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Example Simulations. - PowerPoint PPT Presentation
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1PC-HYSPLIT WORKSHOP
Example SimulationsExample Simulations
Presented on the following slides are several basic trajectory and dispersion simulations and meteorological data display examples that you can run prior to viewing section 3 and 4 of the presentation. Sections 3 and 4 will delve more deeply into the inner workings of the model and advanced settings of the GUI.
The first slide of each example will present the problem to be answered, the next few slides will show the GUI inputs, and the last slide will show the resulting map.
It is recommended to click on the Reset button of the main HYSPLIT menu before proceeding in order to clear out any old cases in the working directory.
Note: These runs were produced using HYSPLIT version 4.8 (released February 2008). Slight differences are possible with older/newer versions of the model.
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Example 1: Multiple Trajectories
Example 1: Multiple Trajectories
Source Location: Dayton, Ohio (39.90N, 84.20W) @ 10 and 750 meters AGL
Date/Time: December 19, 2005 @ 1800 UTC
Duration: Forward 48 hours
Meteorology: NAM 12 km
Display: Zoom set to 80%
Endpoint labels every 6 hours
Vertical display coordinate set to Meters-agl
Optional Google Earth
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Example 1: InputsExample 1: Inputs
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Example 1: ResultsExample 1: Results
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Example 2: Back TrajectoryExample 2: Back Trajectory
Source Location: Nashville, TN (36.13N, 86.68W) @ 750 meters AGL
Date/Time: December 22, 2005 @ 1400 UTC
Duration: Backward 72 hours
Meteorology: GFS
Display: Zoom set to 80%
Endpoint labels every 12 hours
Vertical display coordinate set to Meters-agl
Optional Google Earth
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Example 2: InputsExample 2: Inputs
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Example 2: ResultsExample 2: Results
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Example 3: Simple Dispersion
Example 3: Simple Dispersion
Source Location: Phoenix. AZ (33.43N, 112.02W) @ 10 meters AGL
Source Duration: 1 unit/hr source emission for 2 hours
Date/Time: December 20, 2005 @ 1900 UTC
Duration: Forward, 12 hours
Output: 12-hour average concentration between the surface and 100 meters
Grid Spacing: 0.05 degrees latitude and longitude
Grid Span: 20.0 degrees latitude and longitude
Deposition: None
Meteorology: NAM 12 km
Display: Zoom set to 50%
Optional Google Earth
Example 3: InputsExample 3: Inputs
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Example 3: InputsExample 3: Inputs
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Example 3: InputsExample 3: Inputs
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Example 3: ResultsExample 3: Results
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Example 4: Simple Dispersion
Example 4: Simple Dispersion
Source Location: Phoenix. AZ (33.43N, 112.02W) @ 10 meters AGL
Source Duration: 1 unit/hr source emission for 2 hours
Date/Time: December 20, 2005 @ 1700 UTC
Duration: Forward, 6 hours
Output: 1-hour average concentration between the surface and 100 meters
Grid Spacing: 0.01 degrees latitude and longitude
Grid Span: 10.0 degrees latitude and longitude
Deposition: None
Meteorology: NAM 12 km
Display: Zoom set to 100%
Center plot over the source and add four 20 km rings
Add county map background (file countymap)
Fix exponential contours
Optional: Create animated gif image
Example 4: InputsExample 4: Inputs
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Example 4: InputsExample 4: Inputs
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Example 4: InputsExample 4: Inputs
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Example 4: ResultsExample 4: Results
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Example 5: MeteorologyExample 5: Meteorology
From the last case, investigate why the plume initially moved to the NW and then to the SE using HYSPLIT’s contour and profile program.
Source Location: Phoenix. AZ (33.43N, 112.02W)
Date/Time: December 20, 2005 between 1500-0000 UTC
Meteorology: NAM 12 km
Display: Show 10 meters wind vector maps
Profile output at source location from 1500-0000 UTC using the Polar coordinate system to show wind direction and speed. (This may take a few minutes to generate.)
Notes: The NAMF12 dataset begins with December 19, 2005 @ 1200 UTC and has data every 3 hours, which can bedetermined by running profile.
Example 5: Contour Inputs
Example 5: Contour Inputs
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Example 5: ResultsExample 5: Results
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Approximate location of source
Example 5: Profile Inputs
Example 5: Profile Inputs
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Example 5: ResultsExample 5: Results
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Wind Direction and Speed at 1000 hPa
Date/Time WDIR WSPD20/1500 114.2 1.420/1800 155.7 0.520/2100 288.2 1.521/0000 294.5 2.6