Atmospheric physics and chemistry

Atmospheric chemistry.

T he field of atmospheric chemistry is very broad, both in the problems addressed and in the approaches taken. Thus, it includes laboratory and theoretical studies, field measurements, and modeling, and addresses chemistry from the lower to the upper atmosphere, in remote and polluted regions, from marine to continental areas, and both outdoors and indoors. Given this complexity, it is impossib...

Radiation Physics and Chemistry

We review an atomic resolution imaging method based on the analysis of the fine structure in X-ray absorption anisotropy, which results from incident beam diffraction. For a polychromatic X-ray beam, due to the suppression of higher order diffraction fringes, X-ray absorption anisotropy patterns can be interpreted as distorted real-space projections of the atomic structure around absorbing atom...

The Physics and Chemistry

To appreciate the following story, we need to be familiar with the setting, the cast, their observational appearance and their physical interactions. Here, each member of the cast – gas, dust, cosmic rays, magnetic fields and radiation – is introduced and their potential behaviour is studied. Stars form in clouds. Like atmospheric clouds, they are largely molecular and opaque. However, star-for...

Atmospheric Chemistry and Greenhouse Gases

Atmospheric Composition, Chemistry, and Clouds

Venus’ atmosphere has a rich chemistry involving interactions among sulfur, chlorine, nitrogen, hydrogen, and oxygen radicals. The chemical regimes in the atmosphere range from ion-neutral reactions in the ionosphere to photochemistry in the middle atmosphere to thermal equilibrium chemistry and surface-atmosphere reactions in the lower atmosphere. This variety makes Venus an important planet t...