Meteorology and Atmospheric Physics

, Volume 103, Issue 1–4, pp 195–210 | Cite as

Nocturnal temperature inversions in a small, enclosed basin and their relationship to ambient atmospheric conditions

Article

Summary

Observations from a recent meteorological experiment in the Meteor Crater, a small, near circular, enclosed basin, in northern Arizona of the United States, are used to investigate the status of the atmosphere in the basin as indicated by temperature inversion and its relationship to ambient atmospheric conditions. Strong synoptic winds aloft do not necessarily imply that no inversion could develop in the basin. Instead, the near-surface wind over the plain surrounding the basin is found to be a more important factor in determining whether the basin atmosphere would be coupled to, or decoupled from, its ambient environment. A necessary condition for the decoupling and the development of a strong inversion overnight is that the mean nighttime temperature over the plain needs to be less than 5 m s−1. The low-level stability of the ambient environment also plays an important role. It was found that as long as the bulk Richardson number over the plain is less than 0.6, turbulence would exit over the plain and influence the basin atmosphere at least partially through the night, preventing a strong temperature inversion from developing in the basin. The strength of the inversion in the basin appears to be increase exponentially with the longwave radiation loss from the upper basin sidewalls. Over the basin floor, the relation between inversion strength and longwave radiation loss is poor mainly because the cooling of air over the basin floor is a combination of radiative cooling and the drainage of cold air from the sidewalls.

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References

  1. Carson, DJ, Richards, PJ 1978Modeling surface turbulent flows in stable conditionsBound Layer Meteorol146781CrossRefGoogle Scholar
  2. Clements, CB, Whiteman, CD, Horel, JD 2003Cold-air-pool structure and evolution in a mountain basin: Peter SinksUtah J Appl Meteorol42752768CrossRefGoogle Scholar
  3. Galperin, B, Sukoriansky, S, Anderson, PS 2007On the critical Richardson number in stably stratified turbulenceAtmos Sci Let86569CrossRefGoogle Scholar
  4. Holtslag, AAM, de Bruin, HAR 1988Applied modeling of the nighttime surface energy balance over landJ Appl Meteorol27689704CrossRefGoogle Scholar
  5. Louis, JF 1979Parametric model of vertical eddy fluxes in the atmosphereBound Layer Meteorol17187202CrossRefGoogle Scholar
  6. Petkovšek, Z 1978Relief meteorologyically relevant characteristics of basinsZ Meteorol28333340Google Scholar
  7. Petkovšek, Z 1985Die Beendigung von Luftverunreinigungsperioden in TalbeckenZ Meteorol35370372Google Scholar
  8. Petkovšek, Z 1992Turbulent dissipation of cold air lake in a basinMeteorol Atmos Phys47237245CrossRefGoogle Scholar
  9. Rakovec, J, Merše, J, Jernej, S, Paradiž, B 2002Turbulent dissipation of the cold-air pool in a basin: comparison of observed and simulated developmentMeteorol Atmos Phys79196213CrossRefGoogle Scholar
  10. Reddy, PJ, Barbarick, DE, Osterburg, RD 1995Development of a statistical model for forecasting episodes of visibility degradation in the Denver metropolitan areaJ Appl Meteorol34616625CrossRefGoogle Scholar
  11. Savage, CL, Zhong, S, Yao, W, Brown, WJO, Horst, TW, Whiteman, CD 2008An observational and numerical study of a regional-scale downslope flow in Northern ArizonaJ Geophy Res113D14114DOI: 10.1029/2007JD009623. pp. 17CrossRefGoogle Scholar
  12. Smith, RB, Paegle, J, Clark, T, Cotton, W, Durran, D, Forbes, G, Marwitz, J, Mass, C, McGinley, J, Pan, HL, Ralph, M 1997Local and remote effects of mountains on weather: research needs and opportunitiesBull Am Meteorol Soc78877892Google Scholar
  13. Steinacker R, Dorninger M, Eisenbach S, Holzer AM, Pospichal B, Whiteman CD, Mursch-Radlgruber E (2002) A sinkhole field experiment in the Eastern Alps. Preprints, 10th Conf. on Mount. Meteor., 17–21 June 2002, Park City, UT, pp. 91–92Google Scholar
  14. Vergeiner I (1996) A conceptual dynamic model of foehn penetration in a valley. Proc. ICAM 96 Meeting (Bled, September 3–9, 1996), pp. 127–34Google Scholar
  15. Vrhovec, T, Hrabar, A 1996Numerical simulations of dissipation of dry temperature inversions in basinsGeofizika (Zagreb)138196Google Scholar
  16. Whiteman, CD, Zhong, S, Shaw, WJ, Hubbe, JM, Bian, X, Mittelstadt, J 2001Cold pools in the Columbia BasinWea Forecast16432447CrossRefGoogle Scholar
  17. Whiteman, CD, Pospichal, B, Eisenbach, S, Weihs, P, Clements, CB, Steinacker, R, Mursch-Radlgruber, E, Dorninger, M 2004Inversion breakup in small Rocky Mountain and Alpine basinsJ Appl Meteorol4310691082CrossRefGoogle Scholar
  18. Whiteman CD, Sebastian WH, Maura H, Zhong S (2007) METCRAX 2006 – first results from the meteor crater experiment. Preprints, 29th Conf. Alpine Meteor, 4–8 June 2007, Chambery, France, 1: 93–96Google Scholar
  19. Whiteman CD, Muschinski A, Zhong S, Fritts D, Hoch SW, Hahnenberger M, Yao W, Hohreiter V, Behn M, Cheon Y, Clements CB, Horst TW, Brown WOJ. METCRAX 2006 – Meteorological Experiment in Arizona’s Meteor Crater. Bull Am Meteorol Soc 89: 1665–80. DOI: 10.1175/2008BAMS2574.1Google Scholar
  20. Zängl, G 2005Formation of extreme cold-air pools in elevated sinkholes: an idealized numerical process studyMon Wea Rev133925941CrossRefGoogle Scholar
  21. Zhong, S, Bian, X, Whiteman, CD 2003Time scale for cold-air pool breakup by turbulent erosionMeteorol Z12229233CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  1. 1.Department of GeographyMichigan State UniversityEast LansingUSA

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