Paul Markowski
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View article: Two archetypes of tornadic quasi‐linear convective systems in the United Kingdom: Relevance of horizontal shearing instability to vortexgenesis and maintenance
Two archetypes of tornadic quasi‐linear convective systems in the United Kingdom: Relevance of horizontal shearing instability to vortexgenesis and maintenance Open
High‐resolution mesoscale model simulations of two archetypal quasi‐linear convective systems producing outbreaks of three or more tornadoes in the United Kingdom are performed to determine vortexgenesis mechanisms. Type 1 events are assoc…
View article: Supercell Tornadogenesis: Recent Progress in Our State of Understanding
Supercell Tornadogenesis: Recent Progress in Our State of Understanding Open
Over the last decade, supercell simulations and observations with ever-increasing resolution have provided new insights into the vortex-scale processes of tornado formation. This article incorporates these and other recent findings into th…
View article: Two Archetypes of Tornadic Quasilinear Convective Systems in the United Kingdom: Vortex Genesis and Maintenance
Two Archetypes of Tornadic Quasilinear Convective Systems in the United Kingdom: Vortex Genesis and Maintenance Open
<p class="p1">Nine tornado outbreaks (days with three or more tornadoes) have occurred in the United Kingdom from quasi-linear convective systems in the 16 years between 2004 and 2019. Of the nine outbreaks, eight can be cl…
View article: Characteristics of the Wind Field in Three Nontornadic Low-Level Mesocyclones Observed by the Doppler On Wheels Radars
Characteristics of the Wind Field in Three Nontornadic Low-Level Mesocyclones Observed by the Doppler On Wheels Radars Open
The three-dimensional wind fields within three nontornadic supercell thunderstorms are retrieved from dual-Doppler radar observations obtained by a pair of Doppler on Wheels (DOW) radars. The observations focus on the low-level mesocyclone…
View article: Observational and Idealized Numerical Examination of Low-level Counter-rotating Vortices in the Rear Flank of Supercells
Observational and Idealized Numerical Examination of Low-level Counter-rotating Vortices in the Rear Flank of Supercells Open
Observations are reviewed that show that the dominant kinematic elements of the supercell rear flank are a downdraft trailing an adjacent updraft, a gust front, and counter-rotating vortices embedded in the gust front convergence zone. The…
View article: Simultaneous Dual-Doppler and Mobile Mesonet Observations of Streamwise Vorticity Currents in Three Supercells
Simultaneous Dual-Doppler and Mobile Mesonet Observations of Streamwise Vorticity Currents in Three Supercells Open
Recent high-resolution numerical simulations of supercells have identified a feature referred to as the streamwise vorticity current (SVC). Some have presumed the SVC to play a role in tornadogenesis and maintenance, though observations of…
View article: Snowflake Selfies: Research by Students with Smartphones
Snowflake Selfies: Research by Students with Smartphones Open
View article: An Artificially Intelligent System for the Automated Issuance of Tornado Warnings in Simulated Convective Storms
An Artificially Intelligent System for the Automated Issuance of Tornado Warnings in Simulated Convective Storms Open
The utility of employing artificial intelligence (AI) to issue tornado warnings is explored using an ensemble of 128 idealized simulations. Over 700 tornadoes develop within the ensemble of simulations, varying in duration, length, and ass…
View article: The Orinoco Low-Level Jet: An Investigation of its Mechanisms of Formation Using the WRF Model
The Orinoco Low-Level Jet: An Investigation of its Mechanisms of Formation Using the WRF Model Open
The Orinoco low-level jet (OLLJ) is characterized using finer horizontal, vertical, and temporal resolution than possible in previous studies via dynamical downscaling. The investigation relies on a 5-month-long simulation (November 2013-M…
View article: What is the Intrinsic Predictability of Tornadic Supercell Thunderstorms?
