an overview of the theory behind the dionysos equations n.
Download
Skip this Video
Download Presentation
An overview of the theory behind the Dionysos equations

Loading in 2 Seconds...

play fullscreen
1 / 11

An overview of the theory behind the Dionysos equations - PowerPoint PPT Presentation


  • 84 Views
  • Uploaded on

Université du Québec à Montréal. An overview of the theory behind the Dionysos equations. Peter Zwack Jean-François Caron Christian Pagé. Department of Earth and Atmospheric Sciences www.dionysos.uqam.ca. Standard 50 hPa Gridded GEM Model (100km) Simulation Fields at 3 Hour Intervals.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'An overview of the theory behind the Dionysos equations' - curt


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
an overview of the theory behind the dionysos equations

Université du Québec à Montréal

An overview of the theory behind the Dionysos equations

Peter Zwack

Jean-François Caron

Christian Pagé

Department of Earth and Atmospheric Sciences

www.dionysos.uqam.ca

slide2

Standard 50 hPa Gridded GEM Model (100km) Simulation Fields at 3 Hour Intervals

  • Vorticity Advection
  • Friction*
  • Orography*
  • Laplacian Temperature Advection
  • Laplacian Latent Heating*
  • Laplacian Sensible Heating*

Calculate

Forcings

Output

* Parameterized Forcing

Input

Contribution of Individual Forcings Piecewise from Any Particular Part of the Atmosphere To

Balance Diagnostics - DIONYSOS

  • Surface Pressure
  • Geopotential
  • Temperature
  • Horizontal Wind
  • Latent Heating Profile*
  • Surface Sensible Heat Flux
  • Orography
  • *Currently deduced using model vertical motion and precipitation
  • Vertical Motion
  • Vorticity Tendencies
  • Geostrophic Vorticity Tendencies
  • Divergence and divergent wind
  • Temperature Tendencies
  • Height and Pressure Tendencies
  • Vorticity and Temperature Advections Tendencies
omega equation

F

F

F

F

F

Forcing

Ageostrophic vorticity tendency term

Included using an iterative process using non-linear balance equation

Only Assumption : Hydrostatic

Omega Equation

Generalized Omega Equation (Räisänen, MWR 1995)

Forcing

slide4

Model Input - 3 hours intervals

Diagnostics Output Times

Diagnostic Sequence

diagnostic sequence

Continuity Equation

Thermodynamic Equation

  • Vorticity Advection
  • Friction*
  • Orography*
  • Lap. Temperature Advection
  • Lap. Latent Heating*
  • Lap. Sensible Heat Flux*

Vorticity Equation

Dynamic Forcings

Iteration to include the AG tendency as a correction term

Thermodynamic Forcings

* Parameterized Forcing

Diagnostic Sequence

Sequence for each individual forcing

Model Input

After all computations, all fields are filtered (<6Dx) to remove numerically generated noise

Omega

Equation

Forcing

Non Linear Balance Equation

Geostrophic Definition

diagnostic vorticity tendencies
Diagnostic - Vorticity Tendencies

Diagnostics of Vorticity Tendencies

Full Vorticity Equation - No Assumptions

methodology vorticity tendencies

Laplacian of sensible heating

Methodology - Vorticity Tendencies

Vorticity Tendency - Thermodynamic forcing

Laplacian of Sensible Heating

Diagnostics of vorticity tendencies

methodology vorticity tendencies1

Vorticity advection

Methodology - Vorticity Tendencies

Vorticity Tendency - Dynamic forcing

Vorticity Advection

Diagnostics of vorticity tendencies

methodology temperature tendencies
Methodology - Temperature Tendencies

Thermodyamic Equation

Diagnostics of temperature tendencies

methodology temperature tendencies1

Laplacian of latent heat release

Methodology - Temperature Tendencies

Contribution of Latent Heat Released

(Example of thermodynamic forcing)

Diagnostics of temperature tendencies

methodology temperature tendencies2

Friction

Methodology - Temperature Tendencies

Contribution of Friction

(Example of Dynamic Forcing)

Diagnostics of temperature tendencies