Paleo-climatology

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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Global Temps Plunged 1-2°C Within Decades 8.2 K and 4.2 K Years Ago - And It Could Happen Again

Global Temps Plunged 1-2°C Within Decades 8.2 K and 4.2 K Years Ago – And It Could Happen Again

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Share this…FacebookTwitterIn direct contrast with CO2-centric climate modeling, extensive paleoclimate evidence affirms that the Holocene climate has been far more variable in the past 12,000 years than during the relatively quiescent period we’ve enjoyed since the mid-19th century. In the absence of CO2 concentration changes or human interference, abrupt global cooling episodes led to agricultural […]

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New Science Affirms Arctic Region Was 6°C Warmer Than Now 9000 Years Ago, When CO2 Levels Were 'Safe'

New Science Affirms Arctic Region Was 6°C Warmer Than Now 9000 Years Ago, When CO2 Levels Were ‘Safe’

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Share this…FacebookTwitterUnearthed new evidence (Mangerud and Svendsen, 2018) reveals that during the Early Holocene, when CO2 concentrations hovered around 260 ppm, “warmth-demanding species” were living in locations 1,000 km farther north of where they exist today in Arctic Svalbard, indicating that summer temperatures must have been about “6°C warmer than at present”. Proxy evidence from […]

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What Scientific 'Consensus'? 254 New 2018 Papers Support A Skeptical Position On Climate Alarmism

What Scientific ‘Consensus’? 254 New 2018 Papers Support A Skeptical Position On Climate Alarmism

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Share this…FacebookTwitterIn just the first 6 months of 2018,  254 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. […]

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Inconvenient Climate History: South African Sea Levels 3 Meters Higher 5000 Years Ago

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Share this…FacebookTwitterSouth Africa Sea Level Was 3 Meters Higher 5000 Years Ago Than Today By Dr. Sebastian Lüning and Prof. Fritz Vahrenholt (German text translated/edited by P Gosselin) Today’s topic: Sea level rise around Africa. There the sea level is rising there like anywhere else. Already during the last warm phase, the Medieval Warm Period […]

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What Warming?  The First Blooming Date For Trees In Beijing Occurs No Earlier Today Than A.D. 1741-1795

What Warming? The First Blooming Date For Trees In Beijing Occurs No Earlier Today Than A.D. 1741-1795

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Share this…FacebookTwitterThe day of the year that a plant first blooms is widely considered to be “an important natural indicator of climate change” when observed over the course of decades to centuries.  A new study (Liu et al., 2018) reveals that a flowering plant in Beijing, the Amygdalus davidiana, has not been blooming any earlier in recent […]

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New Study: Denmark Sea Level Was 11-12.5 Meters Higher Than Now During The Mid-Holocene

New Study: Denmark Sea Level Was 11-12.5 Meters Higher Than Now During The Mid-Holocene

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Share this…FacebookTwitterIn a new paper, data from 57 sites along 17 km of coastal Denmark reveal that sea levels were 11 to 12.5 meters higher than they are today between 7,600 and 4,600 years ago. Image Source: Clemmensen et al., 2018 Most Holocene reconstructions do not indicate that sea levels were more than about 5 meters […]

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Swedish Researchers Confirm 20th Century Warming "Does Not Stand Out" Over Past 2500 Years!

Swedish Researchers Confirm 20th Century Warming “Does Not Stand Out” Over Past 2500 Years!

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Share this…FacebookTwitterA very recent study by Swedish scientists appearing in the journal Climate of the Past examining bottom water temperature (BWT) off the coast of Western Sweden (Gullmar Fjord) going back 2500 years found that “the most recent warming of the 20th century does not stand out.” Team of researchers led by Irina Polovodova Asteman, University of […]

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Scientists Find Sun-Driven Temperature Changes Led CO2 Changes By 1300-6500 Years In The Ancient Past

Scientists Find Sun-Driven Temperature Changes Led CO2 Changes By 1300-6500 Years In The Ancient Past

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Share this…FacebookTwitterIt has long been established in the scientific literature (and affirmed by the IPCC) that CO2 concentration changes followed Antarctic temperature changes by about 600 to 1000 years during glacial-interglacial transitions throughout the last ~800,000 years (Fischer et al., 1999; Monnin et al., 2001; Caillon et al., 2003; Stott et al., 2007; Kawamura et al., 2007). In contrast, two new […]

