By Kenneth Richard on 26. February 2024
Retreat rates for the West Antarctic Ice Sheet (WAIS) were massive during the Early Holocene, when CO2 concentrations were low and stable (~265 ppm), dwarfing any retreat rates witnessed in the modern era. New research published in Nature Geoscience (Grieman et al., 2024) assesses the elevation of West Antarctica’s ice sheet fell by ~480 m within […]
Posted in Antarctic, Glaciers, Paleo-climatology |
By Kenneth Richard on 15. January 2024
“Negative TOA [top of atmosphere] forcing of CO2 increase also happens outside of Antarctica. The Arctic sometimes exhibits strong negative CO2 forcing. This phenomenon even occurs in the tropics and mid-latitudes…” – Chen et al., 2024 It has previously been reported that as CO2 increases from 380 ppm to 1000 ppm, the CO2 greenhouse effect […]
Posted in Antarctic, Arctic, Climate Sensitivity, CO2 and GHG |
By P Gosselin on 3. January 2024
Four new studies in prestigious journals show Antarctic ice shelf as stable as ever. Hat-tip: EIKE Klimaschau Andreasen et al (2023) finds net gain A study by Julia R. Andreasen and colleagues looked at the changes in ice shelves, Antarctic-wide, using MODIS (Moderate Resolution Imaging Spectroradiometer) satellite data from 2009 to 2019. Image: Andreasen et […]
Posted in Antarctic |
By Kenneth Richard on 16. November 2023
The timing of the dramatic Antarctic sea ice decline during the last deglaciation suggests solar forcing and sea ice retreat “instigated” century-scale climate warming and atmospheric CO2 change. This would appear to challenge the perception CO2 plays a causal role in glacial-interglacial sea ice and climate changes. From ~21,000 to 19,500 years ago, when CO2 […]
Posted in Antarctic, Paleo-climatology, Sea Ice |
By Kenneth Richard on 6. November 2023
Significant 21st century cooling in the Central Pacific, Eastern Pacific, and nearly all of Antarctica “implies substantial uncertainties in future temperature projections of CMIP6 models.” – Zhang et al., 2023 New research indicates West Antarctica’s mean annual surface temperatures cooled by more than -1.8°C (-0.93°C per decade) from 1999-2018. In spring, the West Antarctic Ice […]
Posted in Antarctic, Cooling/Temperature |
By P Gosselin on 2. August 2023
Alarmists have claimed lately that global warming has hit Antarctica, finally. But that hasn’t been the case at all at the Japanese Showa station. Today we present a a temperature chart of the Japanese Antarctic Showa station, located on the East Ongul Island in Queen Maud Land, Antarctica. The temperature trend at Syowa, also called Showa, has been […]
Posted in Antarctic |
By Kenneth Richard on 13. July 2023
There is a “direct link” between the location of origin for recent ice melt in Antarctica and geothermal heat flow. High geothermal heat flow (GHF) is mostly why Antarctic ice melts, not “atmospheric and ocean forcing,” which is what has been commonly thought until recently (Haeger et al., 2023). Even though atmospheric CO2 is well-mixed, […]
Posted in Antarctic, CO2 and GHG, Glaciers |
By Kenneth Richard on 5. June 2023
A new study utilizing satellite observations determines Antarctic-wide ice shelves gained 661 Gt of mass from 2009 to 2019. An approach relying on assumptions of an unrealistic “steady state” or fixed calving flux (instead of real-world time-variable observations) estimates a net Antarctic ice shelf loss of -20,028 Gt over this same 11-year period – a […]
Posted in Alarmism, Antarctic |
By Kenneth Richard on 1. June 2023
“[N]o numerical modeling work has shown that Thwaites Glacier is currently undergoing an irreversible retreat.” – Gudmundsson et al., 2023 It was only months ago that mainstream US journalists published articles claiming the Thwaites “Doomsday” Glacier has only “a few more years” until it collapses into the sea (ABC News, CBS News). This “spine-chilling” catastrophe […]
Posted in Alarmism, Antarctic, Glaciers |
By Kenneth Richard on 29. May 2023
Scientists have determined there is no measured data to “indicate thicker than present ice after 4ka” at a West Antarctic study site near the Thwaites “Doomsday” Glacier. Any ice melt observed today is thus “reversible”… and natural. The Thwaites, Pine Island, and Pope Glaciers in the Amundsen Sea region of West Antarctica are all situated […]
Posted in Antarctic, Glaciers |
By Kenneth Richard on 21. March 2023
The observed incapacity for southern elephant seals (SES) to withstand late 20th and early 21st century extreme cold and expanding sea ice conditions suggest coastal Antarctica (Victoria Land Coast, VLC) climate is colder and icier today than any time since the last glacial. A new study even suggests the last glacial (CO2 ~190 ppm) may […]
Posted in Antarctic, Cooling/Temperature, Sea Ice |
By Kenneth Richard on 26. January 2023
Independent analyses from multiple independent sources indicate Arctic Siberia was 3 to 5°C warmer than today during the peak of the last glacial, or when CO2 levels were below 200 ppm. Measurements from Antarctica’s ice sheet are almost invariably used to characterize both the global-scale atmospheric CO2 levels and climate for the last 10s to […]
Posted in Antarctic, Arctic, Paleo-climatology |
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