| Acronym | Meaning |
| SPO | Spin Projection Operator |
| ERAST | Environmental Research Aircraft And Science Technology |
| ULEV | Ultra Low Emission Vehicle |
| IIAES | Ion Induced Auger Electron Spectroscopy |
| CAEC | Center For Analysis Of Environmental Change |
| EESL | Environmental Ecological And Support Laboratory |
| ISSJ | International Scientific Station Of The Jungfraujoch (atm. Observatory |
| MERIS | Medium Resolution Imaging Spectrometer |
| RDGTO | (back-)rotated Distributed Gaussian-type Orbital |
| SPEM | Scanning Photoemission Microscopy |