Real Climate
OCTOBER 1, 2022
Another clue is William Kininmonth’s ‘rethink’ on the greenhouse effect for The Global Warming Policy Foundation. When looking at the effect of changes in greenhouse gases, one must look at how their forcing corresponds to the energy balance at the top of the atmosphere. 679-688, 2016. 679-688, 2016. References.
Real Climate
JULY 10, 2022
Step 1: There is a natural greenhouse effect. This means that there is an upward surface flux of IR around (~398 W/m 2 ), while the outward flux at the top of the atmosphere (TOA) is roughly equivalent to the net solar radiation absorbed (~240 W/m 2 ). Step 2: Trace gases contribute to the natural greenhouse effect.
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Real Climate
SEPTEMBER 19, 2021
So this is an attempt to put all of that in context and provide a hopefully comprehensive guide to how, when, and why to properly compare the two greenhouse gases. You might recall that GWP is defined as the ratio on per-kg basis of the temperature impact of other greenhouse gases compared to CO 2 over a specific time period.
Real Climate
NOVEMBER 11, 2023
A friend asked me if a discussion paper published on Statistics Norway’s website, ‘ To what extent are temperature levels changing due to greenhouse gas emissions? ’, was purposely timed for the next climate summit ( COP28 ). See for instance Benestad (2016). I don’t know the answer to his question.
Global Green
DECEMBER 3, 2020
According to the United States Environmental Protection Agency, the largest source of greenhouse gas emissions is from transportation. That’s why gas-powered cars need complex and expensive radiator systems with their associated belts, pipes, and heat exchangers. As of 2016, wind provided 8 percent of US electric generation.
Real Climate
AUGUST 9, 2021
The radiative forcing bar chart has gone full circle: Almost every IPCC report has a version of the radiative bar chart showing the contributions over the historical period of all the different forcings (greenhouse gases, aerosols, solar, etc.). Oddly enough this is most reminiscent of the very first bar chart that appeared in Hansen et al.
Legal Planet
NOVEMBER 8, 2021
Methane is essential to control, since stabilizing climate requires reducing all anthropogenic greenhouse-gas emissions to net-zero. Methane also has indirect effects on heating, due to chemical interactions by which methane changes the levels of other greenhouse gases. And more methane initiatives are surely on the way.
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