Paleo-climatology

New Study: A California Lake Had 4-5°C Warmer Periods While CO2 Was 200 ppm...During The Last GLACIAL

New Study: A California Lake Had 4-5°C Warmer Periods While CO2 Was 200 ppm…During The Last GLACIAL

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Share this…FacebookTwitterAnother new paper published in Earth and Planetary Science Letters casts further doubt on the paradigm that says CO2 has historically been a temperature driver. Evidence from southern California’s Lake Elsinore indicates today’s regional temperatures (18°C) are 4-5°C colder than a millennial-scale period between 29,000 to 26,000 years ago (29 to 26 ka), or […]

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CO2's Influence Was 0.006 W/m² Per Decade During The Last Deglaciation. And This Melted Ice Sheets How?

CO2’s Influence Was 0.006 W/m² Per Decade During The Last Deglaciation. And This Melted Ice Sheets How?

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Share this…FacebookTwitterAccording to the calculations of Dr. James Hansen, the radiative influence derived from the increase in CO2 during the last deglaciation was so negligible that it equated to “a third of energy required to power a honey bee in flight” (Ellis and Palmer, 2016). Image Source: Ellis and Palmer, 2016 Between about 22,000 and […]

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Scientists Document No Clear Warming Role For CO2 During The Last Deglaciation - Or The Last 10,000 Years

Scientists Document No Clear Warming Role For CO2 During The Last Deglaciation – Or The Last 10,000 Years

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Share this…FacebookTwitterA new paper indicates the rise in CO2 concentration occurred well after the Northern Hemisphere’s ocean circulation changes drove the abrupt warming (~11,700 years ago) that ended the last ice age – a lag that effectively leaves no causal role for CO2 during deglaciation. Image Source: Muschitiello et al., 2019 Ice core evidence from […]

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California Climate Has Always Been Wild And Unstable - Even With Low Atmospheric CO2 - New Study Shows!

California Climate Has Always Been Wild And Unstable – Even With Low Atmospheric CO2 – New Study Shows!

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Share this…FacebookTwitterA new study has just come out in the journal Earth and Planetary Science Letters: Biomarkers reveal abrupt switches in hydroclimate during the last glacial in southern California. Hat-tip: reader Mary Brown It contradicts claims often made by global warming alarmists that the perceived California climate change is unusual, and that it is mostly […]

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Busted Hockey Sticks: 35 Non-Global Warming Papers Have Been Published In 2019

Busted Hockey Sticks: 35 Non-Global Warming Papers Have Been Published In 2019

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Share this…FacebookTwitterCould a transition in paleoclimate reconstruction be underway? More and more, scientists aren’t hiding statements or graphical depictions of the lack of modern warming or the much-warmer Holocene past. A compilation of 35 papers from across the globe indicate that modern climate is not unusual, remarkable or unprecedented, and that large regions of the […]

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New Paper: Widespread Collapse Of Ice Sheets ~5000 Years Ago Added 3-4 Meters To Rising Seas

New Paper: Widespread Collapse Of Ice Sheets ~5000 Years Ago Added 3-4 Meters To Rising Seas

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Share this…FacebookTwitterDuring the Mid-Holocene, when CO2 concentrations were stable and low (270 ppm), Antarctica’s massive Ross Ice Shelf naturally collapsed, adding the meltwater equivalent of 3-4 meters to sea levels. Because CO2 concentrations changed very modestly during the pre-industrial Holocene (approximately ~25 ppm in 10,000 years), climate models that are predicated on the assumption that […]

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Scientists Present New Artifact Evidence From An Arctic Island That Was 5-6°C Warmer 9000 Years Ago

Scientists Present New Artifact Evidence From An Arctic Island That Was 5-6°C Warmer 9000 Years Ago

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Share this…FacebookTwitterZhokhov Island in the Siberian High Arctic today exhibits inhospitably severe climate conditions, desolate tundra, and year-round pack ice in the surrounding sea. During the Early Holocene this same island was warm enough to host waterfowl species, birch trees, and year-round human residents who hunted polar bear and reindeer. Image Source: Makeyev et al., […]

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There Has Been Just 0.1°C Of Unremarkable 'Global Warming' In The Last 50 Years

There Has Been Just 0.1°C Of Unremarkable ‘Global Warming’ In The Last 50 Years

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Share this…FacebookTwitter I.  According to the IPCC, the true manifestation of “global warming” can almost exclusively (93%) be found in the oceans.  The surface air or atmospheric heat changes amount to just 1% of the “global warming” representation. Image Source: IPCC (2013) II.  In the first 2000 meters of the global ocean, there has only […]

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Leading German Geologist Calls Notion Of "Climate Tipping Points" Scientific Hype By Opportunistic Scientists

Leading German Geologist Calls Notion Of “Climate Tipping Points” Scientific Hype By Opportunistic Scientists

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Share this…FacebookTwitterThe European Institute for Climate and Energy (EIKE) posted a video of prominent German geologist Dr. Stefan Kröpelin, who in a presentation late last year in Munich called the notion of CO2-induced climate tipping points scientifically outlandish. He also called the prospect of the Sahara spreading into Europe preposterous. EIKE recently wrote an article […]

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Consensus? 500+ Scientific Papers Published In 2018 Support A Skeptical Position On Climate Alarm

Consensus? 500+ Scientific Papers Published In 2018 Support A Skeptical Position On Climate Alarm

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Share this…FacebookTwitterIn 2018,  over 500 scientific papers were published that cast doubt on the position that anthropogenic CO2 emissions function as the climate’s fundamental control knob…or that otherwise serve to question the efficacy of climate models or the related “consensus” positions commonly endorsed by policymakers and mainstream media sources. More than 500 scientific papers published […]

