By Kenneth Richard on 24. January 2022
Humans have been recording flowering/bloom dates in China for over 1,000 years. These records affirm modern warmth in China is neither unprecedented nor unusual. Per temperature reconstructions gleaned from phenological records in poems, Central China had multiple 1-2°C warmer decades than 1961-1990 during the 1st millennium (Liu et al., 2021). Image Source: Liu et al., […]
Posted in Cooling/Temperature, Medieval Warm Period, Paleo-climatology |
By Kenneth Richard on 14. October 2021
From Russia to the Indian Ocean to Antarctica, surface temperatures were much warmer than they are today during Medieval times. 1. The Eastern Russia region was 1.5°C warmer than now during the Medieval Warm Period. The modern warm-up began centuries ago and temperatures have declined in the last few centuries. Relative sea levels were 1 […]
Posted in Medieval Warm Period, Paleo-climatology |
By Kenneth Richard on 16. August 2021
The IPCC’s latest report uses a hockey stick-shaped reconstruction of global temperatures that wholly contradicts previous records produced by the same PAGES 2k and Oceans 2k consortiums from 4 years earlier. In 2015, the PAGES 2k Consortium published an updated (“corrected”) 0-2000 AD global reconstruction that showed a large portion of the 1st millennium was […]
Posted in Little Ice Age, Medieval Warm Period, Paleo-climatology |
By Kenneth Richard on 8. July 2021
There has been no net warming in the Rocky Mountains in the last 500 years. The southern Rocky Mountains were as warm or warmer than recent decades during the 1600s and 1700s and they have been cooling since the 1950s (Berkelhammer and Stott, 2012, Heeter et al., 2020). Image Source: Berkelhammer and Stott, 2012 Image […]
Posted in Cooling/Temperature, Medieval Warm Period, Paleo-climatology |
By Kenneth Richard on 5. July 2021
China’s climate history includes multiple climate warming and cooling fluctuations of 4°C within centuries, with cold periods aligning with declines in solar irradiance. According to a new study (Zhang et al., 2021), northern China’s coldest temperatures of the last 5000 years occurred 300 calibrated years before present (cal yr BP), coinciding with the Little Ice […]
Posted in Little Ice Age, Medieval Warm Period, Paleo-climatology, Solar Sciences |
By Kenneth Richard on 3. May 2021
A new study (Kullman, 2021) suggests ~9000-year-old tree remains can be found buried in “currently empty snow hollows and glacier cirques” at elevations 600-700 m higher than where trees can grow today, implying a >3°C warmer Early Holocene climate. Treelines were still 75-100 m higher during the Medieval Warm Period…and even during the 15th and […]
Posted in Arctic, Medieval Warm Period, Paleo-climatology |
By P Gosselin on 31. January 2021
Despite the thousands of scientific publications refuting alarmist climate change scenarios, governments, activists and the IPCC continue to insist that we’re headed for climate catastrophe when we clearly are not. Thanks to Kenneth Richard’s Herculean efforts and the Google Medieval Warm Period Map, we have these publications readily available. There are reasons why in 2019 […]
Posted in Medieval Warm Period, Scepticism |
By Kenneth Richard on 29. January 2021
In 2020, more than 400 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. Over 400 scientific papers published in […]
Posted in Alarmism, Antarctic, Arctic, Climate Sensitivity, Cloud Climate Influence, CO2 and GHG, CO2 Greens the Earth, Cooling/Temperature, Coral Reefs, Glaciers, Hockey Team, Medieval Warm Period, Natural Oceanic Oscillations, Natural Variability, Ocean Acidification, Oceans, Paleo-climatology, Sea Ice, Sea Levels, Solar Sciences, Wind Power |
By Kenneth Richard on 14. January 2021
Scientists continued defying the “unprecedented” global warming narrative by publishing nearly 150 papers in 2020 that show large regions of the Earth (a) haven’t warmed in recent decades, (b) were as-warm or warmer within the last several centuries, and/or (c) were 1-7°C warmer than today just a few millennia ago. Here is the link to […]
Posted in Cooling/Temperature, Medieval Warm Period, Paleo-climatology |
By Kenneth Richard on 5. November 2020
The forcing uncertainties and lack of observational measurements in the top-to-bottom global ocean preclude an assessment that modern warmth is due to anthropogenic activities. Key points from a new paper (Gebbie, 2021): • 93% of the changes to the Earth’s energy budget, manifested as warming of the Earth system, are expressed in the global ocean. […]
Posted in Medieval Warm Period, Natural Variability, Oceans, Paleo-climatology, Tectonics/Volcanoes |
By Kenneth Richard on 15. October 2020
As recently as 2000 to 1000 years ago, spanning the Roman to Medieval Warm Periods, East Antarctica was 5-6°C warmer than it is today. The consequent ice melt resulted in >60 meters higher water levels in East Antarctica’s lakes. East Antarctica has been rapidly cooling in recent decades, with magnitudes reaching -0.7°C to -2.0°C per […]
Posted in Antarctic, Medieval Warm Period, Paleo-climatology |
By Kenneth Richard on 12. October 2020
It didn’t receive much a attention in 2015, but a comprehensive Nature journal study of 0-2000 A.D. global sea surface temperatures shows 1) climate changes occurred more than twice as fast during the Little Ice Age (LIA) than since 1800, 2) the entire first millennium was >1 standard deviation (s.d. unit) warmer than today, and […]
Posted in Little Ice Age, Medieval Warm Period, Oceans, Paleo-climatology |
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