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By P Gosselin on 29. July 2020
Share this…FacebookTwitterGerman climatologist Professor Dr. Horst-Joachim Lüdecke recently took data from two independent studies and superimposed them. The result shows the long claimed atmospheric CO2-global temperature correlation doesn’t exist. The first data set was global temperature anomaly going back 600 million years, taken from the results of a paper by Came and Veizer, appearing in […]
Posted in CO2 and GHG, Paleo-climatology |
By Kenneth Richard on 27. July 2020
Share this…FacebookTwitterUsing biomarker evidence (for example, the Early Holocene presence of sea creatures unable to survive below fixed warmth thresholds) and glacier melt extent measurements (for example, sea shells buried 6 km inside a glacier), scientists have been colloborating on a growing consensus that much of Arctic Svalbard was about 7°C warmer than today during […]
Posted in Arctic, Glaciers, Paleo-climatology |
By Kenneth Richard on 23. July 2020
Share this…FacebookTwitterIt is claimed Earth’s surface has warmed by 1°C in the last 140 years – which is a supposedly rapid climate change. But a new study suggests the Northern Hemisphere surface naturally cooled by 1°C in 8 or 9 years, then warmed up again by 1°C within decades during the Late Antique Little Ice […]
Posted in Cooling/Temperature, Natural Variability, Paleo-climatology |
By Kenneth Richard on 16. July 2020
Share this…FacebookTwitterFrom about 80,000 to 20,000 years ago, Greenland temperatures abruptly warmed by about 10°C in just a few decades on at least 20 occasions. And then, about 870 to 1,500 years later, CO2 rose. Li and Born (2019) document 8-16°C climate warmings (Dansgaard-Oeschger events) in Greenland that extended to both hemispheres between about 80 […]
Posted in CO2 and GHG, Paleo-climatology |
By Kenneth Richard on 6. July 2020
Share this…FacebookTwitterExtensive hake (fish) skeletal remains in ocean waters too cold for this species to occupy today suggest past ocean temperatures were several degrees warmer. Fish habitats are limited by specific temperature boundaries. In a new study, for example, Wheeland and Morgan (2020) found there was a pronounced ocean warming from the 1980s to late […]
Posted in Oceans, Paleo-climatology |
By Kenneth Richard on 2. July 2020
Share this…FacebookTwitterA new 1876-present temperature reconstruction for Northern Finland shows the 1930s were the warmest period of the last 140 years. And there has been no net warming since. Tree density analysis, MXD, has a “more prominent association with temperature” than measuring tree ring widths because it can more clearly separate precipitation factors affecting tree […]
Posted in Paleo-climatology |
By Kenneth Richard on 22. June 2020
Share this…FacebookTwitterThere is no apparent connection between Greenland’s ice melt and atmospheric CO2 concentrations. The ice that blankets Greenland today stands over 3 kilometers high. This ice volume can almost completely vanish – with just a tiny ice cap in the eastern highlands remaining – when CO2 concentrations only reach pre-1750 levels, or 260 to […]
Posted in Arctic, Glaciers, Paleo-climatology |
By P Gosselin on 21. June 2020
Share this…FacebookTwitterFrom the Atlantic to the Alps: westerly winds have determined the climate in Central Europe for 14.5 million years (Translated/edited from the German by P. Gosselin) Sabine Wendler of the Senckenberg Biodiversity and Climate Research Centre Press Office Senckenberg Research Institute and Nature Museums Senckenberg scientists in Germany have just studied the climate optimum […]
Posted in Paleo-climatology |
By Kenneth Richard on 18. June 2020
Share this…FacebookTwitterCoastal history analyses increasingly suggest sea levels are lower today than at any time in the last 7000 years – even lower than the 1600s to 1800s. Recently we compared cartology from the 17th to 19th centuries to direct aerial images of coastal positions today. Rather surprisingly, there seemed to be more land area […]
Posted in Little Ice Age, Paleo-climatology, Sea Levels |
By Kenneth Richard on 28. May 2020
Share this…FacebookTwitterToday, the region north of Svalbard is encrusted with sea ice for all but a few weeks per year and summer sea surface temperatures (SSTs) hover near 0°C. Scientists (Brice et al., 2020) have determined this same region had sea ice-free conditions last about 10 months per year while SSTs reached 4°C just ~4100 […]
Posted in Arctic, Paleo-climatology, Sea Ice |
By Kenneth Richard on 25. May 2020
Share this…FacebookTwitterIn a new climate reconstruction for the Tibetan Plateau (Liang et al., 2020), scientists report a) the highest Holocene temperatures occurred about 8,500 to 6,000 years ago; b) “century-scale climate fluctuations” correlate “statistically and visually” with solar forcing estimates; and c) “we are in the middle of the 500-yr-long relatively warm period” and “this […]
Posted in Natural Variability, Paleo-climatology, Solar Sciences |
By Kenneth Richard on 21. May 2020
Share this…FacebookTwitterDuring the Early Holocene, when CO2 levels lingered near 260 ppm, ice core records suggest surface temperatures in Iceland were about 3°C warmer than today. Iceland’s extensive lakes and glaciers topography provides a verifiable history of the region’s paleoclimates. For example, scientists can infer summer temperatures 3°C warmer than today in Iceland to account […]
Posted in Arctic, Paleo-climatology, Sea Ice |
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