ATM 418: Dynamic Meteorology III
Instructor: Prof. Ryan Torn (442.4560)
 
Course Objective: This course uses the governing equations of the atmosphere to understand mesoscale phenomena,
including fronts, flow over topography, convection, and the boundary layer.
 
Prerequisites: ATM 317, 320
 
Class meets: Tues./Thurs. 9:00-10:20 in ETEC 482
 
Syllabus
 
Final: Monday 11 December 10:30-12:30

 
Assignments

 
Links

Gap Flows WPC Surface Analysis, Strait of Juan De Fuca: Easterly Synoptic Setup, Observations (Colle and Mass 2020), Marine Push (Mass et al. 1986) Tehuenepec Gap: Schematic (Lugo Rios 2021), Horizonal Wind, Cross Section (Steenburgh et al. 1998) Island Wakes: Example, Hawaii Obs., Schematic (Smith and Grubicik 1993),

Planetary Boundary Layer Turbulence Example, Sahara Skewt, Arctic Skewt, Wind Time Series, Mass Field Time Series

Symmetric Instability Inertial Stability, Gravitational Instability, Inertial Instability, Symmetric Instability, Banding Example (M&R), Schematic (Novak et al. 2010),

Convective Precipitation Extremes Flash Flood Examples (Russ Schumacher), Precipitation Extremes, Precipitation Types (Schumacher and Johnson (2005), Precipitation Locations (Schumacher and Johnson (2006), Composite Schematic (Peters and Schumacher 2014), TL/AS Schematic (Peters and Schumacher 2014), Backbuilding Schematic (Schumacher and Johnson (2009)

Low-Level Jet Timeseries of Wind

Dry Line Soil Moisture Climatology (CPC), Green Vegetation Fraction (NASA/GSFC), Sensible Heat Climatology, (ERA-40 Atlas), Schematic (Bluestein 1993), Example, Soundings (Ziegler and Rasmussen 1998)

Sea Breeze: Radar Example

Lake Effect: Lake Effect, Map of Snowfall (Eichenlaub 1979), Cross Section (Lenschow 1973), Soundings, 17 November 2014 Buffalo Loop, Surface Obs., Surface Friction (Steenburgh and Campbell 2017)

Lapse Rate Tendency: Vertical Advection, Differential Advection, Stretching, Differential Diabatic Heating, 850 hPa Map, 500 hPa Map

Tornadoes: Photo/Radar Example (Wakimoto et al. 2018), Radar Example (Kurdzo et al. 2015), Climatology (Brooks et al. 2003), Supercell Genesis (M&R), Environment (Craven and Brooks 2004), Waterspout Genesis (Lee and Wilhelmson 1997), Model (Lee and Wilhelmson 1997), Multiple Vort (Wurman and Kosiba 2013)

Supercells: Supercell Diagram (Lee Grenci), Radar Image, Mesocyclone (Herb Stein), Trajectories (Lemon and Doswell 1979), Vorticity and Updraft, Splitting, Motion (Klemp 1987)

Mesoscale Convective Vortex: Radar Images (M&R), MPEX Example, Diabatic Heating Rates (Schumacher et al. 2004)

Multi-Cell Convection: Gust Front Example, Multiple Cell Schematic (Doswell 1985), RKW Schematic (Rotunno et al. 1988), MCS Evolution (Weisman 1993), MCS Schematic (Houze et al 1989), Horizonal Squall Line (Johnson and Hamilton 1988), Bow Echo Example, Cross section (Davis et al. 2004)

Isolated Convection: Convectively Unstable Sounding, Theta-E Profile, Convective Bubble (Textbook), Cumulus Cloud (UCAR Image), Downdraft (Jerry Ferguson)

Orographic Precipitation: Precip. Climatology (PRISM), Maui Climatology (PRISM), Rain Shadow, Types (Houze 2012), Barrier Effect (Neiman et al. 2002), Seeder-Feeder (Houze Medina 2005), Alternative (Zagrodnik et al. 2018), Cyclone Model (Houze 2014), Cyclone Precip. (Medina et al. 2007),

Slope Circulations: Daytime Slope Circulation (M&R), Night Slope Circulation (M&R), Slope Circulation Evolution (Banta 1990),

Topographic Blocking: Cold Air Damming, Cross section (Bell and Bosart 1988), West Coast Example Satellite (Mass and Albright 1987), Blocking Example, NCAR Observations, Tehuantepec Gap Flow, Puget Sound CZ (J. Braun, CIRA), Fraser River Outflow (Cliff Mass), Barrier Jet (Loescher et al 2006), Barrier Jet (Kingsmill et al 2013), Barrier Jet Climo (Smith 2019)

Downslope Winds: Downslope Wind Trace (Durran 1986), Temp. Data, Wind Data (Klemp and Lilly 1975), Water over a Rock, Shallow Water Theory (Durran 1990), Interface variation, Height variation, Real Simulation (Durran 1986), Skew-T of Real case, Santa Ana Example (Cao and Fovell 2016), Maui Example (Cliff Mass)

Waves over Isolated Ridge: Wave Solutions (Durran 1990) Linear Propagating, Linear Trapped, Non-Linear Propagating, Non-Linear Trapped (Durran 1986, 2003)

Waves over Continuous Ridges: Wave Solutions (Durran 1990)

Mountain Examples: Mountain Schematic (UNIDATA), Mountain Wave Animation, Clouds, Mountain Waves in Dust (Dale Durran), Downslope Wind Trace (Durran 1986),

Introduction: Scales of Motion, Mountain Schematic, Clouds, Cold Air Damming (Bell and Bosart 1988), Bow Echo, Supercell (Lee Grenci), Lake Effect

Gravity Waves in TCs

Tom Galarneau QG Diagnostics

High Resolution Visible Image

NCAR RAP Weather Page

GOES East Satellite

850 hPa Forecast

RMcTC Diagnostics