Results 171 to 180 of about 11,493 (223)
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Potential Vorticity Anomalies Associated with Squall Lines
Monthly Weather Review, 1991Abstract This study involves observations and model simulations of potential vorticity anomalies in the wake of midlatitude squall lines. Using data from the Oklahoma–Kansas PRE-STORM experiment, we analyze potential vorticity fields near two squall lines—one with and one without a trailing stratiform region. From this observational analysis we suggest
Rolf F. A. Hertenstein +1 more
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Squall-Line Intensification via Hydrometeor Recirculation
Journal of the Atmospheric Sciences, 2013Abstract Many studies have demonstrated the intimate connection between microphysics and deep moist convection, especially for squall lines via cold pool pathways. The present study examines four numerically simulated idealized squall lines using the Regional Atmospheric Modeling System (RAMS) and includes a control simulation that uses ...
Susan C. van den Heever +1 more
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A simplified squall-line model revisited
Quarterly Journal of the Royal Meteorological Society, 2000AbstractWe revisit the parametrized moisture model of Garner and Thorpe and show it does indeed support realistic multicellular behaviour when an adequate (and commonly available) amount of instability is present in the initial environment. We also consider the dramatic impact that the simplified model's storms have on their upstream environments, and ...
ROBERT G FOVELL, PEI-HUA TAN
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A midlatitude squall line in France
Atmospheric Research, 1990Abstract The kinematic structure of the convective part of a midlatitude squall line observed on 20 June 1984, is investigated by dual-Doppler radar analysis. This squall line moved eastward through the observing network of the Landes-Fronts 84 experiment in the southwest of France.
Michel Chong, Geneviève Jaubert
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Squall line sensitivity in LES simulations
2022<p>Upper tropospheric (UT) divergence is potentially an important mediator between convective scale error growth and advective/non-linear large scale error growth at jet stream scales (Baumgart et al. 2019). To investigate possible mechanistic links of error growth from small convective scales to the synoptic scales, but also to gain ...
Edward Groot, Holger Tost
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Bulletin of the American Meteorological Society, 1952
Squall lines are among the most severe but least understood weather phenomena. They are difficult to identify on the usual synoptic charts, and there has been some confusion concerning the definition of the terms “squall line” and “instability line.” The primary purpose of this paper is to show that squall lines can be defined and identified by the ...
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Squall lines are among the most severe but least understood weather phenomena. They are difficult to identify on the usual synoptic charts, and there has been some confusion concerning the definition of the terms “squall line” and “instability line.” The primary purpose of this paper is to show that squall lines can be defined and identified by the ...
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The Journal of the Royal Aeronautical Society, 1927
The subject of “Line-squalls” is one which has not been entirely neglected in the proceedings of this Society, but it has not hitherto been treated in any degree of detail. Sir Napier Shaw, in a lecture delivered on January 7th, 1914, on the subject of “Wind Gusts and the Structure of Aerial Disturbances,” briefly cited the line-squall as a phenomenon ...
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The subject of “Line-squalls” is one which has not been entirely neglected in the proceedings of this Society, but it has not hitherto been treated in any degree of detail. Sir Napier Shaw, in a lecture delivered on January 7th, 1914, on the subject of “Wind Gusts and the Structure of Aerial Disturbances,” briefly cited the line-squall as a phenomenon ...
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Bulletin of the American Meteorological Society, 1955
Are the outer precipitation bands of hurricanes and typhoons important phenomena? In suggesting that the answer to this question is “yes” several features of these bands are described or postulated. Methods of estimating the severity of attendant weather conditions by radar observation are offered.
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Are the outer precipitation bands of hurricanes and typhoons important phenomena? In suggesting that the answer to this question is “yes” several features of these bands are described or postulated. Methods of estimating the severity of attendant weather conditions by radar observation are offered.
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Quarterly Journal of the Royal Meteorological Society, 1977
AbstractA study of convection as portrayed by Oceanographer radar during phase III of GATE reveals four occasions on which an organized line of convection moved with a speed close to or greater than the wind speed at any level. They are shown to resemble closely the analytical model and numerical simulation of tropical line squalls developed by ...
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AbstractA study of convection as portrayed by Oceanographer radar during phase III of GATE reveals four occasions on which an organized line of convection moved with a speed close to or greater than the wind speed at any level. They are shown to resemble closely the analytical model and numerical simulation of tropical line squalls developed by ...
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Balanced Atmospheric Response to Squall Lines
Journal of the Atmospheric Sciences, 1989Abstract When a Squall line propagates through the atmosphere, it not only excite transient gravity–inertia wave motion but also produces more permanent modifications to the large-scale balanced flow. Here we calculate this balanced response using the is isentropic/geostrophic coordinate version of semigeostrophic theory.
Wayne H. Schubert +2 more
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