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Verlagsausgabe
DOI: 10.5445/IR/1000088649
Veröffentlicht am 17.12.2018
Originalveröffentlichung
DOI: 10.3390/atmos9120498

Temporal Patterns and Vertical Temperature Gradients in Micro-Scale Drainage Flow Observed Using Thermal Imaging

Grudzielanek, Anja Martina; Cermak, Jan

Abstract:
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.


Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Institut für Photogrammetrie und Fernerkundung (IPF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2073-4433
URN: urn:nbn:de:swb:90-886496
KITopen-ID: 1000088649
HGF-Programm 12.01.01 (POF III, LK 01)
Erschienen in Atmosphere
Band 9
Heft 12
Seiten Article: 498
Vorab online veröffentlicht am 14.12.2018
Schlagworte micro-scale cold-air flow; thermal infrared imaging; remote sensing; nocturnal drainage flow
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