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__NOINDEX__
{{PBL Release}}
{{PBL Release}}


The ADCIRC wind coverage represents a storm, such as a tropical depression or hurricane. This information can be imported from NWS 8 and 19 files (fort.22 and fort.15 files [1]), and exported by SMS for use with ADCIRC. Running ADCIRC directly from SMS also works fine, and various model checks have been implemented to help users catch mistakes and avoid crossing ADCIRC's limitations.
The ADCIRC wind coverage represents a storm, such as a tropical depression or hurricane. This information can be imported from NWS 8 and 19 files (fort.22 and fort.15 files [1]), and exported by SMS for use with ADCIRC. Running ADCIRC directly from SMS also works fine, and various model checks have been implemented to help catch mistakes and avoid crossing ADCIRC's limitations.
To create a wind coverage, create a new coverage and select the coverage type Models | Wind | Holland/ PBL. Alternately, you can convert an existing coverage by right-clicking it and selecting Type | Models | Wind | Holland/ PBL
 
To create a wind coverage, create a new coverage and select the coverage type ''Models | Wind'' | '''Holland/ PBL'''. Alternately, convert an existing coverage by right-clicking it and selecting ''Type | Models | Wind ''| '''Holland/ PBL'''


==Coverage Attributes==
==Coverage Attributes==
To access the coverage attributes, right-click on the coverage and select "Properties...". The coverage attributes dialog contains several separate fields that apply to the entire hurricane, such as whether it is symmetric or asymmetric. The storm's symmetry in particular is important to set before editing node properties because it affects which fields are shown by default and regarded as required.
To access the coverage attributes, right-click on the coverage and select '''Properties...'''. The coverage attributes dialog contains several separate fields that apply to the entire hurricane, such as whether it is symmetric or asymmetric. The storm's symmetry in particular is important to set before editing node properties because it affects which fields are shown by default and regarded as required.
* Wind Model: Choose between symmetric and asymmetric definition of your storm. The wind model will determine which fields are displayed and which are hidden (by default) in the node attributes dialog.
* Wind Model: Choose between symmetric and asymmetric definition of the storm. The wind model will determine which fields are displayed and which are hidden (by default) in the node attributes dialog.
** Symmetric is the basic and default choice, and assumes a simple storm definition will suffice.
** Symmetric is the basic and default choice, and assumes a simple storm definition will suffice.
** Asymmetric gives you a lot more options for defining the storm's shape and orientation.
** Asymmetric gives a lot more options for defining the storm's shape and orientation.
** PBL (Planetary Boundary Layer) is discussed separately.
** PBL (Planetary Boundary Layer) is discussed separately.
* Basin and Subregion: For informational purposes, these define where in the world the storm is taking place.
* Basin and Subregion: For informational purposes, these define where in the world the storm is taking place.
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==Building a Storm Path==
==Building a Storm Path==
The storm path should be a single continuous line with no breaks or branches. Simply clicking out an arc is sufficient -- vertices will be converted to nodes once you enter the Node Attributes dialog.
The storm path should be a single continuous line with no breaks or branches. Simply clicking out an arc is sufficient—vertices will be converted to nodes once they have been entered in the ''Node Attributes'' dialog.


Do:
Do:
* Operate in Geographic Coordinates
* Operate in Geographic Coordinates
* Make a single path with no breaks
* Make a single path with no breaks
* Create the number of vertices/nodes that you have data for (you can adjust their positions manually with the nodes/vertices selected, or you can set their positions within the Node Attributes dialog)
* Create the number of vertices/nodes that there is data for (adjust their positions manually with the nodes/vertices selected, or set their positions within the ''Node Attributes'' dialog)


Don't:
Don't:
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* Create loops with the path
* Create loops with the path


{|
<gallery widths="300px" heights="240px" perrow="5">
|-valign="top"
File:Stormpath1.jpg|Good example of a storm path.
| [[File:Stormpath1.jpg|thumb|350 px|Good example of a storm path]]
File:Stormpath2.jpg|A good path can cross itself as long as it does not connect at the intersection.
| [[File:Stormpath2.jpg|thumb|350 px|A good path can cross itself as long as it does not connect at the intersection]]
File:Stormpath3.jpg|Path should not branch as in this picture.
|-valign="top"
File:Stormpath4.jpg|Path should never loop as shown.
| [[File:Stormpath3.jpg|thumb|350 px|Path should not branch as in this picture]]
File:Stormpath5.jpg|Only one path can exist. Multiple paths as shown are not allowed.
| [[File:Stormpath4.jpg|thumb|350 px|Path should never loop as shown]]
File:Stormpath6.jpg|Different portions of the path cannot converge on each other. The arrows for each section of the path should all point in the same direction for the whole length of the path.
|-valign="top"
</gallery>
| [[File:Stormpath5.jpg|thumb|350 px|Only one path can exist. Multiple paths as shown are not allowed.]]
[[Category:Gallery]]
| [[File:Stormpath6.jpg|thumb|350 px|Different portions of the path cannot converge on each other. The arrows for each section of the path should all point in the same direction for the whole length of the path.]]
|}
 
====Notes====
====Notes====
Consequently, the storm path and nodes information may be obtained in a hurdat file obtained on the NOAA website. Access website and save the Easy to Read version of the file. Extension for file must be saved as hurdat in order to open in SMS.
Consequently, the storm path and nodes information may be obtained in a hurdat file obtained on the NOAA website. Access website and save the Easy to Read version of the file. Extension for file must be saved as hurdat in order to open in SMS.


