37 replies to this topic Post Order

[DJR]

TNT1, on 25 July 2012 - 01:39 , said:

That's all fine and well, but what did nasa's daughter say?

Sharp again today? Be careful! Accidents happen.

[TNT1]

DJR, on 25 July 2012 - 01:56 , said:

Sharp again today? Be careful! Accidents happen.

It's the medication talking...

[gogo@]

flymango, on 25 July 2012 - 01:43 , said:

Don't know my facts at all but seem to remember reading that the ice melting has a significant impact on the Gulfstream by changing the temperature flows of the ocean up and down the Atlantic with severe climatic impacts and on fisheries and agriculture in both Europe and North America.

This is the thermohaline circulation system, which depends on the temperature of water at the poles and equator and is affected by the mix of fresh (glacier) and salt (ocean) water...
Large ice shelfs cracking up and adding to it will disrupt this system.
No doubt there are arguments against that too. Like we like all a good rainy English summer and forgetting the extensive and repeated wild fires and droughts in N America which decrease food production and increase prices.

This from Wikipedia:
http://en.m.wikipedi...ation#section_2

In April 2004, the hypothesis that the Gulf Stream is switching off received a boost when a retrospective analysis of U.S. satellite data seemed to show a slowing of the North Atlantic Gyre, the northern swirl of the Gulf Stream.[7]

In May 2005, Peter Wadhams reported to The Times of London about the results of investigations in a submarine under the Arctic ice sheet measuring the giant chimneys of cold dense water, in which the cold dense water normally sinks down to the sea bed and is replaced by warm water, forming one of the engines of the North Atlantic Drift. He and his team found the chimneys to have virtually disappeared. Normally there are seven to twelve giant columns, but Wadhams found only two giant columns, both extremely weak.[8][9]

In 2008, Vage et al. reported "the return of deep convection to the subpolar gyre in both the Labrador and Irminger seas in the winter of 2007–2008," employing "profiling float data from the Argo program to document deep mixing," and "a variety of in situ, satellite and reanalysis data" to set the context for the phenomenon. This might have a lot to do with the observations of variations in cold water chimney behaviour.[10]

In January 2010, the Gulf Stream briefly connected with the West Greenland Current after fluctuating for a few weeks due to an extreme negative phase of the Arctic oscillation, temporarily diverting it west of Greenland.[11][12]

[HaydenWilson]

TNT1, on 25 July 2012 - 01:54 , said:

And African? Continue as God's toilet bowl?

the usual, droughts flooding, famine.

but mostly droughts with increased temperatures around the latitudes (ie dry areas get drier)

most of south africa is projected to receive more rain than usual but in fewer rain events so we are going to have some awesome thunder storms on the highveld but fewer of them. cape town may be in trouble as will the wine due to shifting rainfall patterns

[gogo@]

flymango, on 25 July 2012 - 01:54 , said:

We do need more science to support the theories. Problem is though, we may not have enough time to turn things around by the time the facts are proven. So whilst arguments for now are based on probabilities and hypotheses, one thing is for certain - the world's economic advances and growth are the direct result of increasing thermal energy systems that enhance mobility of our transport systems.

We have a funny habit of arguing about causes when it's way past the time for doing something.

Have you read this article in Rolling Stone by Bill McKibben?

Global Warming's Terrifying New Math
JULY 19, 2012 | 9:35AM EDT

A look at global warming and the petroleum industry in light of the recent carbon tracker report.

http://m.rollingston...w-math-20120719

[Rob7x]

flymango, on 25 July 2012 - 01:43 , said:

Don't know my facts at all but seem to remember reading that the ice melting has a significant impact on the Gulfstream by changing the temperature flows of the ocean up and down the Atlantic with severe climatic impacts and on fisheries and agriculture in both Europe and North America.

Yes, forgot about that actually. Has to do with salinity or something like that of the sea water. The fresh water from the ice sheets shuts off the current. The current is the reason why Uk is much warmer than Canada even though they are on the same line of latitude, as the current shuttles warm water from the Gulf towards Europe.