Meteorological problems. - I. Travelling cyclones. By V. H. RVD. Copanhagen, Danske Meteorologiske Institut. Meddelelser No. S, 1923. 8°. Pp. 124. Kr. 500

1924 ◽  
Vol 50 (209) ◽  
pp. 81-83
Author(s):  
F. J. W. Whipple
Keyword(s):  
Meteorological Problems

Meteorological Problems in Forecasting Mountain Waves*

1954 ◽  
Vol 35 (8) ◽  
pp. 363-371 ◽  
Author(s):  
DeVer Colson
Keyword(s):  
Static Stability ◽  
Mountain Range ◽  
Mountain Wave ◽  
Mountain Waves ◽  
Wave Development ◽  
Strong Winds ◽  
Wind Shears ◽  
Upper Level ◽  
Meteorological Problems ◽  
Meteorological Phenomenon

The standing-wave development to the lee of prominent mountain ridges presents not only an interesting meteorological phenomenon but also a definite hazard to certain aircraft operations. An analysis of the mountain-wave observations in the Sierras indicates the presence of strong winds normal to the mountain range as well as large vertical wind shears; and an inversion or at least a stable layer near the level of the mountain crest. Changes in the pressure and temperature patterns at both the surface and 500-mb level are shown for two examples of more intense wave developments. Also, mean surface and upper-level pressure and temperature patterns are shown for the strong-wave days. The association between these mean patterns and surface frontal movements, upper-level troughs, strong temperature gradients, and the jet stream are discussed. An example of the effect of wind shear and static stability is shown using equations and methods developed by Scorer. Data on the occurrence of mountain-wave activity in other mountainous areas of the West are now being collected. Two examples of these results are shown.

scholarly journals Solar Energy Prediction: An International Contest to Initiate Interdisciplinary Research on Compelling Meteorological Problems

2015 ◽  
Vol 96 (8) ◽  
pp. 1388-1395 ◽  
Author(s):  
Amy McGovern ◽  
David John Gagne ◽  
Jeffrey Basara ◽  
Thomas M. Hamill ◽  
David Margolin
Keyword(s):  
Solar Energy ◽  
Interdisciplinary Research ◽  
Energy Prediction ◽  
Meteorological Problems

scholarly journals Numerical integration of the axisymmetric Robinson-Trautman equation by a spectral method

1999 ◽  
Vol 41 (2) ◽  
pp. 271-280 ◽  
Author(s):  
D. A. Prager ◽  
A. W.-C. Lun
Keyword(s):  
Numerical Integration ◽  
Spectral Decomposition ◽  
Finite Difference Schemes ◽  
Qualitative Comparison ◽  
Transform Method ◽  
Higher Order Modes ◽  
Spectral Transform ◽  
Long Time ◽  
Bondi Mass ◽  
Meteorological Problems

AbstractWe have adapted the Spectral Transform Method, a technique commonly used in non-linear meteorological problems, to the numerical integration of the Robinson-Trautman equation. This approach eliminates difficulties due to the S2 × R+ topology of the equation. The method is highly accurate for smooth data and is numerically robust. Under spectral decomposition the long-time equilibrium state takes a particularly simple form: all nonlinear (l ≥ 2) modes tend to zero. We discuss the interaction and eventual decay of these higher order modes, as well as the evolution of the Bondi mass and other derived quantities. A qualitative comparison between the Spectral Transform Method and two finite difference schemes is given.

scholarly journals Investigation of dust storms in Ilam and the performance analysis of simulation of 6 numerical prediction models at a severe dust storm in west of Iran

2019 ◽  
Author(s):  
Sara Karami ◽  
Nasim Hossein Hamzeh ◽  
Faezeh Noori ◽  
Abbas Ranjbar
Keyword(s):  
Performance Analysis ◽  
Dust Storm ◽  
Satellite Images ◽  
Prediction Models ◽  
Statistical Investigation ◽  
Dust Storms ◽  
Observation Data ◽  
Surface Dust ◽  
Dust Dispersion ◽  
Meteorological Problems

Introduction: Many countries encounter dust storms phenomenon that is one of the meteorological problems leading to many disturbances. Materials and methods: Although the dust storm is historically recorded as an old event in some provinces of Iran, but it becomes a new event in some parts such as Ilam province. Results: After statistical investigation of dust storms in Ilam province, the dust storm from 3td to 6th July 2016 are studied. The source of this dust storm was the eastern areas of Syria and central Iraq base on the satellite images, the outputs of HYSPLIT and WRF-Chem models. Conclusion: Model outputs in intensity of surface dust concentration of MACC-ECMWF, NASA-GEOS, NCEP-NGAC, NMMB-BSC, and BSCDREAM8b models are compared to the observation data in Ilam city and results show that NASA-GEOS model has better performance. In display of dust dispersion on Iran, the middle of all models is more compatible with reality.

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