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By Kenneth Richard on 25. August 2022
Share this…FacebookTwitterA late 2021 study finds water vapor and temperature changes accounted for 90% of the changes in clear-sky downwelling longwave or greenhouse effect forcing since the mid-1980s. CO2 forcing assumed a mere bit-player role. The seminal Feldman et al. (2015) study concluded it takes 10 years and a 22 ppm increase in CO2 to […]
Posted in Climate Sensitivity, Cloud Climate Influence, CO2 and GHG |
By Kenneth Richard on 22. August 2022
Share this…FacebookTwitterScientists 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 […]
Posted in Cloud Climate Influence, CO2 and GHG, Solar Sciences |
By Kenneth Richard on 18. August 2022
Share this…FacebookTwitterEarly Venus is suggested to have been much colder – and thus habitable – due to higher concentrations of CO2…because CO2 drives cooling in most of the Venus atmosphere (stratosphere, mesosphere, thermosphere). Scientists have for decades agreed it is “well recognized” that CO2 molecules radiatively cool the atmospheres of planets like Earth, Mars, and […]
Posted in CO2 and GHG, Cooling/Temperature |
By Kenneth Richard on 8. August 2022
Share this…FacebookTwitterCloud modulation of shortwave radiation and greenhouse effect forcing has largely been the determining factor in the global warming of the last 45 years. Not CO2. CO2 forcing and its effect on surface temperatures is detailed in analyses of changes in clear-sky radiation only because all-sky radiation effects that include clouds (and the real-world […]
Posted in Cloud Climate Influence, CO2 and GHG, Natural Variability |
By Kenneth Richard on 30. June 2022
Share this…FacebookTwitterCO2 and water vapor greenhouse effect impacts are not independent climate forcings . A new study affirms the “variance in the radiance in these channels is primarily controlled by…temperature” and “atmospheric absorption is strongly saturated in these [CO2, water vapor] channels”. It has previously been established that greenhouse gas (water vapor, CO2) forcing “cannot […]
Posted in Climate Sensitivity, CO2 and GHG |
By Kenneth Richard on 20. June 2022
Share this…FacebookTwitterProfessor Herman Harde, an environmental physicist, has authored a new position paper on the follies of assuming humans significantly impact the climate. As detailed in his 2017 paper, Dr. Harde concludes the “anthropogenic contribution to the actual CO2 concentration is found to be 4.3% [a figure derived from IPCC AR5], its fraction to the […]
Posted in Climate Sensitivity, CO2 and GHG |
By P Gosselin on 15. June 2022
Share this…FacebookTwitterThe impact of ruminants on climate has been overestimated by a factor of 3 to 4, according to Prof. Dr. Dr. habil Wilhelm Windisch of the Technical University of Munich. Methane from cows doesn’t effect climate anywhere near as much as alarmists claim, Munich professor says. Photo: Copyright P. Gosselin Going without beef burgers […]
Posted in Agriculture, Alarmism, CO2 and GHG |
By Kenneth Richard on 2. June 2022
Share this…FacebookTwitterInstead of focusing on probabilistic percentages and constructed correlations between two events in efforts to determine potential causality, 4 scientists have revisited the requisite conditions for causality in applying the scientific method. They find “the common perception that increasing CO2 causes increased [temperature] can be excluded because it violates the necessary condition for this […]
Posted in CO2 and GHG, Emissions |
By Kenneth Richard on 16. May 2022
Share this…FacebookTwitterA new study indicates nearly all the Northern Hemisphere and Tropical warming in the last 40 years occurred by the late 1990s. CO2 has risen by about 50 ppm since 1998 (367 to 418 ppm). Interestingly, upper-air measurements of temperature from balloon-borne sensor radiosonde data, shown below in the image from a new study […]
Posted in CO2 and GHG, Emissions, Oceans |
By Kenneth Richard on 14. April 2022
Share this…FacebookTwitterIt takes 10 years and 22 ppm for CO2 to amass just 0.2 W/m² in total surface energy flux. In contrast, short-wave cloud radiative forcing fluctuations vary in amplitude by ±300 W/m² within hours. Earth’s surface energy imbalance is said to have been positive, +0.6 W/m², during the first decade of this century (Stephens […]
Posted in Cloud Climate Influence, CO2 and GHG |
By Kenneth Richard on 11. April 2022
Share this…FacebookTwitterThe ratio of the annual CO2 increase divided by the annual fossil fuel emission rate increase is referred to as the “airborne fraction.” It has long been assumed the airborne fraction should increase as fossil fuel emissions increase. But the opposite has happened. Scientists have expressed consternation that the airborne fraction of anthropogenic CO2 […]
Posted in CO2 and GHG, Models |
By Kenneth Richard on 4. April 2022
Share this…FacebookTwitterRecent reconstructions suggest CO2 concentrations may have ranged between 150 and 600 ppm (or more) throughout the last 4 million years. We routinely see screaming headlines such as CO2 in the Atmosphere Climbs to Highest Level in 4.5 Million Years or Carbon Dioxide Levels Reach Highest Point in Human History. However, these claims that […]
Posted in CO2 and GHG, Paleo-climatology |
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