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Sun Jan 8, 2012, 07:40 PM

The E/E pocket reference guide [View all]

Last edited Thu Apr 19, 2012, 08:53 PM - Edit history (19)

This discussion thread is pinned.
E/E invites discussion or any subject pertaining to the environment (biodiversity, pollution, GM crops, population et al); energy (fossil fuels, renewables, and the great nuclear pie-fight); and of course climate change/resource use which links the two. Peak oil related posts are also welcome, but don't forget the peak oil group.

If you've got questions about climate change feel free to ask, but if you repeatedly post denialist rubbish you are liable to be shown the door...

Jump to:
Greenhouse Gasses
Temperatures
Hydrology
Paleoclimate
Energy
Responses to denialist claptrap
Links

Last update Apr 20 2012.

GHGs


CO2 (Global):
Source: NOAA
Carbon dioxide is the GHG that gets discussed the most, because of the sheer amount we produce (9 billion tons in 2010) and because so much of our existing energy produces it. Note: NOAA have tweaked their website breaking the link, so I've switched to the global figures.



OECD/non OECD CO2 emissions by source - 1990 to 2035
Source: EIA
Many more at the link.


CH4 (Mauna Loa):
Source: NOAA
Methane is a much stronger GHG than CO2, but thankfully short-lived. The main anthropologic source is farming (ruminant burps and farts, decomposition in rice paddies) although an increasing amount is produced by melting clathrates due to climate change - a positive feedback.


N2O (Mauna Loa):
Source: NOAA
(The link also has info on Sulfur Hexaflouride, Carbon Monoxide & Hydrogen)
Stronger again than CO2 and longer lasting than methane, Nitrous Oxide is produced by the worst coal plants and fertilizer (now the main source).


Suess Effect: 13C
Source: Scripps (image in Graphics Gallery)
Wikipedia has a good primer on the Suess effect if needed.


Suess Effect: 14C
Source: Scripps (image in Graphics Gallery)


Suess Effect: 14C, historic:
Source: UCLA


Temperatures


GISS Temperature Anomolies:
Source: NASA
This tends to get updated around the middle of the month, when I remember to do it.


Ocean heat content:
Source: NOAA


The 'Hockey stick':
Source: The OSS Foundation
There are various versions of this chart: This is the from the last IPCC report, but there are more (with comparisons) at the link.


Realism vs Skepticism:
Source: Skeptical Science
Pwnd. Also check out Rasmus Benestad's trend-fudging masterclass at RealClimate.


Hydrology


US Drought:
Source: UNL


Arctic ice area:
Source: UIUC


Arctic ice mass (PIOMAS):
Source: WashingtonU


PIOMAS trends:
Source: Neven
Neven's Plot'o'Doom. Not guaranteed, but certainly food for thought.


Arctic ice map:
Source: UIUC


Antarctic ice map:
Source: UIUC


Paleoclimate


CO2 & Temp for 5 glaciations
Source: GWArt


Milankovitch cycles
Source: GWArt
NB: Recent is on the left.


CO2 & Temp for 4 glaciations
Source: VictoriaU
NB: Recent is on the left.


Energy


US Energy flowchart - 2010
Source: LLNL


Global energy production - 1985 to 2010
Source: Consumer Energy Report
NB: The figures are from BP, but I assume they're accurate.



Energy consumption by fuel - 1990 to 2035
Source: EIA
Many more at the link.


Responses to denialist claptrap

Claim: CO2 followed warming after the last ice age.

Details: Rather than an increase in CO2 causing increasing temperatures at the end of the last ice, the increase in CO2 was caused by increasing temperatures. Therefore, we don't need to worry about increasing CO2 now.
Response: A test of 80 temperature proxies referenced against CO2 levels (from air trapped in ice) shows that the the CO2 definitely came first. A fuller explanation can be found at http://www.livescience.com/19481-ice-age-carbon-dioxide-orbit.html, and the paper is at http://www.nature.com/nature/journal/v484/n7392/full/nature10915.html


(I'll add more of these next week )

Links

RealClimate: Climate Science from climate scientists.
Skeptical Science: Examines the science and arguments of global warming skepticism.
The Oil Drum: Discussions about Energy and Our Future
Nevan's ice blog.
GliderGuider's happy fun pages.


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