What is the Intrinsic Predictability of Tornadic Supercell Thunderstorms? Open
A 25-member ensemble of relatively high-resolution (75-m horizontal grid spacing) numerical simulations of tornadic supercell storms is used to obtain insight on their intrinsic predictability. The storm environments contain large and dire…
View article: Snowflake Selfies: A Low-Cost, High-Impact Approach toward Student Engagement in Scientific Research (with Their Smartphones)
Snowflake Selfies: A Low-Cost, High-Impact Approach toward Student Engagement in Scientific Research (with Their Smartphones) Open
An engaged scholarship project called “Snowflake Selfies” was developed and implemented in an upper-level undergraduate course at The Pennsylvania State University (Penn State). During the project, students conducted research on snow using…
View article: Data and analysis code for the 26 May 2010 supercell intercepted by VORTEX2 near Prospect Valley, Colorado
Data and analysis code for the 26 May 2010 supercell intercepted by VORTEX2 near Prospect Valley, Colorado Open
These data and computer codes contained in this zip file were used in an analysis of a supercell on 26 May 2010 near Prospect Valley, Colorado, that was intercepted by the Second Verification of the Origins of Rotation in Tornadoes Experim…
View article: Processes Preventing the Development of a Significant Tornado in a Colorado Supercell on 26 May 2010
Processes Preventing the Development of a Significant Tornado in a Colorado Supercell on 26 May 2010 Open
A supercell produced a nearly tornadic vortex during an intercept by the Second Verification of the Origins of Rotation in Tornadoes Experiment on 26 May 2010. Using observations from two mobile radars performing dual-Doppler scans, a five…
View article: Observations of Near-Surface Vertical Wind Profiles and Vertical Momentum Fluxes from VORTEX-SE 2017: Comparisons to Monin–Obukhov Similarity Theory
Observations of Near-Surface Vertical Wind Profiles and Vertical Momentum Fluxes from VORTEX-SE 2017: Comparisons to Monin–Obukhov Similarity Theory Open
Observations of near-surface vertical wind profiles and vertical momentum fluxes obtained from a Doppler lidar and instrumented towers deployed during VORTEX-SE in the spring of 2017 are analyzed. In particular, departures from the predict…
View article: Processes Associated with Convection Initiation in the North American Mesoscale Forecast System, Version 3 (NAMv3)
Processes Associated with Convection Initiation in the North American Mesoscale Forecast System, Version 3 (NAMv3) Open
In support of the Next Generation Global Prediction System (NGGPS) project, processes leading to convection initiation in the North American Mesoscale Forecast System, version 3 (NAMv3) are explored. Two severe weather outbreaks—occurring …
View article: Comments on “The Regulation of Tornado Intensity by Updraft Width”
Comments on “The Regulation of Tornado Intensity by Updraft Width” Open
© 2018 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).Corresponding author: Brice Coffer, becoffer@nc…
View article: The influence of sea- and land-breeze circulations on the diurnal variability in precipitation over a tropical island
The influence of sea- and land-breeze circulations on the diurnal variability in precipitation over a tropical island Open
This study examines the diurnal variation in precipitation over Hainan Island in the South China Sea using gauge observations from 1951 to 2012 and Climate Prediction Center MORPHing technique (CMORPH) satellite estimates from 2006 to 2015…
View article: Severe Convective Storm Environments in Turkey
Severe Convective Storm Environments in Turkey Open
Severe convective storms occasionally result in loss of life and property in Turkey, a country not known for its severe convective weather. However, relatively little is known about the characteristics of Turkish severe weather environment…
View article: The influence of sea- and land-breeze circulations on the diurnal variability of precipitation over a tropical island
The influence of sea- and land-breeze circulations on the diurnal variability of precipitation over a tropical island Open
This study examines the diurnal variation of precipitation over Hainan Island in the South China Sea using gauge observations from 1950 to 2010 and CMORPH satellite estimates from 2006 to 2015, as well as numerical simulations. Precipitati…
View article: Severe Hail Climatology of Turkey
Severe Hail Climatology of Turkey Open
A climatology of severe hail (diameter equal to or exceeding approximately 1.5 cm) for Turkey is constructed from official severe weather reports from meteorological stations, newspaper archives, and Internet sources. The dataset consists …