Green Car Congress
JUNE 12, 2023
A study led by Norwegian climate center CICERO has found that the global warming effect of leaked hydrogen is almost 12 times stronger than that of CO 2. Hydrogen is not a greenhouse gas, but its chemical reactions in the atmosphere affect greenhouse gases such as methane, ozone, and stratospheric water vapor. Sand et al.
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. Ozone is harmful to humans at ground-level, causing pulmonary and heart disease. —Guy Brasseur.
Green Car Congress
FEBRUARY 6, 2018
Ozone levels across much of North America and Europe dropped significantly between 2000 and 2014. People living in parts of southern Europe, South Korea and southern Japan and China also experienced more than 15 days a year of ozone levels above 70 ppb. Trends in daily maximum ozone levels (known as 4MDA8) at urban and non-urban sites.
Green Car Congress
JULY 9, 2009
Researchers in France have found that ozone depletion above Antarctica has significantly reduced the Southern Ocean’s ability to absorb atmospheric CO 2 and has also accelerated acidification of southern polar waters, despite lesser CO 2 uptake. The results revealed that, between 1987 and 2004, around 2.3 Lenton, A., Tagliabue, and J.
Green Car Congress
SEPTEMBER 6, 2013
The US reached separate agreements with the G-20 and with China to address the rapid growth in the use and release of climate-damaging hydrofluorocarbons (HFCs). Left unabated, HFC emissions could grow to nearly 20% of carbon dioxide emissions by 2050, a serious climate mitigation concern.
Green Car Congress
MARCH 12, 2019
years); and 105 in France (reduction in life expectancy of 1.6 When we use clean, renewable energy, we are not just fulfilling the Paris Agreement to mitigate the effects of climate change, we could also reduce air pollution-related death rates in Europe by up to 55%. They focused particularly on PM 2.5 —Prof Lelieveld.
Green Car Congress
NOVEMBER 10, 2009
HFO-1234yf is a non-Ozone Depleting Substance with a Global Warming Potential (GWP) of 4. Tags: Climate Change Emissions Vehicle Systems. Issues concerning HFO-1234yf investigated in CRP 1234 included; safety and risk assessment; air-conditioning system efficiency and performance; material compatibility; flammability; and toxicity.
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