Posted on 06/06/2013 12:55:10 AM PDT by neverdem
The most widely feared consequence of global warming appears to be sea level rise (SLR). Environmental advocacy groups are polluting the airwaves and internet with lurid images of flooding of Bangladesh and Pacific islands, and raising the specter of hundreds of millions of environmental refugees. Even sober scientists...
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The first clue that there might be something amiss with the IPCC logic comes from the IPCC report itself. According to this authoritative source, the contribution to SLR of the past century comes mainly from three sources: (i) thermal expansion of the warming ocean contributed about 4 cm; (ii) the melting of continental glaciers about 3.5 cm. [Note that the melting of floating sea ice does not raise SL] (iii) the polar regions, on the other hand, produced a slight net lowering of sea level, with most of it coming from the Antarctic [IPCC 1996; Table 7.3]. (The mechanism is intuitively easy to understand but difficult to calculate: A warming ocean evaporates more water, and some of it rains out in the Polar Regions, thus transferring water from the ocean into snow and ice at the polar ice caps.)
The major new result here is that when one simply adds up all these estimated contributions (neglecting the large uncertainties), they account for only about 20 percent of the observed rise of 18 cm. The temperature rise since 1900 cannot account for the observed SLR. Something is missing here...
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NB: This essay ignores many less important features of global SLR, such as mining of ground water and construction of dams. It also ignores important regional and local effects that depend on isostatic adjustments, ocean currents and wind patterns, land subsidence, etc. Efforts are underway to harmonize conflicting data from tidal gauges and from direct measurements of the ocean surface by satellites.
(Excerpt) Read more at americanthinker.com ...
It would certainly help, as a warmer atmosphere can hold more water.
Keep in mind that I don’t believe much in the idea that man is the primary driver when I say that.
A German university did a review of how more water would affect levels...the curious result is that geography takes over and it’s not really displacing an inch throughout the world. Some places....it might be a quarter of inch in the water level being up, and some places it might be three inches up. Lakes might hold more water than releasing it to the oceans. New lakes might come into existence. So it’s not exactly a pure science.
Much of the supposed increase is supposed to come from the ice that currently sits on land. As it melts, it will drain into the ocean and those currently submersed lands will rise up making the problem worse
My thought is that a warmer earth cannot be too bad, even if we did lose some coastline as a result. Much inhospitable terrain will become hospitable with more moisture.
There’s no such thing as proveable sea rising going on ,,, NONE. And there is no reasonable way to even measure it. What is it exactly measured against?? A constantly changing seafloor that is built of the earth’s crust, floating on moving tectonic plates?
They are measuring THAT to a quarter inch? BS. Pure 100% gold plated BS.
Possibly - if only there was such a thing as “Global Warming”, but... it’s SCIENCE FICTION!!!
...and they'll probably blame that on SUVs too.
I have lived on the Potomac River most of my life and the water is rising. It didn’t start yesterday it has been going on for at least 50 years that I have noticed it, and it will be going on for another 50 more than likely.
Mankind trying to stop it is as stupid as thinking that man caused it.
With all the satellites dodging space junk out there, you would think there are a few measurements we have figured out by now... What's the diameter of Earth at furthest expanse of atmosphere? Does it change? What's the diameter of Earth at sea level? Does it change? Since nothing is really static, is the Earth getting larger or smaller? Would that have any affect on anything?
That depends on what's being eroded, what activities are taking place that increase or decrease erosion, etc.
Currently the Potomac river flood way is silting up. That raises the average water level.
There's also a slow rise of the entire basin as the mantle recovers from the gigantic meteor strike tens of millions of years back that created the Delmarva peninsula (and my front yard). Add to that another slow mantle recovery to the Norh and West which is in response to the loss of the vast glacial sheet, and next thing you know, everything is up in the air! Raise the bottom of a river and the top rises as well!
That makes sense, I know a lot of channels are silting over and the sand bars are growing. Sand has covered most of the good oyster bars and they need a good working, but few Rivermen are left and the state will not allow dredging.
We need another tropical storm like Agnes. Except for the deaths, it definitely helped clear up some problems with bridges in he area ~ the Three Sisters Bridge, for example, disappeared ENTIRELY ~ but the bottom of the river was scoured of silt, and a great deal of the Bay itself was scoured. The normal salnity level was restored!
Globull warming does not exist... this question is a waste of time and money and simply promotes a communist lie to control every facet of our lives.
LLS
LOL!! I can picture someone explaining the above over, and over, and over to a liberal "eco-scientist".
I will argue that man made global warming doesn’t exist.
There is however strong evidence that warming over much of the earth has occurred and has been tracked by the US government for at least 123 years.
Part of that evidence can be seen by any one at the Exit Glacier National Park in Alaska. As you approach the visitor center, perhaps 2 miles from the toe of the current glacier, there is a sign 1896. That is the location of the toe in 1896. As you proceed, there are other dated signs plotting the toe recession over time.
The glacier is a solid state record of temperature change. The toe plots recorded on the ground are evidence of warming over time. It is my understanding that the toe plot was in existence prior to the man made global warming scam hysteria.
The warming noted was prior to the current CO2 related scams and thus argue against the effects of man on warming. The ice melt is attributed to warming having natural climatic cause.
The alarmists just can not make up their minds, can they?
They missed out post-glacial rebound. In many places, the land is still expanding after shrugging off the weight of the ice-mantle at the end of the last Ice Age.
Sorry, probably didn’t need to ask that. Just read your later posting about oyster beds, etc ...
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