Results 91 to 100 of about 534 (178)

Investigating the Relationship between Lightning and Mesocyclonic Rotation in Supercell Thunderstorms

open access: yes, 2017
Relationships between lightning and lightning jumps and physical updraft properties are frequently observed and generally understood. However, a more intensive characterization of how lightning relates to traditional radar-based metrics of storm ...
Phillip M. Bitzer   +3 more
core   +1 more source

Relationships between thunderstorm mesoscale circulation and tornadogenesis. [PDF]

open access: yes, 1983
The data show that vertical vorticity production in tornadic storms begins at the very roots of the updraft as horizontal vorticity associated with low level environmental air is tilted toward the vertical. The vertical vorticity produced is amplified by
Brandes, Edward A.,
core  

Mesocyclone activity over the North-East Atlantic. Part 1: vortex distribution and variability

open access: yes, 1999
Polar mesocyclones are subsynoptic-scale low pressure systems that form over high-latitude oceans in a cold air mass. It is known that these systems can be very vigorous but only relatively short time periods have been studied in the past to estimate ...
Bigg, Grant R.   +2 more
core   +1 more source

Simulation of the Mesocyclonic Activity in the Ross Sea, Antarctica

open access: yesMonthly Weather Review, 1995
The mesocyclonic activity in the southwestern Ross Sea is examined, with emphasis on its forcing by katabatic winds. The three-dimensional version of the meso-gamma-scale primitive equation model Modele Atmospherique Regional is used in which a representation of cloud microphysical processes has been introduced.
openaire   +2 more sources

The Effects of Low-Level Wind Shear Orientation, Depth, and Magnitude on Low-Level Rotation in Simulated Supercell Thunderstorms [PDF]

open access: yes, 2016
Supercell thunderstorms simulated using the numerical model CM1 are used to analyze the effects of low-level vertical wind shear on near-ground rotation in the storm.
Guarriello, Felicia Rose
core  

The Regulation of Tornado Intensity by Updraft Width

open access: yes, 2017
Strong to violent tornadoes cause a disproportionate amount of damage, in part because the width and length of a tornado damage track are correlated to tornado intensity (as now estimated through enhanced Fujita scale ratings).
Stephen W. Nesbitt   +2 more
core   +1 more source

Impact of a Diagnostic Pressure Equation Constraint on Tornadic Supercell Thunderstorm Forecasts Initialized Using 3DVAR Radar Data Assimilation

open access: yesAdvances in Meteorology, 2013
A diagnostic pressure equation constraint has been incorporated into a storm-scale three-dimensional variational (3DVAR) data assimilation system. This diagnostic pressure equation constraint (DPEC) is aimed to improve dynamic consistency among different
Guoqing Ge, Jidong Gao, Ming Xue
doaj   +1 more source

Supercell tornadoes are much stronger and wider than damage-based ratings indicate. [PDF]

open access: yesProc Natl Acad Sci U S A, 2021
Wurman J, Kosiba K, White T, Robinson P.
europepmc   +1 more source

Mesocyclone and RFD evolution in simulated supercell storms with varying wind profiles

open access: yes, 2010
In the literature, frequent attempts have been made to understand supercell mesocyclone evolution via observations and modeling. Some such modeling attempts have examined changes produced by varying environmental characteristics, including the wind ...
Straka, Jerry M.   +2 more
core  

The 16 April 2011 EF3 Tornado in Greene County Eastern North Carolina

open access: yes, 2012
This paper presents a case study of an EF3 tornado that adversely impacted Greene and Pitt Counties in eastern North Carolina on 16 April 2011. This was one of the most damaging and longest-lived of the multiple tornados that occurred across central and ...
Rickenbach, Thomas M.   +1 more
core   +2 more sources

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