Vostok last 12000 years
https://www.google.com/imgres?imgur...I3PAhVFTSYKHZMCCNkQMwgkKAYwBg&iact=mrc&uact=8
https://www.google.com/imgres?imgur...I3PAhVFTSYKHZMCCNkQMwgkKAYwBg&iact=mrc&uact=8
Climate and Weather
- Thread starter espola
- Start date
Here's some real perspective.
http://www.geocraft.com/WVFossils/Carboniferous_climate.html
http://www.geocraft.com/WVFossils/Carboniferous_climate.html
That is one theory.
We dont need Vostok ice core temp data for the last 100 years. We have records for that.
The last 40 years we actually have satellite data.
Wez
DA
So your scientific opinion is that the graphs you posted prove the graph I posted is wrong? If I can link you peer reviewed data that proves it right, would you change your opinion?
I have more questions, but let's get those answered first. You are looking for data that proves Global temperature averages have fluctuated by much larger degrees then what is presented in the graphic I posted, I intend to change that narrative.
Mann's "hockey stick" was "peer reviewed".
The actual data is something else.
Your homogenized cartoon smoothed all the spikes and valleys and turned them into barely discernable gradients.
To run in 500 year blocks, and then throw in a 16 year slice at the end is hilarious.
I would also contend, as would others, that the medieval warm period was warmer than today.
Wez
DA
I'm not sure 30-40 year old satellite data is relied upon by most scientists. Just making the point that our Earth Science technology has gotten a ton better in the last 20 years... not that it changes the discussion much.
Wez
DA
- PALEOCLIMATOLOGICAL EVIDENCE FOR UNPRECEDENTED RECENT TEMPERATURE RISE AT THE EXTRATROPICAL PART OF THE NORTHERN HEMISPHERE
- Rates of change in natural and anthropogenic radiative forcing over the past 20,000 years
- Twentieth century warming in deep waters of the Gulf of St. Lawrence: A unique feature of the last millennium
- Ammonium concentration in ice cores: A new proxy for regional temperature reconstruction?
- High-resolution palaeoclimatology of the last millennium: a review of current status and future prospects (Jones 2009)
- A late Quaternary climate reconstruction based on borehole heat flux data, borehole temperature data, and the instrumental record (Huang et al. 2008)
- Proxy-based reconstructions of hemispheric and global surface temperature variations over the past two millennia (Mann et al.2008)
- Robustness of proxy-based climate field reconstruction methods (Mann 2007)
- Millennial temperature reconstruction intercomparison and evaluation (Juckes et al. 2007)
- Global Warming 2007. An Update to Global Warming: The Balance of Evidence and Its Policy Implications (Keller, 2007)
- Proxy-Based Northern Hemisphere Surface Temperature Reconstructions: Sensitivity to Method, Predictor Network, Target Season, and Target Domain (Rutherford et al. 2005)
- Extracting a Climate Signal from 169 Glacier Records (Oerlemans, 2005)
- Highly variable Northern Hemisphere temperatures reconstructed from low- and high-resolution proxy data (Moberg et al. 2005)
- Climate over past millennia (Jones & Mann, 2004)
- Global surface temperatures over the past two millennia (Mann & Jones, 2003)
- Optimal surface temperature reconstructions using terrestrial borehole data (Mann et al. 2003)
- On Past Temperatures and Anomalous Late-20th Century Warmth (Mann 2003)
- Mid?latitude (30°–60° N) climatic warming inferred by combining borehole temperatures with surface air temperatures (Harris & Chapman, 2001)
- Low-frequency temperature variations from a northern tree ring density network (Briffa et al. 2001)
- Climate Reconstruction from Subsurface Temperatures (Pollack & Huang, 2000)
- Annual climate variability in the Holocene: interpreting the message of ancient trees (Briffa, 2000)
- Northern hemisphere temperatures during the past millennium: Inferences, uncertainties, and limitations (Mann 1999)
- Climate Change Record in Subsurface Temperatures: A Global Perspective (Huang et al. 1998)
- High-resolution palaeoclimatic records for the last millennium: interpretation, integration and comparison with General Circulation Model control-run temperatures (Jones et al. 1998)
- Global-scale temperature patterns and climate forcing over the past six centuries (Mann et al. 1998)
- 'Little Ice Age' summer temperature variations: their nature and relevance to recent global warming trends (Bradley & Jones, 1993)
- Changing Climate: Geothermal Evidence from Permafrost in the Alaskan Arctic (Lachenbruch & Marshall, 1986)
Look at the beautiful, untampered, graph on post #390.
Pure data.
Can you believe how perfect it is?
Can you visualize the sea serpent?
Pure data.
Can you believe how perfect it is?
Can you visualize the sea serpent?
Wez
DA
Nothing is not the right word to use. Can we say for sure what the overall impact is, no. I've said from the very beginning, a rational discussion on the topic of AGW should not involve any absolutes. Good Science evolves and changes as new information comes to light.
The important thing is to discuss what is reasonable based on what we currently know.
If we have to argue about what we currently know, for political and profiteering reasons, then we can't have a discussion and that's what's going on here.
Wez
DA
No, see above. That was a specific response to your specific point about the "hockey stick" being peer reviewed.