By Kenneth Richard on 9. December 2024
Paleoclimate evidence affirms warmth reduces drought frequency and intensity. A new study utilizes Asian tree pollen records to affirm that for the last 8000 years centennial-scale warming periods were associated with reductions in drought, famines, crop failures. “…warm periods were associated with increased precipitation along with relatively short-lived drought events.” In contrast, centuries of cooling […]
Posted in Cooling/Temperature, Drought and Deserts, Paleo-climatology, Warming/CO2 Benefiting Earth |
By Kenneth Richard on 2. December 2024
More evidence has emerged suggesting there is more sea ice in the Arctic today than nearly any time in the last 8000 years. According to a new study, biomarker evidence suggests the Barents Sea (Arctic) was seasonally “ice free” from ~8000 to ~2100 years ago, or back when the CO2 concentration was said to be […]
Posted in Arctic, Paleo-climatology, Sea Ice |
By Kenneth Richard on 31. October 2024
Three new studies use evidence from elevated beach ridges to assess sea levels were 3-5 m higher than today near Thailand, 1-1.5 m higher near Australia, 2-5 m higher along the North Sea just a few millennia ago. The higher sea levels in the tropical regions (Australia, Gulf of Thailand) were “primarily driven by eustatic […]
Posted in Paleo-climatology, Sea Levels |
By Kenneth Richard on 22. October 2024
Yet another region of the world has not been cooperating with the “global” warming narrative. A new study‘s reconstructed temperatures show no net warming in Central China over the last 250 years. The authors point out the observed temperatures from 1953-2020 closely align (r = 0.732) with the reconstructed 1953-2020 temperatures. This suggests the reconstructed […]
Posted in Cooling/Temperature, Paleo-climatology |
By Kenneth Richard on 17. October 2024
Relative sea levels are lower today than at any time in the last 7000 years. According to 80-year-old aerial photograph evidence, scientists (Nakanishi et al., 2024) report the coastline of their studied area (Hokkaido, Japan) has “receded by approximately 100 m seaward” since 1944. This is a continuation of the long-term, millennial-scale decline in relative […]
Posted in Paleo-climatology, Sea Levels |
By Kenneth Richard on 14. October 2024
A new study provides still more evidence the Arctic was warmer than it is today as recently as a few thousand years ago. In 2020 the well-preserved carcass of a Yakutian brown bear (Ursus arctos) was discovered buried in permafrost on the terrain of the treeless tundra Bolshoy Lyakhovsky Island in the Arctic Ocean, 73°N. […]
Posted in Arctic, Paleo-climatology, Russian Climate Science |
By P Gosselin on 4. October 2024
Norwegian climate blog site avdekt.no here reports how the GISP2 ice core data from Greenland shows the current temperature is well below the Holocene average. Moreover, these temperatures also match perfectly with the historical sources in Norway and Europe, according to avedkt.no. The chart below shows a temperature reconstruction based on ice cores going back […]
Posted in Paleo-climatology |
By Kenneth Richard on 5. September 2024
“…sea surface temperature has been the primary determinant of baseline atmospheric P(CO2) across the entire Cenozoic” – Frank, 2024 A new study analyzes paleo atmospheric CO2 levels using the modern-day observation that oceans release more CO2 as they warm and less CO2 as they cool – a reference to Henry’s Law. “…ambient CO2 is released […]
Posted in CO2 and GHG, Oceans, Paleo-climatology |
By Kenneth Richard on 26. August 2024
The modern rate of sea level rise is not even close veering outside the range of natural variability. A new study reminds us that, 8200 years ago, near-global sea levels rose 6.5 meters in a span of just 140 years. This is 470 centimeters per century, 4.7 centimeters per year, during a period when CO2 […]
Posted in Paleo-climatology, Sea Levels |
By Kenneth Richard on 19. August 2024
A new study dispels the claim that coral reefs are at risk from modern environmental changes or rates. From about 8000 to 6000 years ago the Great Barrier Reef (GBR) relative sea levels were ~2 meters higher and seas were rising at rates of ~6 to 7 meters per millennium (6-7 mm/yr). The Early Holocene […]
Posted in Coral Reefs, Paleo-climatology |
By Kenneth Richard on 15. August 2024
Yet another region has not been affected by CO2-induced “global” warming. A new biomarker temperature reconstruction (Szabó et al., 2024) spanning the last 2000 years reveals South Carpathian mean July temperatures varied from 13.4°C to 16.9°C throughout the Common Era, with an identifiable Little Ice Age and Medieval Warm Period. The mean summer temperature during […]
Posted in Cooling/Temperature, Paleo-climatology |
By Kenneth Richard on 8. August 2024
“Today there is no evidence that B. Gaini lives in permanently frozen lakes.” – Roman et al., 2024 Image Source: Public Domain Image According to a new study (Roman et al., 2024), fairy shrimp Branchinecta gaini occupied the Antarctic Peninsula’s seasonally ice-free Monolithic Lake throughout much of the last 2000 years. There were “longer ice-free […]
Posted in Antarctic, Paleo-climatology |
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