Green Car Congress
MAY 12, 2020
Levels of two major air pollutants have been reduced significantly since lockdowns began in response to the COVID-19 pandemic, but a secondary pollutant—ground-level ozone—has increased in China, according to new research. For comparison, columns over the same time periods are shown for 2019. —Guy Brasseur.
Green Car Congress
MAY 5, 2014
Ozone pollution across the continental United States will become far more difficult to keep in check as temperatures rise, according to new work led by the National Center for Atmospheric Research (NCAR). Ozone formation. Even short periods of unhealthy ozone levels can cause local death rates to rise. Scenario A2 and RCP 8.5.
Green Car Congress
MAY 17, 2020
Deterioration of the ozone layer [kg CFC-11-eq.]. The Carculator graphically presents these values for all selected vehicles in parallel, for ease of comparison. The Carculator was developed as part of the initiative on Efficient Technologies and Systems for Mobility of the Swiss Competence Center for Energy Research (SCCER Mobility).
Green Car Congress
NOVEMBER 10, 2011
the combined heating effect of long-lived greenhouse gases added to the atmosphere by human activities has increased by 29% since 1990, the index year used as a baseline for comparison. It also includes several chemicals known to deplete Earth’s protective ozone layer, which are also active as greenhouse gases. in 2010—i.e.,
Green Car Congress
NOVEMBER 10, 2009
HFO-1234yf is a non-Ozone Depleting Substance with a Global Warming Potential (GWP) of 4. In comparison, the current refrigerant, R-134a, has a GWP of 1,430. As part of the studies, the automotive industry conducted evaluations on a variety of vehicle applications.
Green Car Congress
APRIL 4, 2011
million metric tons of avoided ozone-related yield losses of major food crops; $US0.6-2.4 While reductions in particulate matter tend to produce local health benefits, the scientists found health and agricultural benefits from reduced ozone disperse more widely. In comparison, the Northern Hemisphere has warmed by about 0.3°C
Green Car Congress
OCTOBER 30, 2009
Despite their limitations, GWPs are widely used for comparison among long-lived gases, forming the basis for worldwide political agreements on climate and carbon trading. And hydroxyls drive long chains of reactions involving other common gases, including ozone. Similar reactions influence the creation of nitrate aerosols.
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