Global Warming-Wayne
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Started by metmike - Sept. 26, 2018, 11:34 p.m.

Something is messed up with the forum and is making it impossible to respond to your original thread, so I started a new one.

                Global Warming            

                                       

                Started by wglassfo - Sept. 26, 2018, 9:14 p.m.            

                                        

So far this forum has told us that rising levels of Co2 is not dangerous. In fact we can experience much higher levels and everything is good. Faster plant growth, bigger yields etc. with warmer weather and C02 giving plants the best weather etc.

My question concerns increased global warming

My information is that global warming is fact

Global warming causes ice melt

Ice bergs that melt have very little affect on ocean levels due to the fact they already are, part of the ocean displacing water that when melted is almost the same volume

But ice glaciers that are land frozen are starting to move to the ocean

This ice will increase ocean levels

 So: Does global warming increase ocean levels, by melting artic ice, floating on water or land based glacier ice???. Seems to me this melting ice would increase ocean levels. If so, then how much of the planet is in danger from higher ocean levels, due to faster glacier ice melt or land based ice fields, or ice floating on water due to global warming.

It seems the artic is warming up faster than say Chicago. All the artic ice is not in Canada or Alaska. Russia has a very large slice of the artic. so it is a big area up there with lots of places for melting ice..

Comments
By metmike - Sept. 26, 2018, 11:36 p.m.
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Hi Wayne,

Arctic sea ice made it to its 2018 seasonal bottom a short while ago, as it always doess in September. It's hard to see the red line in there because its at around the same level as so many other years over the last decade. 

On the first graph below, it's easy to see the low point, in purple from 2012 and the 2nd lowest in orange from 2016. 

What does this mean? 

No question that there has been melting of sea ice over the last 30 years. However, predictions from 2007 that stated we would continue the "death spiral" and melt all of the Summer ice by 2015, have obviously not come to pass. The 2nd graph, also suggests that the Arctic sea ice extend has not changed much over the last decade....after melting during the previous 2 decades. 

By metmike - Sept. 26, 2018, 11:41 p.m.
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Here are a couple of recent articles:


Arctic sea ice melt has turned the corner for 2018

https://wattsupwiththat.com/2018/09/23/arctic-sea-ice-melt-has-turn-the-corner-for-2018/

Analysis suggests Arctic sea ice is more stable than thought

https://wattsupwiththat.com/2018/09/24/analysis-suggests-arctic-sea-ice-is-more-stable-than-thought/

Another Dis-alarming Analysis of Arctic Sea Ice

https://wattsupwiththat.com/2018/09/26/another-dis-alarming-analysis-of-arctic-sea-ice/

By metmike - Sept. 26, 2018, 11:46 p.m.
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Sea levels have been increasing since the last Ice Age ended. At a steady but slower rate over the last 8,000 years.

They have been increasing at around 1 inch/decade over the past 150 years(since the Little Ice Age ended).



https://curryja.files.wordpress.com/2011/07/post-glacial_sea_level.png

Over the past 2 decades, they may have increased just a tad faster. At this rate, the oceans will increase around 1 foot over the next century.

Not 10 or 20 feet..........1 foot.

By metmike - Sept. 27, 2018, 12:06 a.m.
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As you mentioned, ice that is already in the sea as in Arctic sea ice, does not cause the sea levels to increase when it melts.

Ice in Greenland(over land) and  in the Antarctic if it melts, will contribute to higher sea levels. 

Greenland Ice Sheet apparently gains mass for the 2nd year in a row

https://wattsupwiththat.com/2018/09/24/greenland-ice-sheet-apparently-gains-mass-for-the-2nd-year-in-a-row/

There is disagreement on whether the Antarctic is gaining or losing ice:


NASA glaciologist Jay Zwally puts the hammer down: ‘Antarctica is gaining ice’

https://wattsupwiththat.com/2018/06/15/nasa-glaciologist-jay-zwally-puts-the-hammer-down-antarctica-is-gaining-


The graph below suggests the Antarctic is losing ice.

https://neptune.gsfc.nasa.gov/csb/index.php?section=234

ice/

By metmike - Sept. 27, 2018, 12:10 a.m.
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Not much life on this planet would be effected by an increase of 12 inches in the sea levels over the next century. 

But there is a great deal of human life that built along the sea coasts around the world. This life is most concerned.