By Kenneth Richard on 4. January 2024
AGW proponents use subjective forcing models and unmeasured estimates of past solar activity to claim humans drive warming. A scientist’s (Larminat, 2023) reassessment finds the Sun can drive climate, equilibrium climate sensitivity (ECS, 2xCO2 + feedbacks) is 1.14°C, and human forcing is overestimated. Because there have been no direct measurements of solar activity until the […]
Posted in Climate Sensitivity, Solar Sciences |
By Kenneth Richard on 5. October 2023
Solar forcing may have a 4 to 7 times greater effect on climate change than current climate models indicate, which may mean modern climate change is predominantly natural rather than anthropogenic. Anthropogenic global warming (AGW) attribution may be significantly dependent on the choice of dataset. Advocates of AGW may only use Total Solar Irradiance (TSI) […]
Posted in CO2 and GHG, Solar Sciences |
By Kenneth Richard on 28. September 2023
CO2 “only affects a small range of long-wave re-radiation from the surface of the Earth,” and there “seems to be no connection between carbon dioxide and the temperature of the Earth.” − Harris, 2023 New research published in the MDPI journal atmosphere by Dr. Stuart A. Harris asserts past and modern climate changes are natural […]
Posted in Climate Sensitivity, CO2 and GHG, Natural Oceanic Oscillations, Solar Sciences |
By Kenneth Richard on 22. September 2023
“The first modern GSM1 [Grand Solar Minimum] occurs in 2020 – 2053 with the cycle amplitudes reduction to 80% in cycle 25, to 30% in cycle 26 and to 70% in cycle 27 from the maximum amplitude of cycle 24.” − Zharkova et al., 2023 Per a new study, Earth’s Total Solar Irradiance (TSI) has […]
Posted in Cooling/Temperature, Solar Sciences |
By Kenneth Richard on 7. September 2023
More and more evidence is emerging that the modern warming trends are naturally driven, not anthropogenic. Per CERES observations the surface incident shortwave (SW) radiation anomaly increased by +1.61 W/m² from 2001 to 2019, and +1.75 W/m² from 2001 to 2021 (Ollila, 2023). This SW increase is likely due to natural variations in cloud cover […]
Posted in Cloud Climate Influence, Natural Variability, Solar Sciences
By Kenneth Richard on 4. September 2023
Nearly all of the alleged anthropogenic link to climate change can be removed simply by exchanging and/or replacing biased temperature and solar activity data sets. A new study authored by 37 scientists in the journal Climate finds using rural-only Northern Hemisphere temperature data (i.e., removing artificial, non-climatic urban heat effects) reduces the post-1850 warming trend […]
Posted in Natural Variability, Solar Sciences, Temperature Bias/Urbanization |
By Kenneth Richard on 24. April 2023
A new study exposes the uncertainty in solar activity reconstructions, but suggests solar models explain climate changes far better than atmospheric CO2 concentrations. Proxy model estimates of the impact of solar variability on climate are highly uncertain. For example, estimations of the increase in solar irradiance over the last 400 years range anywhere from 0.75 […]
Posted in CO2 and GHG, Paleo-climatology, Solar Sciences |
By Kenneth Richard on 15. December 2022
Yet another observational study determines changes in Earth’s reflectiveness, or planetary albedo, may be primarily responsible for 21st century climate forcing. Earth’s radiation budget at the top of atmosphere (TOA) is predominantly controlled by internal changes in cloud cover. A declining albedo – linked to declining cloud cover – corresponds to an increase in the […]
Posted in Cloud Climate Influence, Solar Sciences |
By Kenneth Richard on 8. December 2022
Of the warming trends in Poland and greater Europe, “only about 4–5% are explained by an increase in CO2 concentration.” – Marsz et al., 2022 Internal changes to the thermal structure of the ocean transmit decadal-scale changes in the atmospheric circulation and consequent surface air temperature via its modulating impact on the variation in the […]
Posted in Climate Sensitivity, Cloud Climate Influence, CO2 and GHG, Solar Sciences |
By Kenneth Richard on 22. August 2022
Scientists have once again affirmed the 2000-2020 total greenhouse effect (longwave) forcing has been declining in recent decades just as absorbed solar radiation has been increasing due to cloud albedo modulation. The latter explains the net positive Earth Energy Imbalance (EEI) and consequent global warming during this period. Recently we detailed the satellite-observed decline in […]
Posted in Cloud Climate Influence, CO2 and GHG, Solar Sciences |
By Kenneth Richard on 4. August 2022
Adding reflectors to roofs and pavements and similar strategies could globally reflect 87 W/m² more incoming solar radiation than is reflected on an annual basis currently, cooling the surface. In contrast, the sum of the accumulated annual anthropogenic radiative forcing from greenhouse gases (GHG) since 1750 is 2.72 W/m². A new study analyzes the effectiveness […]
Posted in Emissions, Solar Sciences |
By Kenneth Richard on 23. June 2022
From about 11,000 to 9,000 years ago the summer solar irradiance absorbed by the Earth’s surface has been estimated to be 40-60 W/m² greater than today from latitudes 40°N to 70°N (Ullman et al., 2015). These values seriously undermine the claim CO2 is the driver of climate change. Image Source: Ullman et al., 2015 Despite […]
Posted in Climate Sensitivity, Solar Sciences |
Recent Comments