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The Discovery Of Tree Trunks Under Glaciers 600 Meters Atop Today's Treeline Date To The Last ICE AGE

The Discovery Of Tree Trunks Under Glaciers 600 Meters Atop Today’s Treeline Date To The Last ICE AGE

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Share this…FacebookTwitterTree Trunk Conundrum Image Source: Ganyushkin et al., 2018 Between 60 and 40 thousand years ago, during the middle of the last glacial, atmospheric CO2 levels hovered around 200 ppm – half of today’s concentration. Tree remains dated to this period have been discovered 600-700 meters atop the modern treeline in the Russian Altai […]

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A Fabricated 'Uptick'? Marcott's 2013 Hockey Stick Graph Debunked By Marcott's Own 2011 Ph.D Thesis

A Fabricated ‘Uptick’? Marcott’s 2013 Hockey Stick Graph Debunked By Marcott’s Own 2011 Ph.D Thesis

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Share this…FacebookTwitterUnmasking Marcott’s “Uptick” 20th century “uptick” from Marcott et al., 2013, RealClimate.org   Almost immediately after it was introduced to the public, the lead author of Marcott et al. (2013) squelched the narrative that said the hockey-stick-shaped reconstruction he and his colleagues produced is a robust representation of modern global-scale temperature changes. In an interview with Marcott […]

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New Treeline, Permafrost Evidence Strongly Affirms The Mid-Holocene Was 3°C Warmer Than Today

New Treeline, Permafrost Evidence Strongly Affirms The Mid-Holocene Was 3°C Warmer Than Today

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Share this…FacebookTwitterNewly published macrofossil discoveries from 4 papers strongly suggest that modern warmth may still be about 3°C colder than nearly all of the last 10,000 years. Image Source: Leunda et al. (2018) 1. Permafrost is still present today in a region that was permafrost-free throughout the Holocene (until the onset of the Little Ice Age) […]

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2 More New Climate Reconstructions Indicate Rapid COOLING In The Last 100+ Years

2 More New Climate Reconstructions Indicate Rapid COOLING In The Last 100+ Years

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Share this…FacebookTwitterThe evidence that “global” warming has not been global in scale continues to accumulate.  Two more new reconstructions from the Western Pacific (He et al., 2018) and subpolar North Atlantic (Orme et al., 2018)  indicate that modern temperatures have continued to decline since the onset of the Little Ice Age.  These add to the […]

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New Study: Medieval Warm Period Not Limited To North Atlantic, But Occurred In South America As Well

New Study: Medieval Warm Period Not Limited To North Atlantic, But Occurred In South America As Well

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Share this…FacebookTwitterGlobal warming alarmist scientists like claiming that the well documented Medieval Warm Period (MWP) was merely a regional phenomenon, and not global. However a new publication by Lüning et al adds yet another study that shows the warm period from 1000 years ago was indeed global. ================================ Image source: here. Preindustrial climate change in […]

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Missed A Few, IPCC? 368 New 2018 Papers Support A Skeptical Position On Climate Alarmism

Missed A Few, IPCC? 368 New 2018 Papers Support A Skeptical Position On Climate Alarmism

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Share this…FacebookTwitterIn the first 9½ months of 2018,  368 scientific papers have been published that cast doubt on the position that anthropogenic CO2 emissions function as the climate’s fundamental control knob…or that otherwise serve to question the efficacy of climate models or the related “consensus” positions commonly endorsed by policymakers and mainstream media sources. These […]

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Scotland 800-Year Reconstruction Shows Temperatures Were As Warm Or Warmer In The Past!

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Share this…FacebookTwitterScotland climate over past 800 years: Pre-industrial warm phases provide answers By Dr. Sebastian Lüning and Prof. Fritz Vahrenholt (German text translated/edited by P Gosselin) How do today’s temperatures fit into the climate-historical context? This is one of the main tasks of today’s climate research. A group of researchers led by Milos Rydval have […]

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10 New Reconstructions Show Today's Temperatures Still Among The Coldest Of The Last 10,000 Years

10 New Reconstructions Show Today’s Temperatures Still Among The Coldest Of The Last 10,000 Years

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Share this…FacebookTwitterEven though CO2 concentrations hovered well below 300 ppm throughout most of the Holocene, newly published paleoclimate reconstructions affirm that today’s surface temperatures are only slightly warmer (if at all) than the coldest periods of the last 10,000 years.  This contradicts the perspective that temperatures rise in concert with CO2 concentrations.  Bottom Graph Source: Rosenthal et […]

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New Arctic Study Finds Spring Sea Ice Melted 2 Months Earlier Than Today During Roman, Medieval Times

New Arctic Study Finds Spring Sea Ice Melted 2 Months Earlier Than Today During Roman, Medieval Times

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Share this…FacebookTwitterScientists have determined that today’s Arctic sea ice concentrations are still much higher than they have been for most of the last several thousand years, undermining claims that modern era Arctic sea ice changes are remarkable, unusual, or unprecedented.  Source: Kolling et al., 2018 In the graphical illustration of Late Holocene West Greenland sea ice […]

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108 Graphs From 89 New Papers Invalidate Claims Of Unprecedented Global-Scale Modern Warmth

108 Graphs From 89 New Papers Invalidate Claims Of Unprecedented Global-Scale Modern Warmth

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Share this…FacebookTwitterDuring 2017, there were 150 graphs from 122 scientific papers published in peer-reviewed journals indicating modern temperatures are not unprecedented, unusual, or hockey-stick-shaped — nor do they fall outside the range of natural variability.  We are a little over halfway through 2018 and already  108 graphs from 89 scientific papers undermine claims that modern era warming is […]

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