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New misguided interpretations of the greenhouse effect from William Kininmonth

Real Climate

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.

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The CO2 problem in six easy steps (2022 Update)

Real Climate

Step 1: There is a natural greenhouse effect. Thus there must be a large amount of IR absorbed by the atmosphere (around 158 W/m 2 ) – a number that would be zero in the absence of any greenhouse substances. Step 2: Trace gases contribute to the natural greenhouse effect. The Earth’s Energy Budget (NASA).

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The definitive CO2/CH4 comparison post

Real Climate

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.

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WMO: Update on 2023/4 Anomalies

Real Climate

As well as the (now) standard set of graphs related to increasing greenhouse gas concentrations , rising temperatures , reducing glacier mass, etc., since the 1850-1900 baseline is very clearly associated with the increases in greenhouse gases, slightly (and decreasingly) modulated by the changes in atmospheric pollution.

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Just 25 mega-cities produce 52% of the world’s urban greenhouse gas emissions

Frontiers

New research published by the open access publisher Frontiers inventories greenhouse gas emissions of 167 globally distributed cities. The study shows that just 25 mega-cities produce 52% of the greenhouse gas emissions from the studied cities. For 30 cities, there was a clear emission decrease between 2012 and 2016.

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Deciphering the ‘SPM AR6 WG1’ code

Real Climate

I think in hindsight that my concerns from 2013 to some extent were supported by the fact that the IPCC organised an Expert Meeting on Communication, Oslo, Norway, 9–10 February 2016. The cause of our changing climate is the increase in atmospheric greenhouse gas concentrations that we have released into the air.

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Livestock Operations Are Responsible for Over Half of California’s Methane Emissions—Why Won’t CARB Regulate Them?

Legal Planet

To identify which fuels should be promoted, CARB calculates the life cycle greenhouse gas emissions from transportation fuels. In these “carbon intensity” calculations, CARB is not allowed to count reductions in greenhouse gas emissions that are already required by law. Agricultural operations are almost uniquely unregulated.