The chart in the article you sent over represents 120,000 years of climate change, I thought we were talking about human's being the cause of it?
I'm aware the Earth is on the upside of a warming trend, however I don't think it's because human trash and CO2 emissions are the biggest factor. "For example, as Earth was emerging out of the last glacial cycle, the warming trend was interrupted 12,800 years ago when temperatures dropped dramatically in only several decades. A mere 1,300 years later, temperatures locally spiked as much as 20°F (11°C) within just several years. Sudden changes like this occurred at least 24 times during the past 100,000 years. In a relative sense, we are in a time of unusually stable temperatures todayhow long will it last?" Not sure I'd count the 300 yrs of surface temp logs as heavily as I would the ice core readings. A few hundred thousand years of evidence through core samples from the sea floor and north and south poles is a much more accurate way to measure. But we have detailed accurate records going back 30,000 years in the Greenland ice sheets. ( http://www.sciencedaily.com/releases/2013/01/130123133612.htm). Moreover there is currently an ongoing project to transcribe the logs of British Navy ships going back to the early 1700's. One of the daily requirements of the log entries was to record time, location and temperature. This is about 300 years of detailed surface temperatures for the last 300 years. How much more time do you need? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-community/message.cfm/messageid:363264 Subscription: http://www.houseoffusion.com/groups/cf-community/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-community/unsubscribe.cfm
