Marcott's Climate Reconstruction For the past 11,000 Years  

Posted by Big Gav in

The Atlantic has a look at a new study of historical temperatures - We're Screwed: 11,000 Years' Worth of Climate Data Prove It

Back in 1999 Penn State climate scientist Michael Mann released the climate change movement's most potent symbol: The "hockey stick," a line graph of global temperature over the last 1,500 years that shows an unmistakable, massive uptick in the twentieth century when humans began to dump large amounts of greenhouse gases into the atmosphere. It's among the most compelling bits of proof out there that human beings are behind global warming, and as such has become a target on Mann's back for climate denialists looking to draw a bead on scientists.

Now it's gotten a makeover: A study published in Science reconstructs global temperatures further back than ever before -- a full 11,300 years. The new analysis finds that the only problem with Mann's hockey stick was that its handle was about 9,000 years too short.

2 comments

The following post, at Planet3 dot org, shows two graphs with the expected warming for this century tacked onto Marcott's temp reconstruction. One for climate sensitivity of 3 C warming/doubling CO2
The other for if the consensus is wrong and sensitivity is only 1.5 C for doubling CO2.

Both are stunning.

Why Climate Sensitivity is Not Policy-Relevant

http://planet3.org/2013/03/08/why-equilibrium-sensitivity-is-not-policy-relevant/

Not counting the 800,000 year antarctic ice core records of course ;-)

http://cdiac.ornl.gov/trends/co2/ice_core_co2.html

http://www.realclimate.org/index.php/archives/2005/11/650000-years-of-greenhouse-gas-concentrations/

On the site where I first saw this one idiot wanted to know why the data wasn't freely available - ignoring the fact that all the data is freely available in the supplement link below the link at Science. For a paper like this they should just open access the paper, not just the supplement.

http://www.sciencemag.org/content/339/6124/1198/suppl/DC1




Post a Comment

Ads

Ads

Statistics

Locations of visitors to this page

blogspot visitor
Stat Counter

Total Pageviews

Ads

Books

Followers

News

Loading...

Blog Archive

Labels

australia (582) global warming (365) solar power (338) peak oil (321) electric vehicles (193) renewable energy (182) wind power (172) ocean energy (156) csp (144) geothermal energy (142) smart grids (139) solar thermal power (133) tidal power (133) coal seam gas (127) nuclear power (122) oil (116) lng (112) geothermal power (111) solar pv (110) china (109) iraq (108) energy storage (105) green buildings (104) natural gas (102) agriculture (85) biofuel (76) oil price (76) smart meters (72) wave power (68) electricity grid (63) energy efficiency (63) uk (63) google (55) coal (53) internet (51) food prices (48) shale gas (48) surveillance (48) bicycle (47) big brother (47) thin film solar (41) canada (39) biomimicry (38) ocean power (37) scotland (36) new zealand (35) air transport (34) algae (34) water (34) queensland (32) credit crunch (31) politics (31) shale oil (31) bioplastic (30) concentrating solar power (30) california (29) geoengineering (28) offshore wind power (28) population (28) cogeneration (27) saudi arabia (27) resource wars (26) arctic ice (25) batteries (25) censorship (25) cleantech (25) woodside (25) bruce sterling (24) drought (24) tesla (24) ctl (23) economics (22) carbon tax (20) coal to liquids (20) distributed manufacturing (20) indonesia (20) iraq oil law (20) limits to growth (20) origin energy (20) brightsource (19) buckminster fuller (19) rail transport (19) ultracapacitor (19) santos (18) ausra (17) exxon (17) lithium (17) cellulosic ethanol (16) collapse (16) electric bikes (16) mapping (16) michael klare (16) ucg (16) atlantis (15) bees (15) geodynamics (15) iceland (15) psychology (15) concentrating solar thermal power (14) ethanol (14) fertiliser (14) al gore (13) ambient energy (13) biodiesel (13) brazil (13) carbon emissions (13) cities (13) investment (13) kenya (13) biochar (12) bucky fuller (12) matthew simmons (12) otec (12) public transport (12) texas (12) victoria (12) chile (11) cradle to cradle (11) desertec (11) energy policy (11) internet of things (11) lithium ion batteries (11) terra preta (11) amory lovins (10) fabber (10) gazprom (10) goldman sachs (10) gtl (10) hybrid car (10) severn estuary (10) tinfoil (10) toyota (10) volt (10) alaska (9) biomass (9) carbon trading (9) distributed generation (9) esolar (9) fuel cells (9) jeremy leggett (9) pge (9) sweden (9) afghanistan (8) antarctica (8) arrow energy (8) big oil (8) eroei (8) floating offshore wind power (8) four day week (8) guerilla gardening (8) linc energy (8) methane (8) methane hydrates (8) nanosolar (8) natural gas pipelines (8) pentland firth (8) relocalisation (8) us elections (8) western australia (8) bloom energy (7) boeing (7) chp (7) climategate (7) copenhagen (7) fish (7) stirling engine (7) vinod khosla (7) airborne wind turbines (6) apocaphilia (6) bolivia (6) ceramic fuel cells (6) cigs (6) futurism (6) jatropha (6) local currencies (6) nigeria (6) ocean acidification (6) saul griffith (6) scenario planning (6) somalia (6) t boone pickens (6) space based solar power (5) varanus island (5) garbage (4) kevin kelly (4) low temperature geothermal power (4) oled (4) tim flannery (4) v2g (4) club of rome (3) global energy grid (2) norman borlaug (2) peak oil portfolio (1)