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Describing surface ...
Describing surface fluxes in katabatic flow on Breidamerkurjökull, Iceland
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- Parmhed, Oskar (författare)
- Stockholms universitet,Meteorologiska institutionen (MISU)
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- Oerlemans, Johannes (författare)
- Utrecht University
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- Grisogono, Branko (författare)
- Stockholms universitet,Meteorologiska institutionen (MISU)
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(creator_code:org_t)
- Royal meteorological Society, 2004
- 2004
- Engelska.
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Ingår i: Quarterly Journal of the Royal Meteorological Society. - : Royal meteorological Society. - 0035-9009 .- 1477-870X. ; 130:598, s. 1137-1151
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- For very stable boundary layers there is no well-accepted theory today. In this study, an improved Prandtl model with varying diffusivity is applied to less than ideal conditions for pure katabatic flow pertaining to very stable boundary layers. We find that the improved Prandtl model adequately describes the usual and persistent katabatic glacier wind on Breidamerkurjökull. This is true even for flows with very different heights and strengths of the jet. A theoretical estimate of the katabatic jet height, based on temperature deficit and lapse rate, is verified. The calculated surface fluxes compare well with the measured turbulence parameters. A possible reason for the robustness of the katabatic jet (and other low-level jets) is given in terms of the Scorer parameter. Copyright © 2004 Royal Meteorological Society.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
Nyckelord
- Glacier wind
- Low-level jet
- Very stable boundary layer
- WKB method
- Meteorology
- Meteorologi
- meteorologi
- Meteorology
Publikations- och innehållstyp
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- art (ämneskategori)
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