Leon lcb11211@swbelldotnet writes:
On 1/14/2013 4:22 AM, Dave wrote:
On Mon, 14 Jan 2013 03:34:45 -0600, Leon wrote:
And those that believe that are actually gullible enough to believe that
the earth should not be warming. Since when is global cooling better for
food production? Think the farmers care when their crops freeze?

It's not that global warming exists, it's the rate that it's happening
and the rate of increase caused by humanity.



So what brought us out of the "ice age"

Milankovitch cycles.

There's little doubt that the planet has warmed in the past
100 years. It is the magnitude of the warming and the cause of
the warming that disputed. There is little reliable data prior
to 1900 for surface and sea-surface temperatures. There is little
data prior to 1970 regarding sea-ice extent and area.

As for Han's 20-foot seawalls in Houston, one must realize that even
were 100% of the sea ice (e.g. arctic ice) to melt, sea-level wouldn't change. For sea-level
to rise substantially, glacial ice and landborne ice (e.g. the Greenland and Antarctica
ice caps) would need to melt. The best estimates are that the
Antarctica ice cap would take several thousand years to melt completely at
a much higher temperature that even the IPCC predicts for the next hundred
years or so (and their predictions have been much higher than has actually
been observed since the first and second IPCC reports).

Sea level is a function of the temperature of the water (water expands as
it warms), isostatic rebound (much shoreline is still rebounding from the
ice cover in the last ice age), wind/currents (sea level is higher on windward side
than leeward side), fresh-water influx, glacial melting et alia.