An Experiment in Numerical Prediction of Fog and Stratus

Fisher, Edwin L.; Caplan, Peter

doi:10.1175/1520-0469(1963)020<0425:aeinpo>2.0.co;2

Cited by 42 publications

(18 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It implies only that K increases with decreasing stability and decreases with increasing stability. This is similar to the expression, K=K* exp (-a (**/*z) ) adopted by Fisher and Caplan (1963) in the prediction model of fog. K* is the exchange coefficient which might be expected under adiabatic conditions and is prescribed to be 10 m2 sec-1 here.…”

Section: Results Of Calculationssupporting

confidence: 76%

A Numerical Study of the Air-Mass Transformation over the Japan Sea in Winter

Asai¹

1965

Journal of the Meteorological Society of Japan

View full text Add to dashboard Cite

Section: Results Of Calculationssupporting

confidence: 76%

A Numerical Study of the Air-Mass Transformation over the Japan Sea in Winter

Asai¹

1965

Journal of the Meteorological Society of Japan

View full text Add to dashboard Cite

“…Radiosondes, tethered balloons and remote sensing techniques were used in the experiments which involved surface and vertical measurements of various meteorological parameters including turbulence and surface fluxes (for PARISFOG), downward longwave and shortwave fluxes (for both experiments), aerosol and fog microphysics measurements. Moreover, lots of efforts have focused on the study of fog through 1-D, 2-D and 3-D numerical models (Fisher and Caplan, 1963;Zdunkowski and Nielsen, 1969;Brown and Roach, 1976;Oliver et al, 1978;Brown, 1980;Welch et al, 1986;Forkel, 1987;Tardif and Rasmussen, 2007). Most of these studies were related to radiation and sea fog.…”

Section: Introductionmentioning

confidence: 99%

Fog characteristics at the airport of Thessaloniki, Greece

Stolaki¹,

Kazadzis

Foris

et al. 2009

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract.A statistical approach in order to study fog event characteristics occuring at the airport of Thessaloniki, Northern Greece is presented in this work. To achieve this, the seasonal and diurnal characteristics of fog are investigated using 35 years of observations of meteorological parameters such as: visibility, air temperature, dew point temperature, air relative humidity, wind vector, precipitation, and cloud base height and coverage. Hourly surface observations of fifteen (15) years (1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005) are used to identify fog events induced by various physical mechanisms. Fog events are classified into fog types through the application of objective criteria that are derived upon fog formation processes and under the influence of various physiographic features. The temporal variability of different fog type occurrences are examined and the events are characterized according to their duration and intensity.

show abstract

“…h is the height of the surface boundary layer, and a, n, and K(h) are prescribed constants. A similar approach was tried by Fisher and Caplan (1963), who used…”

Section: Problems With K-theory Over Homogeneous Terrainmentioning

confidence: 99%

Eddy exchange coefficients in numerical models of the planetary boundary layer

Shir

Bornstein

1977

Boundary-Layer Meteorol

View full text Add to dashboard Cite

Abstract. Specification of the eddy exchange coefficients is perhaps one of the most difficult problems in the numerical modeling of the planetary boundary layer. These coefficients have been computc::d from finite-difference analogs 10 analytical expressions associated with surface boundary-layer similarity theory, which is based on observations in an equilibrium surface layer. This procedure leads to erroneous results in the region above the surface layer and in a non-equilibrium surface layer. In addition, differencing problems arise in regions of small vertical wind shear. A new turbulence transport model has been obtained through the closure procedures for the transport equations of the Reynolds s.tress and the turbulent length scale. The new approach could be used to calculate Reynolds stresses and eddy exchange coefficients throughout a non-neutral planetary boundary layer under non-equilibrium conditions.

show abstract

An Experiment in Numerical Prediction of Fog and Stratus

Cited by 42 publications

References 0 publications

A Numerical Study of the Air-Mass Transformation over the Japan Sea in Winter

A Numerical Study of the Air-Mass Transformation over the Japan Sea in Winter

Fog characteristics at the airport of Thessaloniki, Greece

Eddy exchange coefficients in numerical models of the planetary boundary layer

Contact Info

Product

Resources

About