Results 71 to 80 of about 123 (102)

Downslope Windstorms in a Sheared Environmental Flow Having Density Decrease with Height

Journal of the Meteorological Society of Japan. Ser. II, 1994
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Observations and modelling of downslope windstorm in Novorossiysk

Dynamics of Atmospheres and Oceans, 2018
Abstract We present a comprehensive study of the three-dimensional structure of the Novorossiysk bora, a severe downslope windstorm on the north-eastern coast of the Black Sea. The analysis is based on observational data obtained from the Russian Hydrometeorological Service, automatic weather stations, sodar system, microwave temperature profiler and
Irina Repina, Denis E Sergeev, VÍCTOR Stepanenko   +2 more
exaly   +2 more sources

Impact of land surface roughness on downslope windstorm modelling in the Arctic

Dynamics of Atmospheres and Oceans, 2021
Abstract The article considers the reasons for the underestimation of the wind speed by the WRF-ARW model when simulating downslope windstorms in the Russian Arctic. Simulation results for the Tiksi windstorm, for which sensitivity tests were carried out, appeared to be weakly dependent on the initial and boundary conditions, topography resolution ...
Anna Shestakova
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Winter heat waves characteristics associated with downslope windstorm in south Brazil

International Journal of Climatology, 2023
AbstractThe air temperature anomaly was analysed in 16 consecutive winters from 2004 to 2019 in southern Brazil using reanalysis data and hourly atmospheric observations. In this study, 13 heat wave (HW) episodes were identified using the percentile methodology.
Nicolle Cordero Simões Dos Reis, Dirceu Herdies, Gervasio Annes Degrazia   +2 more
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A Severe Downslope Windstorm and Aircraft Turbulence Event Induced by a Mountain Wave

Journals of the Atmospheric Sciences, 1978
Abstract A detailed analysis is presented of the large-scale, mesoscale and turbulent-scale features of a major downslope windstorm event in central Colorado on 11 January 1972. The storm is found to be associated with a moderate amplitude baroclinic disturbance moving across the northwestern United States within an intense zonal current.
D K Lilly
exaly   +2 more sources

An extreme clear air turbulence incidence associated with a strong downslope windstorm

24th Aerospace Sciences Meeting, 1986
The meteorological conditions present during an occurrence of clear-air turbulence (CAT) associated with the presence of a mountain wave are documented. The incident caused severe vertical accelerations of two passenger aircraft travelling at 33,000 ft altitude.
R Bach
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Gravity waves induced by a downslope windstorm in modest terrain: a case study

Quarterly Journal of the Royal Meteorological Society
AbstractThis study examines a typical episode of a downslope windstorm known as “Vento Norte” (VNOR; “North Wind” in Portuguese) in the state of Rio Grande do Sul, Brazil. The temporal and spatial evolution of the VNOR episode is analyzed by means of sonic anemometer data collected at 10 vertical levels on a 30 m tower, two automated weather stations ...
Michel Stefanello, Cinara Ewerling Da Rosa, Nascimento E L   +2 more
exaly   +2 more sources

Unexpected High Winds in Northern New Jersey: A Downslope Windstorm in Modest Topography

Weather and Forecasting, 2011
Abstract This study presents the first evidence for the occurrence of a downslope windstorm in New Jersey. During the early morning hours of 4 January 2009, an unanticipated strong wind event was observed. Despite a zone forecast calling for winds less than 4 m s−1 issued 4 h prior to the event, winds up to 23 m s−1 were reported at High
Steven Decker
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Pulsating Downslope Windstorms

Journal of the Atmospheric Sciences, 1989
Abstract The flow configurations that obtain in several severe downslope windstorm events generated over isolated topography are studied using a two-dimensional nonlinear anelastic model. A new high resolution simulation of the 11 January 1972 windstorm in Boulder, Colorado, constructed using a very large model domain, is shown to qualitatively ...
J. F. Scinocca, W. R. Peltier
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The bimodal downslope windstorms at Kvísker

Meteorology and Atmospheric Physics, 2010
Downslope windstorms at Kvisker in Southeast Iceland are explored using a mesoscale model, observations and numerical analysis of the atmosphere. Two different types of gravity-wave induced windstorms are identified. At the surface, their main difference is in the horizontal extent of the lee-side accelerated flow.
Hálfdán Ágústsson, Haraldur Ólafsson   +1 more
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