Tag Archives: Medieval Warm Period

The age old battle of the thermostat – the ‘Goredian’ Knot of global temperature

People send me stuff. Reader Kurt writes: I just found your excellent website and have book marked it and will visit it often for updates. One simple question the global warm-mongers have never been able to answer is… About these … Continue reading

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Posted in Global cooling, Global warming, Little Ice Age | Tagged , , , , , , | 202 Comments

More on Mark Hertsgaard’s ridiculous claims – The Goldilocks Crop and the Impending Extinction of Pasta

Guest Post by David Middleton Yesterday, WUWT covered the issue from one angle, and blew Hertsgaard’s riduculous claims out of the water. Today, here’s another independently arrived at conclusion that suggests Hertsgaard’s claims are pure fantasy. It is apparently becoming … Continue reading

Posted in Agriculture, Alarmism | Tagged , , , , , , | 78 Comments

The Atlantic Magazine’s ’5 Charts About Climate Change That Should Have You Very, Very Worried’… Worried about scientific illiteracy.

Guest post by David Middleton I ran into this gem on Real Clear Energy this morning… The article cites terrifying new reports commissioned by the World Bank and the CIA and then launches into a graphical cornucopia of nonsense. The … Continue reading

Posted in Alarmism, Carbon dioxide, Climate Craziness of the Week, Climate FAIL, Climate_change, Current News, Disaster, Drought, Environment, extreme weather, Fun_stuff, Greenland ice sheet, Humor, media, Paleoclimatology, Tabloid Climatology, Wildfires | Tagged , , , , , , | 88 Comments

Speak loudly and carry a busted hockey stick

by Walter Starck (in Quadrant Online) The average temperature for the Earth, or any region or even any specific place is very difficult to determine with any accuracy.  At any given time surface air temperatures around the world range over … Continue reading

Posted in Climate News | Tagged , , , , | 138 Comments

Mann’s hockey stick disappears – and CRU’s Briffa helps make the MWP live again by pointing out bias in the data

Shock, awe. Untruncated and unspliced data used in a new paper from Briffa and Melvin at UEA restores the Medieval Warm Period while at the same time disappears Mann’s hockey stick. Here’s figure 5 that tells the story: Look at … Continue reading

Posted in Climategate, Michael E. Mann, Paleoclimatology | Tagged , , , , , , , | 483 Comments

Yet another paper demonstrates warmer temperatures 1000 years ago and even 2000 years ago.

Yesterday I highlighted the paper The extra-tropical Northern Hemisphere temperature in the last two millennia: reconstructions of low-frequency variability, by B Christiansen of the Danish Meteorological Institute and F C Ljungqvist of Stockholm University which showed that using a multitude … Continue reading

Posted in Paleoclimatology | Tagged , , , , , | 182 Comments

New paper confirms the climate was warmer 1000 years ago

Mike Mann will have a twitfest on Twitter trying to knock this one down. Data from 91 Northern Hemisphere proxies was used to reconstruct temperature. See reconstruction graph (figure 5) below. Via The GWPF: A new paper, looking back at … Continue reading

Posted in Michael E. Mann, Paleoclimatology | Tagged , , , , , | 85 Comments

Want to make a paper more alarming and appealing to coverage? Blame the Romans for climate change

By comparing today’s Nature paper to earlier versions I found just a few months old, it looks like some blame revisionism occurred after early discussions of this paper at NOAA in May 2012. Over at Australian Climate Madness, Simon points … Continue reading

Posted in Alarmism, Methane, Paleoclimatology | Tagged , , , , | 99 Comments

Make your own Michael Mann hockey stick at home

Following yesterday’s first look at emails from the 2 year effort to get NOAA to release emails from FOIA requests, where we learn that some scientists felt ‘Hit on the head with a hockey stick’ and that “The paleodata always got … Continue reading

Posted in Climate data, Paleoclimatology | Tagged , , , , , | 64 Comments

Another paper refutes the Mann made hockey stick – MWP was ≈1°C warmer than current temperatures

This new paper uses a rather unique proxy; high-resolution samples micromilled from archaeological shells of the European limpet, Patella vulgata. Mr. Limpet would be proud. A paper published this week in the journal Palaeogeography, Palaeoclimatology, Palaeoecology finds that the Medieval … Continue reading

