Form

    Climate change could also make toxic blooms less deadly.
    Look at "can be, may, can". It's just guessing.
     
  5. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Temperatures in the Arctic are astonishingly warmer than they should be
    • For several years now, especially in the autumn, temperatures in the Arctic are astonishingly warmer than they should be
    • It's becoming an annual reminder of the rapid climate change observed in the Arctic
    • The pace of global warming is the fastest we have seen in millions of years
    • The rapid warming trend in the Arctic is resulting in both sea ice extent and sea ice volume decreasing quickly

    Temperature anomaly for November 26, 2020

    [​IMG]
    Climate Reanalyzer https://climatereanalyzer.org/wx/DailySummary/#t2anom

    [​IMG]
    Charctic Interactive Sea Ice Graph | Arctic Sea Ice News and Analysis http://nsidc.org/arcticseaicenews/charctic-interactive-sea-ice-graph/
     
  6. hoytedow
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    hoytedow Carbon Based Life Form

  7. hoytedow
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    hoytedow Carbon Based Life Form

  8. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Emissions Could Add 15 Inches to 2100 Sea Level Rise, NASA-Led Study Finds
    • An international study has generated new estimates of how much melting ice sheets could have on global sea levels by 2100
    • If greenhouse gas emissions continue apace, Greenland and Antarctica’s ice sheets could together contribute more than 15 inches
    • This is in addition to what already will be lost from the ice sheet due to warming temperatures between pre-industrial times and now
    • Meltwater from ice sheets only contribute about a third of the total global sea level rise
     
  9. hoytedow
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    hoytedow Carbon Based Life Form

    Or, emissions could block insolation, resulting in a net temperature loss, like from Mt. Pinatubo or Krakatoa for instance.
     
  10. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Not sure what secret, juicy tidbit we are suppose to learn from the good Professor's two-year-old post, but we are well past the Solar Minimum and solar activity is on the increase -- right on schedule, just as it typically does.

    Solar Cycle 25 Is Here. NASA, NOAA Scientists Explain What That Means

    Sept. 15, 2020

    The Solar Cycle 25 Prediction Panel, an international group of experts co-sponsored by NASA and NOAA, announced that solar minimum occurred in December 2019, marking the start of a new solar cycle. Because our Sun is so variable, it can take months after the fact to declare this event. Scientists use sunspots to track solar cycle progress; the dark blotches on the Sun are associated with solar activity, often as the origins for giant explosions – such as solar flares or coronal mass ejections – which can spew light, energy, and solar material into space.

    “As we emerge from solar minimum and approach Cycle 25’s maximum, it is important to remember solar activity never stops; it changes form as the pendulum swings,” said Lika Guhathakurta, solar scientist at the Heliophysics Division at NASA Headquarters in Washington.
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

    What Will Solar Cycle 25 Look Like?

    ....If Solar Cycle 25 meets the panel’s predictions, it should be weaker than average. Cycle 25 is also expected to end a longer trend over the past four decades, in which the magnetic field at the Sun’s poles were gradually weakening. As a result, the solar cycles have been steadily weaker too. If Solar Cycle 25 sees an end to this waning, it would quell speculations that the Sun might enter a grand solar minimum, a decades-to-centuries long stretch of little solar activity. The last such minimum — known as the Maunder minimum — occurred in the middle of what’s known as the Little Ice Age from the 13th to 19th centuries, causing erroneous beliefs that another grand minimum could lead to global cooling.

    “There is no indication that we are currently approaching a Maunder-type minimum in solar activity,” Upton said. But even if the Sun dropped into a grand minimum, there’s no reason to think Earth would undergo another Ice Age; not only do scientists theorize that the Little Ice Age occurred for other reasons, but in our contemporary world, greenhouse gases far surpass the Sun’s effects when it comes to changes in Earth’s climate.....​
     
  11. hoytedow
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    hoytedow Carbon Based Life Form

    It's cold in them there hills. Looking for a boat. None nearby. Peanut helps to search. 20201127_155718~2.jpg
     
  12. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Climate Change Is Making Winter Ice More Dangerous
    • Winter drowning are increasing exponentially in areas with warmer winters
    • Some of the sharpest increases were in areas where Indigenous customs and livelihood require extended time on ice
    • Lack of sustained cold causes ice thaws, which can stay that way for the remainder of the cold season.
    • More cold-weather drownings occur in spring, when daily low temperatures increase too much to support stable ice structure

    The study was published in the journal PLoS One,
     
  13. gonzo
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    gonzo Senior Member

    Another false claim. The article says "there is the potential". In short, there is no documentation that the number of drownings has increased. At least you are consistent on the nonsense and made up factoids.
     
  14. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    In the abstract of the study the researchers said:

    Our findings indicate the potential for increased human mortality with warmer winter air temperatures.

    I'm not sure why you think this is something they are making a "claim" about. And I certainly don't understand why you think this is false.
    [​IMG]
    These two graphs clearly indicate that there is a trend for more drownings when there are warmer winters (until temperatures become so warm that there is little to no ice -- note Japan and Germany). And we know that winter temperatures are increasing over time, especially in the Arctic and sub-Arctic.
    Why thank you. I do try and be consistent. :)
     

  15. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Arctic Animals’ Movement Patterns are Shifting in Different Ways as the Climate Changes
    • Changes in seasonal timing are already starting – although the shifts differ between species and populations
    • Eagle migration has started about half a day earlier each year, causing a shift of nearly two weeks over 25 years
    • Caribou populations in the northern Arctic are having offspring earlier to coincide with the changes in their environment
    • For a number of predator/prey pairs, predator species seemed to respond to climate change differently than prey species
    The study was published in Science
     
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