Minimum temperatures, diurnal temperature ranges, and temperature inversions in limestone sinkholes of different sizes and shapes
- Autor(en)
- Charles David Whiteman, Thomas Haiden, B Pospichal, Stefan Eisenbach, Reinhold Steinacker
- Abstrakt
Air temperature data from five enclosed limestone sinkholes of various sizes and shapes on the Hetzkogel Plateau near Lunz, Austria (1300 m MSL), have been analyzed to determine the effect of sinkhole geometry on temperature minima, diurnal temperature ranges, temperature inversion strengths, and vertical temperature gradients. Data were analyzed for a non-snow-covered October night and for a snow-covered December night when the temperature fell as low as -28.5°C. A surprising finding is that temperatures were similar in two sinkholes with very different drainage areas and depths. A three-layer model was used to show that the skyview factor is the most important topographic parameter controlling cooling for basins in this size range in nearcalm, clear-sky conditions and that the cooling slows when net longwave radiation at the floor of the sinkhole is nearly balanced by the ground heat flux. Œ 2004 American Meteorological Society.
- Organisation(en)
- Institut für Meteorologie und Geophysik
- Externe Organisation(en)
- Zentralanstalt für Meteorologie und Geodynamik (ZAMG), Pacific Northwest National Laboratory
- Journal
- Journal of Applied Meteorology
- Band
- 43
- Seiten
- 1224-1236
- Anzahl der Seiten
- 13
- ISSN
- 0894-8763
- DOI
- https://doi.org/10.1175/1520-0450(2004)043<1224:MTDTRA>2.0.CO;2
- Publikationsdatum
- 2004
- Peer-reviewed
- Ja
- ÖFOS 2012
- 1030 Physik, Astronomie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/ce639876-1888-44df-902b-b4f573e28f6f