Air, clouds, climate - some physical basics about the atmosphere
- Veranstaltungen
- Brötchen-und-Borussia

The gases in the atmosphere and water in the form of clouds in the sky contain exciting physics. Radiation from the sun provides the energy that drives the dynamics in our atmosphere. Powerful thermodynamic processes create the harmless-looking fleecy clouds in the summer sky and can carry gliders hundreds of kilometers. With only small changes in the atmosphere, the same processes create threatening storm clouds with lightning and hail. The increase in carbon dioxide concentration generated by fossil fuels influences the energy balance in the atmosphere and thus our climate. The underlying physical phenomena are explained and demonstrated with experiments.
![Band structure of 2D semimetal based on HgTe quantum well. Experimental points are obtained from the analysis of the cyclotron resonance in the quasi-classical approximation. Solid lines are predictions of the kp theory with no free parameters. Splitting of the conduction (e1,2) and valence (h1) band is due to the quantum confinement. [J. Gospodaric, AP, et al., PRB 104, 115307].](/storages/physik/_processed_/b/5/csm_Kolloquium_Pimenov_0fa7761647.png)





