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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 |
By Kenneth Richard on 18. May 2020
Share this…FacebookTwitterScientists suggest relative sea level changes are well-correlated with natural variability and accelerated sea level rise is a “recurring feature” of what has been observed for over 300 years. Five of six studied regions along the North American Atlantic coast show declining sea level rates (mm/yr) in recent decades. After retreating into the sea […]
Posted in Natural Variability, Sea Levels |
By Kenneth Richard on 14. May 2020
Share this…FacebookTwitterBoth during the last interglacial (~120,000 years ago) and from roughly 2000 to 7000 years ago, relative sea levels were from 6-10 meters to 1-3 meters higher than they are today, respectively. For a list of over 100 other scientific papers indicating sea levels across the world were multiple meters higher when Earth’s CO2 […]
Posted in Paleo-climatology, Sea Levels |
By Kenneth Richard on 11. May 2020
Share this…FacebookTwitterAn observational analysis of photometric evidence suggests solar forcing of Earth’s atmosphere could vary by as much as ±4.5 W/m² since 1750, which is “far larger than the IPCC estimate of −0.30 to +0.10 W/m²” (Judge et al., 2020). A 2017 study suggested the solar activity during the “modern maximum period from 1940 to […]
Posted in CO2 and GHG, Solar Sciences |
By Kenneth Richard on 7. May 2020
Share this…FacebookTwitterAt the end of the last glacial, when CO2 concentrations hovered around 250 ppm, there were abrupt warming and cooling events in the Spanish mountains (Béjar range) with magnitudes of 3°C within decades. Peak temperatures were at times warmer than today. It has often been claimed that abrupt warming and cooling events with amplitudes […]
Posted in Cooling/Temperature, Paleo-climatology |
By Kenneth Richard on 4. May 2020
Share this…FacebookTwitterReforestation removes CO2 from the atmosphere. Reforestation substantially cools the Earth’s land surfaces. Therefore, reforestation offers a “meaningful opportunity for local climate mitigation and adaptation”. So why are we focused on CO2 mitigation via reduction in fossil fuel use? Cooling the surface via reforestation A few months ago NoTricksZone featured a new study that […]
Posted in Cooling/Temperature |
By Kenneth Richard on 30. April 2020
Share this…FacebookTwitterGlacier surges of 100s of meters within mere months have been occurring throughout High Mountain Asia (the Karakoram region, especially) for decades, even centuries. It’s the Karakoram “anomaly”, and it’s thought to be “natural”. So why are the regions where glaciers are retreating thought to be responding to unnatural climate changes? The advancing glaciers […]
Posted in Glaciers, Natural Variability |
By Kenneth Richard on 27. April 2020
Share this…FacebookTwitterNew paleoclimate records from Europe, Scandinavia-Russia, China, and the northeastern USA indicate there has been no unusual modern warming. Instead, these newly published reconstructions show warmer periods and more rapid centennial-scale warming events occurred in past centuries, or when CO2 concentrations were much lower than they are now. United States In the late 1990s […]
Posted in Hockey Team, Medieval Warm Period, Paleo-climatology |
By Kenneth Richard on 20. April 2020
Share this…FacebookTwitterScientists now acknowledge cloud cover changes “control the Earth’s hydrological cycle”, “regulate the Earth’s climate”, and “dominate the melt signal” for the Greenland ice sheet via modulation of absorbed shortwave radiation. CO2 goes unmentioned as a contributing factor. Image Source: Hahn et al., 2020 Climate modeling of factors influencing Greenland warming, surface melt have […]
Posted in Arctic, Cloud Climate Influence, Models |
By Kenneth Richard on 16. April 2020
Share this…FacebookTwitter The radiative impact of CO2 on the ocean’s thermal skin layer cannot penetrate deeper than 0.01 mm. This effectively eliminates the potential for CO2 to be a driver of global warming. According to mainstream anthropogenic global warming (AGW) science, 93% of global warming is manifested in the 0-2000 m oceans. Just 1% of global […]
Posted in Climate Sensitivity, CO2 and GHG, IPCC, Oceans |
By Kenneth Richard on 13. April 2020
Share this…FacebookTwitterTwo new papers use tree ring proxy evidence to suggest modern European temperatures are neither unusual nor higher than they were during the Medieval Warm Period. Image Source: Esper et al. (2020) Esper et al. (2020) have produced a new temperature reconstruction for Southern Europe to complement past reconstructions for Northern and Central Europe. […]
Posted in Hockey Team, Medieval Warm Period, Paleo-climatology |
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