article thumbnail

Improving EPA’s Latest Ozone Transport Rule

Acoel

The proposed rule would provide de minimus air quality benefits in downwind areas with extremely high costs – estimated by EPA at $22 billion discounted 2016 dollars for the 2023-2042 period. The agency’s air quality modeling indicates that most areas would receive an ozone reduction of less than 0.1 ppb by 2025.

Ozone 40
article thumbnail

The definitive CO2/CH4 comparison post

Real Climate

The radiative forcing from these changes in concentrations can be easily calculated using standard formulas (from Etminan et al, 2016 which supersede the slightly simpler ones from IPCC TAR), as about 2 W/m 2 for the CO 2 change and 0.65 W/m 2 for CH 4. W/m<sup>2</sup> (to about 60% of the CO 2 effect since 1750).

Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

article thumbnail

Minnesota Can Do More to Protect People from Ethylene Oxide Emissions

Union of Concerned Scientists

EPA’s own scientists concluded in 2016 that the risk value of ethylene oxide is 60 times more toxic than previously understood. You can compare this to ozone which has a half-life on the order of minutes, and some PFAS chemicals that have a half-life in air on the order of several years.

2016 205
article thumbnail

The CO2 problem in six easy steps (2022 Update)

Real Climate

For some parts of the spectrum, the IR can be either absorbed by CO 2 or by water vapour or by clouds, but taking those overlaps into account we find that 50% of the greenhouse effect is from water vapour, 25% from clouds, and about 20% from CO 2 and the rest absorbed by ozone, aerosols, and other trace gases ( Schmidt et al, 2010 ).

Radiation 315
article thumbnail

China displays low-carbon tech at the Winter Olympics?

A Greener Life

This is replacing the traditional hydrofluorocarbons which have been found to damage the ozone layer. Total greenhouse gas emissions could reach 1.028 million tonnes of CO2 equivalent throughout the preparation and post-Beijing Games in 2016-2022, and about a third less than the 1.6

article thumbnail

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. In addition, ozone depletion higher up in the stratosphere has caused a cooling high up in the atmosphere.

article thumbnail

The Problems with the SCOTUS ‘Good Neighbor’ Arguments

Legal Planet

Herzog (former Emmett/Frankel Fellow at UCLA School of Law 2012-2016) and Sean H. When EPA strengthened the national ozone standard in 2015 based upon updated scientific understanding of ozone’s health harms, it triggered States’ obligation to develop Good Neighbor plans.