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The open-access paper is published in Nature Communications Earth & Environment. Hydrogen is not a greenhouse gas, but its chemical reactions in the atmosphere affect greenhouse gases such as methane, ozone, and stratospheric water vapor. Commun Earth Environ 4, 203 doi: 10.1038/s43247-023-00857-8 Skeie, R.B., Sandstad, M.
The study was published in the journal Atmospheric Environment. Net warming from NO x emissions is a sum over warming (short-term ozone increase) and cooling (decreases in methane and stratospheric water vapor, and a long-term decrease in ozone) terms. Aviation accounts for 3.5% Pitari, M.J. Prather, R. Sausen, L.J.
Through a recent modeling experiment, a team of NASA-funded researchers have found that future concentrations of carbon dioxide and ozone in the atmosphere and of nitrogen in the soil are likely to have an important but overlooked effect on the cycling of water from sky to land to waterways. Cronin, J. Melillo, D. Kicklighter, C.
have developed a simulator able to predict tropospheric ozone concentrations across the whole of South and East Asia. Tropospheric ozone is the main cause of photochemical smog, an atmospheric pollutant harmful to human health and plant growth. Toyota Motor Corporation (TMC) and Toyota Central R&D Labs.,
The European Parliament is calling for fast action to reduce non-CO 2 climate forcers including black carbon soot, hydrofluorocarbons (HFCs), methane, and ground-level ozone, which together are responsible for nearly half of climate forcing. Because these climate forcers are short-lived, reducing them produces a fast climate response.
R134a replaced CFC-12 as the MAC refrigerant in the early 1990s due to the negative impact of CFCs on the Earth’s ozone layer. For these reasons, Germany’s Federal Environment Agency (Umweltbundesamt, UBA) took the position in the late 2000s that R134a should be replaced by the natural refrigerant R744.
Both studies indicate a qualitatively similar response of a reduction in radiative forcing or an increase in total outgoing radiation for an increase in urban albedo and the values indicate an approximate range in potential emitted CO2 offset that may be expected if urban albedos were increased. —Menon et al.
The study by Nadine Unger, Drew Shindell and James Wang will appear in an upcoming issue of the journal Atmospheric Environment. S1 offers additional improvements to ozone and black carbon air quality whereas S2 implies substantial degradation of sulfate air quality. Environ. , Unger et al. Click to enlarge. 2009.03.021.
A separate Emissions Gap Report by UN Environment, to be released today, tracks the policy commitments made by countries to reduce greenhouse gas emissions and analyses how these policies will translate into emissions reductions through 2030, clearly outlining the emissions gap and what it would take to bridge it. parts per billion.
And so if you look at the Earth from space and you see that shiny blue marble, the principle is that if you could make the atmosphere or the Earth about 1% more reflective, that you might be able to offset a doubling of CO2 or two or more degrees of warming. And that was based on observations of volcanoes. So it’s been observed before.
In a new study published online 10 March in the ACS journal Environmental Science and Technology , however, Stanford University professor Mark Jacobson finds that local CO 2 emissions in isolation may increase local ozone and particulate matter. Although the health impacts of such changes are uncertain, he notes, they are of concern.
Neutral richii @ Apr 19th 2009 5:28PM @ everyone, I can see what your trying to say, that without gas powered vehicles that a much larger strain will be put on electrical facilities that also contribute to air pollution and degrade our environment. but its never even been close to the amount of garbage that gas power vehicles produce.
1990; Anisimov, 2007] and chemical production of ozone in already-polluted locations [Jacobson, 2008b]. These three gases are all greenhouse gases, and ozone is a surface air pollutant. Jacobson is a senior fellow at the Woods Institute for the Environment. Dessler et al., 2008] and methane [Schutz et al., Guenther et al.,
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