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New Scientific Evidence Robustly Affirms Scandinavian Temperatures Were 3-4°C Warmer 9000 Years Ago

New Scientific Evidence Robustly Affirms Scandinavian Temperatures Were 3-4°C Warmer 9000 Years Ago

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Share this…FacebookTwitterBecause trees may only grow within narrowly-defined temperature ranges and elevations above sea level, perhaps the most reliable means of assessing the air temperatures of past climates is to collect ancient treeline evidence.  In a new paper, Kullman (2018) found tree remnants at mountain sites 600 to 700 meters higher than where the modern […]

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3 New Papers: Permian Mass Extinction Coincided With Global Cooling, Falling Sea Levels, And Low CO2

3 New Papers: Permian Mass Extinction Coincided With Global Cooling, Falling Sea Levels, And Low CO2

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Share this…FacebookTwitterIn the past it has been widely reported that high and abruptly changing CO2 concentrations during the Permian led to climate conditions that were “too hot for complex life to survive” on the planet.  Today, scientists have determined that the opposite may be true: the Permian mass extinction event occurred during a period of […]

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81 Graphs From 62 New (2018) Papers Invalidate Claims Of Unprecedented Global-Scale Modern Warming

81 Graphs From 62 New (2018) Papers Invalidate Claims Of Unprecedented Global-Scale Modern Warming

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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 4 months into the new publication year and already 81 graphs from 62 scientific papers undermine claims that […]

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Activists Continue To Peddle Unsupportable Claims Of NEVER-BEFORE Climate Alarm, Ignoring New Science

Activists Continue To Peddle Unsupportable Claims Of NEVER-BEFORE Climate Alarm, Ignoring New Science

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Share this…FacebookTwitterThe peer-reviewed scientific literature is teeming with new evidence supporting the skeptical viewpoint that modern climate changes are neither unprecedented or unusual — nor do they fall outside the range of natural variability.  For example, (1) the Arctic’s Bering Sea surface was several degrees warmer and sea-ice-free all year round earlier in the Holocene. […]

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It's Here: A 1900-2010 Instrumental Global Temperature Record That Closely Aligns With Paleo-Proxy Data

It’s Here: A 1900-2010 Instrumental Global Temperature Record That Closely Aligns With Paleo-Proxy Data

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Share this…FacebookTwitterA global-scale instrumental temperature record that has not been contaminated by (a) artificial urban heat (asphalt, machines, industrial waste heat, etc.), (b) ocean-air affected biases (detailed herein), or (c) artificial adjustments to past data that uniformly serve to cool the past and warm the present . . . is now available. Composed of 450 instrumental […]

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Swiss Climate Institute Director: "Absurd" To Call CO2 "Pollutant...Main Culprit Behind Climate Change"

Swiss Climate Institute Director: “Absurd” To Call CO2 “Pollutant…Main Culprit Behind Climate Change”

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Share this…FacebookTwitterA new research institute in Switzerland set to rock the climate science boat…will investigate natural causes of climate change. Director calls claims CO2 the main driver and a pollutant “absurd”. Swiss institute director and climate scientist Hans-Joachim Dammschneider says natural factors in large part behind recent climate change. Photo credit: IFHGK The Swiss Basler Zeitung (BZ) […]

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70+ Papers: Holocene Sea Levels 2 Meters Higher - Today's Sea Level Change Indistinguishable From Noise

70+ Papers: Holocene Sea Levels 2 Meters Higher – Today’s Sea Level Change Indistinguishable From Noise

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Share this…FacebookTwitterNote: This post will remain an extra day… ======================================= More than 70 recent scientific publications show that there is absolutely nothing unusual about the magnitude and rapidity of today’s sea level changes. These academically peer-reviewed papers show that sea levels were on average 2 meters higher earlier in the Holocene than they are today. […]

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During The 800s-1300s AD, Wine Grapes Were Grown At Latitudes Where Polar Bears Now Roam

During The 800s-1300s AD, Wine Grapes Were Grown At Latitudes Where Polar Bears Now Roam

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Share this…FacebookTwitter1-2°C Warmer Medieval Times Supported Wine   Vineyards In Russia, Norway, N England (55°N)   Image Source: Wikipedia – public domain image Canada’s stable-to-increasing polar bear population extends its range slightly further south of the 55th parallel (York et al., 2016). Image Source: York et al., 2016 According to published geological evidence from the 1950s, […]

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