On Fri, Dec 19, 2008 at 7:19 PM, Sam <[email protected]> wrote: > Looks like it goes up and down. Right now it's going down > > Do you know if it'll continue going up or down? > > How about El Nina and Nino? > > What about that little ice age just before the temps you posted? > Good think the temp changed. > > There are cycles at work we just may not understand. Who knows. Maybe one huge valcanic eruption would whip us out. Are we playing a part in warming the earth? maybe. Do forest fires warm the earth? Does methane from cows? Does burning callories typing?
Outside of this, we only go back so far in much of our observations. I'm no scientist but certainly there must be some truth to cycles. Maybe that Mayan calendar ending in 2012 has some incite for us all :-) http://en.wikipedia.org/wiki/Global_warming Pre-human climate variations Earth has experienced warming and cooling many times in the past. The recent Antarctic EPICA ice core spans 800,000 years, including eight glacial cycles timed by orbital variations with interglacial warm periods comparable to present temperatures.[69] A rapid buildup of greenhouse gases amplified warming in the early Jurassic period (about 180 million years ago), with average temperatures rising by 5 °C (9 °F). Research by the Open University indicates that the warming caused the rate of rock weathering to increase by 400%. As such weathering locks away carbon in calcite and dolomite, CO2 levels dropped back to normal over roughly the next 150,000 years.[70] Sudden releases of methane from clathrate compounds (the clathrate gun hypothesis) have been hypothesized as both a cause for and an effect of other warming events in the distant past, including the PermianTriassic extinction event (about 251 million years ago) and the PaleoceneEocene Thermal Maximum (about 55 million years ago). ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;207172674;29440083;f Archive: http://www.houseoffusion.com/groups/cf-community/message.cfm/messageid:283121 Subscription: http://www.houseoffusion.com/groups/cf-community/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.5
