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Environment & Energy
In reply to the discussion: The E/E pocket reference guide [View all]OKIsItJustMe
(20,903 posts)5. I believe these are helpful
Last edited Mon Jan 9, 2012, 10:22 AM - Edit history (2)
This first shows the linkage between temperatures and greenhouse gases (note that the X-axis measures time before the present, moving right takes you further into the past):
http://www.victoria.ac.nz/antarctic/research/research-prog/anzice/default.aspx
[font size=3 face=Times,Times New Roman,Serif]A record of greenhouse gases [carbon dioxide, methane] for the past 400,000 years as preserved in the Vostok Ice Core from Antarctica. The record shows ice ages when average temperatures were 6 - 8°C cooler than now. Such periods were punctuated by warm phases such as Stage 5e (red arrow) when temperatures were around 2°C warmer than todays average. ANZICE will focus on those warm phases as case studies for what to expect in the future.[/font]
This next shows the linkage between glaciation and Milankovitch cycles (note that the X-axis measures time before the present, moving right takes you further into the past):
http://www.globalwarmingart.com/wiki/File:Milankovitch_Variations_png
The natural pattern appears to be relatively rapid warming (c. 10,000 years) initiated by Milankovitch cycles, and amplified by feedbacks (e.g. GHGs, albedo) followed by much slower cooling (c. 100,000 years) note, moving right takes you forward in time:
http://www.globalwarmingart.com/wiki/File:deglaciation_png
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The last time we were above 420ppm CO2 we were 20 degrees warmer worldwide
IbogaProject
Mar 2024
#83
You conferred with the originator. You know better than me what the threads about
Kolesar
Jan 2012
#12
At this point, it appears to be a pocket reference for scientific measurements of climate change
OKIsItJustMe
Jan 2012
#24
Yeah? So what? Show me PROOF that global warming is real, not just a bunch of charts.
Kablooie
Feb 2012
#54
can you point me to a site where they have the data for CO2 concentration & annual Global mean temps
Bill USA
Mar 2013
#65
Japanese satellite Arctic ice extent figures, since the American satellite has problems
muriel_volestrangler
May 2016
#74
"I think the Democratic Party has forsaken old environmental protections". Seriously????
marble falls
Mar 2020
#79