Posted in Paleoclimatology | Tagged , , , , , , , | 55 Comments

Linking the ENSO and PDO induced rainfall of the Pacific Northwest to proxy data in tree rings and lake sediments

From Penn State , another Mann paper with proxy sets, and a divergence problem. At least they are talking about the MWP, or as they call it, the Medieval Climate Anomaly which had been erased in previous papers Mann had … Continue reading

Posted in Climate data, Paleoclimatology, PDO | Tagged , , , , , , , , | 147 Comments

HH Lamb–“Climate: Present, Past & Future–Vol 2”–In Review–Part I

Guest post by Paul Homewood (reposted from his blog Not a lot of people know that please visit and  bookmark) Part 1 of a three part series. Hubert Lamb was one of the leading climatologists of his time, indeed described … Continue reading

Posted in Book Review | Tagged , , , , , , , , | 66 Comments

Mann’s ‘hockey stick’ claims of the MWP and LIA being local were refuted years before it was published

Pierre Gosselin at NoTricksZone reports: Geologist Dr. Sebastian Lüning and Prof. Fritz Vahrenholt found a Japanese tree-ring temperature reconstruction from 1995, one that should have been heeded by the IPCC and Michael Mann before they took the world on a 10-year joyride … Continue reading

Posted in IPCC, Michael E. Mann, Paleoclimatology | Tagged , , , , , , , , , , | 82 Comments

The longest, most high resolution, most inconvenient paleoclimate data that hasn’t been published

Read on for a new Josh cartoon. What’s wrong with this image? Well if you are part of The Team (RealClimate and friends), it goes against everything you’ve been publishing. You want the Medieval Warm Period to disappear, and you … Continue reading

Posted in Paleoclimatology | Tagged , , , , , , , , | 158 Comments

The sum of Yamal is greater than its parts

This post will be a sticky top post for a day or two, new stories will appear below this one. Climategate Continues By Andrew Montford & Harold Ambler May 24, 2012 4:00 A.M. in the National Review – reposted here … Continue reading

Posted in The Yamal Deception | Tagged , , , , , , | 223 Comments

Megafire study suggests today’s megafires, at least in the southwestern U.S., are atypical

From SMU (Southern Methodist University) comes this press release which really isn’t surprising. North America didn’t have a forest fire suppression program for the last 1400 years, so there wasn’t a fuel buildup issue like we have today, forest floors … Continue reading

Posted in Paleoclimatology, Wildfires | Tagged , , , , , , , | 73 Comments

More solar linkages to climate variations

From Pierre Gosselin’s No Tricks Zone: Oases of the Chinese Taklamakan Desert Greened Up In Sync With Solar Millenial Cycles by Sebastian Lüning and Fritz Vahrenholt The Taklamakan Desert is the 2nd world’s largest sand desert after the Rub el-Khali … Continue reading

Posted in Paleoclimatology, Solar | Tagged , , , | 40 Comments

Pat Michaels – on the death of credibility in the journal Nature

Atmospheric Aerosols and the Death of Nature Guest post by Dr. Patrick Michaels Big news last week was that new findings published in Nature magazine showed that human emissions of aerosols (primarily from fossil fuel use) have been largely responsible … Continue reading

Posted in Aerosols, AMO, Peer review | Tagged , , , , , , , | 171 Comments

Proof that “climate disruption” is found all the way back to pre-industrial times

A new paper in Quaternary Science Reviews titled: Combined dendro-documentary evidence of Central European hydroclimatic springtime extremes over the last millennium …demonstrates that there is evidence for extreme weather during both the Medieval Warming Period  and the Little Ice Age, … Continue reading

Posted in Paleoclimatology | Tagged , , , , , , , | 34 Comments

Yes, I know, I covered it first: The Medieval Warm Period was Global

I must have had 20 tips and notes/contacts over the past 24 hours like this one: New temperature proxy discovered An article (http://www.dailymail.co.uk/sciencetech/article-2120512/Global-warming-Earth-heated-medieval-times-human-CO2-emissions.html) in the Mail Online describes a paper (http://www.sciencedirect.com/science/article/pii/S0012821X12000659) detailing a new temperature proxy that indicates that the … Continue reading

Posted in Paleoclimatology | Tagged , , , , , , , | 81 Comments