==Linking the Coverage to the ADCIRC Project==
==Linking the Coverage to the ADCIRC Project==
Once you've defined your storm path and all its data, it's time to link the project into ADCIRC. To do this, select the ADCIRC mesh and go to ADCIRC | Model Control.
Once having defined the storm path and all its data, it's time to link the project into ADCIRC. To do this, select the ADCIRC mesh and go to ''ADCIRC'' | '''Model Control'''.


Choose the Wind tab. Select either Dynamic Holland Model (NWS=8) or Asymmetric vortex, Holland gradient wind model (NWS=19). In the Wind File Options section, click Choose coverage... to select your coverage and link it in. The Options button will now open the Coverage Attributes dialog, allowing you to edit it quickly from this dialog.
Choose the ''Wind'' tab. Select either Dynamic Holland Model (NWS=8) or Asymmetric vortex, Holland gradient wind model (NWS=19). In the ''Wind File Options'' section, click '''Choose coverage...''' to select the coverage and link it in. The '''Options''' button will now open the ''Coverage Attributes'' dialog where the attributes for the coverage can be edited.


In the Timing tab be sure to set up the simulation start time and how long it runs. The wind coverage's time span should have the same start time and duration, or be longer so that it encompasses the simulation time span.
In the ''Timing'' tab be sure to set up the simulation start time and how long it runs. The wind coverage's time span should have the same start time and duration, or be longer so that it encompasses the simulation time span.


Also set up any other ADCIRC settings as needed. When finished, click OK, then go to File | Save ADCIRC, then ADCIRC | Run ADCIRC. The model check will alert you to any potential problems before ADCIRC runs.
Also set up any other ADCIRC settings as needed. When finished, click '''OK''', then go to ''File ''| '''Save ADCIRC''', then ''ADCIRC'' | '''Run ADCIRC'''. The model check will alert of any potential problems before ADCIRC runs.




{{Template:Navbox SMS}}
{{Template:Navbox SMS}}
[[Category:Holland\PBL|H]]
[[Category:ADCIRC]]
[[Category:Archived]]

Latest revision as of 14:11, 11 June 2019

The PBL engine is developed and maintained by Oceanweather Inc. Distribution of the model itself is controlled by OWI and is not available for sale through Aquaveo.


The ADCIRC wind coverage represents a storm, such as a tropical depression or hurricane. This information can be imported from NWS 8 and 19 files (fort.22 and fort.15 files [1]), and exported by SMS for use with ADCIRC. Running ADCIRC directly from SMS also works fine, and various model checks have been implemented to help catch mistakes and avoid crossing ADCIRC's limitations.

To create a wind coverage, create a new coverage and select the coverage type Models | Wind | Holland/ PBL. Alternately, convert an existing coverage by right-clicking it and selecting Type | Models | Wind | Holland/ PBL

Coverage Attributes

To access the coverage attributes, right-click on the coverage and select Properties.... The coverage attributes dialog contains several separate fields that apply to the entire hurricane, such as whether it is symmetric or asymmetric. The storm's symmetry in particular is important to set before editing node properties because it affects which fields are shown by default and regarded as required.

  • Wind Model: Choose between symmetric and asymmetric definition of the storm. The wind model will determine which fields are displayed and which are hidden (by default) in the node attributes dialog.
    • Symmetric is the basic and default choice, and assumes a simple storm definition will suffice.
    • Asymmetric gives a lot more options for defining the storm's shape and orientation.
    • PBL (Planetary Boundary Layer) is discussed separately.
  • Basin and Subregion: For informational purposes, these define where in the world the storm is taking place.
  • Annual cyclone number: Does not affect calculations, but is valuable for book keeping.

Building a Storm Path

The storm path should be a single continuous line with no breaks or branches. Simply clicking out an arc is sufficient—vertices will be converted to nodes once they have been entered in the Node Attributes dialog.

Do:

  • Operate in Geographic Coordinates
  • Make a single path with no breaks
  • Create the number of vertices/nodes that there is data for (adjust their positions manually with the nodes/vertices selected, or set their positions within the Node Attributes dialog)

Don't:

  • Create multiple paths in the same coverage
  • Split the path in multiple directions
  • Create loops with the path

Notes

Consequently, the storm path and nodes information may be obtained in a hurdat file obtained on the NOAA website. Access website and save the Easy to Read version of the file. Extension for file must be saved as hurdat in order to open in SMS.

Linking the Coverage to the ADCIRC Project

Once having defined the storm path and all its data, it's time to link the project into ADCIRC. To do this, select the ADCIRC mesh and go to ADCIRC | Model Control.

Choose the Wind tab. Select either Dynamic Holland Model (NWS=8) or Asymmetric vortex, Holland gradient wind model (NWS=19). In the Wind File Options section, click Choose coverage... to select the coverage and link it in. The Options button will now open the Coverage Attributes dialog where the attributes for the coverage can be edited.

In the Timing tab be sure to set up the simulation start time and how long it runs. The wind coverage's time span should have the same start time and duration, or be longer so that it encompasses the simulation time span.

Also set up any other ADCIRC settings as needed. When finished, click OK, then go to File | Save ADCIRC, then ADCIRC | Run ADCIRC. The model check will alert of any potential problems before ADCIRC runs.