Temporal patterns and vertical temperature gradients in micro-scale drainage flow observed using thermal imaging
- Micro-scale cold-air flow along a gentle slope was analyzed using thermal infrared imaging (TIR), focusing exclusively on the lowermost 2 m above ground. Cold-air pulses were analyzed with regard to their vertical temperature stratification as well as flow characteristics, such as flow speed. Analyses on the transition zone between the near-surface very stable inversion layer and the less stable, warmer air above highlight turbulent situations and detrainment effects at the cold-air inversion top. Using thermal imaging in a high spatiotemporal resolution with up to 90 vertical data points and TIR pixels for 1.5 m cold-air depth, a high-precision cold-air flow analysis was realized.
| Author: | Anja Martina GrudzielanekGND, Jan CermakGND |
|---|---|
| URN: | urn:nbn:de:hbz:294-64566 |
| DOI: | https://doi.org/10.3390/atmos9120498 |
| Parent Title (English): | Atmosphere |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2019/05/23 |
| Date of first Publication: | 2018/12/14 |
| Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
| Tag: | Open Access Fonds micro-scale cold-air flow; nocturnal drainage flow; remote sensing; thermal infrared imaging |
| Volume: | 9 |
| Issue: | 12 |
| First Page: | 498-1 |
| Last Page: | 498-16 |
| Note: | Atmosphere , Bd. 9.2018, H. 12, Artikelnummer 498 |
| Note: | Article Processing Charge funded by the Deutsche Forschungsgemeinschaft (DFG) and the Open Access Publication Fund of Ruhr-Universität Bochum. |
| Institutes/Facilities: | Geographisches Institut |
| Dewey Decimal Classification: | Naturwissenschaften und Mathematik / Geowissenschaften, Geologie |
| open_access (DINI-Set): | open_access |
| faculties: | Fakultät für Geowissenschaften |
| Licence (English): |  Creative Commons - CC BY 4.0 - Attribution 4.0 International |
