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The Amazon rainforest is the largest forest on earth. Its trees emit huge amounts of volatile substances that influence the chemical composition of the air. Some of these substances are the so-called sesquiterpenes, very reactive chemicals that can rapidly consume ozone. Until recently scientists st more
Scientists have now observed a particularly rapid type of pair production in the laboratory: Hydrocarbons double when two peroxyl radicals react with each other. This means that stable products with the carbon skeleton of both peroxyl radicals are formed, which very likely will have a peroxide struc more
Fine particulates have numerous sources – not only traffic, which is currently under particular scrutiny. Reducing agricultural emissions could also considerably reduce the particulate levels that are hazardous to health, concludes a study by researchers at the Max Planck Institute for Chemistry in more
Did you know that the ocean launches bacteria and other goo into the atmosphere? And that those particles can seed clouds? Atmospheric chemist Kimberly Prather of UCSD and the Scripps Institution of Oceanography drops some serious knowledge on us. more
Having already looked at the chemistry behind the smell of rain, here’s a look at some of the science behind thunderstorms. How does lightning happen, what gives it its blue-violet tinge, and what does it have to do with plant growth? more
Sources and reactions of atmospheric organic molecules containing nitrogen. more
We’re heading out of this world for today’s post, to examine the atmospheric compositions of the other planets in the solar system, as well as our own. Practically every other planet in our solar system can be considered to have an atmosphere, apart from perhaps the extremely thin, transient atmosph more
Interactions of N2O5 with water media are of great importance in atmospheric chemistry and have been the topic of extensive research for over two decades. Nevertheless, many physical and chemical properties of N2O5 at the surface or in bulk water are unknown or not microscopically understood. This s more
Stephen White, Dennys Angove, Kangwei Li, Ian Campbell, Adrian Element, Brendan Halliburton, Steve Lavrencic, Donald Cameron, Ian Jamie, Merched Azzi Environmental context. Chemical mechanisms are an important component of predictive air quality models that are developed using smog chambers. In s more
Obtaining rate constants and tropospheric lifetimes of Criegee intermediates is of critical significance for atmospheric modeling. We report calculations that can produce quantitative rate constants by variational transition state theory with corner-cutting tunneling based on implicit potential ener more
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