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Thread: How much has the Ocean risen due to global Warming?

  1. #1 How much has the Ocean risen due to global Warming? 
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    What has been the rise in the level of the Ocean from Global Warming and how much further do we expect it to rise? Thanks, Joe L. Ogan


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  3. #2  
    WYSIWYG Moderator marnixR's Avatar
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    according to the European Environment Agency, global sea levels have risen by 17cm during the 20th century, and 3.8 cm since Kyoto (1997)


    "Reality is that which, when you stop believing in it, doesn't go away." (Philip K. Dick)
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    Forum Isotope Bunbury's Avatar
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    There are two components to sea level rise: thermal expansion, which is predicted with reasonable certainty to contribute about 25 cm by 2100, and melting of glaciers and ice sheets which can't be predicted with as much certainty but might add another 75 cm. The total rise by 2100 could be as much as 1 metre but it could also be less.

    I see that Wikipedia gives a probable maximum 0f 800 mm.

    The rise will not be uniform since land masses can rise and fall.
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    Is there any prediction or estimate as to how much further the ocean will rise if the icebergs continue to melt? Thanks, Joe L. Ogan
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    Forum Isotope Bunbury's Avatar
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    Quote Originally Posted by Joe L. Ogan
    Is there any prediction or estimate as to how much further the ocean will rise if the icebergs continue to melt? Thanks, Joe L. Ogan
    Icebergs are chunks of glaciers calved into the sea so they are included in my response above. The actual melting of icebergs doesn't affect sea level much. It's the initial removal of water substance from land to sea that matters.
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  7. #6 Is global Warming affacting the transfer of water from land 
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    Since melting of icebergs does not affect the level of the oceans much, is Global Warming causing a larger transfer of water from land to sea? I am trying to get an estimate of how much Global Warming is causing the sea level to rise. Thanks, Joe L. Ogan
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  8. #7  
    Veracity Vigilante inow's Avatar
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    Bunbury already responded above with an answer to that question, Joe. Below are my top four hits from a google search. That should get you what you need... If not, then just elaborate and explain with which part you would like more clarification.


    http://science.howstuffworks.com/global-warming4.htm
    http://www.sciencedaily.com/releases...0211172517.htm
    http://news.nationalgeographic.com/n..._earthday.html
    http://www.newscientist.com/article/...e-thought.html
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  9. #8 Re: Is global Warming affacting the transfer of water from l 
    Forum Isotope Bunbury's Avatar
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    Quote Originally Posted by Joe L. Ogan
    Since melting of icebergs does not affect the level of the oceans much, is Global Warming causing a larger transfer of water from land to sea? I am trying to get an estimate of how much Global Warming is causing the sea level to rise. Thanks, Joe L. Ogan
    I thought I had answered that: it's estimated that by the end of this century global warming might raise sea levels (global average) by up to 1 metre. There is much uncertainty and some predictions are higher. In the long term the rise could be 2 metres. It's also possible it could be considerably less, but many scientists seem to be thinking the higher estimates are more likely to be right.
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  10. #9  
    Geo
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    If the Greenland and West Antarctic Ice sheets were to melt, this would raise sea level ~ 14m.
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  11. #10  
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    Quote Originally Posted by Geo
    If the Greenland and West Antarctic Ice sheets were to melt, this would raise sea level ~ 14m.
    And that would leave quite a bit of ice left in the South pole. Complete melting would result in something like 60m rise according to USGS estimates.

    Also that rise would not be even around the globe. Near the Anarctica the rise would be less, in the Northern Hemisphere the sea level rise would be more.
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