Assistance Needed for Extracting Swell and Wind Components from Model Files

[CHARANJULURI]

Dear WW3 Community,

I am writing to you as Charan Kumar, with a small request that I hope you can assist me with. I am currently in need of extracting the swell and wind components individually from the model list of files mentioned in the name list. Unfortunately, I have been unable to locate the variables required for this task. Therefore, I kindly request your guidance on how to obtain these variables.

Thank you for your attention to this matter.

Yours faithfully, J Charan Kumar.

[DarwinWW3]

Do you mean on the spectra output? If yes look on this https://wavespectra.readthedocs.io/en/latest/quickstart.html Or do you is it on the wave field output?

[mickaelaccensi]

if it's wave partitions from field output, you just have to activate the requested output parameter which are described in ww3_shel.nml in section 4

!        4                          Spectral Partition Parameters
!   -------------------------------------------------
!  T  T  4     1   PHS        PHS   Partitioned wave heights.
!  T  T  4     2   PTP        PTP   Partitioned peak period.
!  T  T  4     3   PLP        PLP   Partitioned peak wave length.
!  T  T  4     4   PDIR       PDIR  Partitioned mean direction.
!  T  T  4     5   PSI        PSPR  Partitioned mean directional spread.
!  T  T  4     6   PWS        PWS   Partitioned wind sea fraction.
!  T  T  4     7   PDP        PDP   Peak wave direction of partition.
!  T  T  4     8   PQP        PQP   Goda peakdedness parameter of partition.
!  T  T  4     9   PPE        PPE   JONSWAP peak enhancement factor of partition.
!  T  T  4    10   PGW        PGW   Gaussian frequency width of partition.
!  T  T  4    11   PSW        PSW   Spectral width of partition.
!  T  T  4    12   PTM1       PTM10 Mean wave period (m-1,0) of partition.
!  T  T  4    13   PT1        PT01  Mean wave period (m0,1) of partition.
!  T  T  4    14   PT2        PT02  Mean wave period (m0,2) of partition.
!  T  T  4    15   PEP        PEP   Peak spectral density of partition.
!  T  T  4    16   PWST       TWS   Total wind sea fraction.
!  T  T  4    17   PNR        PNR   Number of partitions.

[FatemehAmeri]

Hi Mickael,

Thanks for your reply. I'm working with ww3_shel.input. Should I use this file for the setup, or switch to ww3_shel.nml?

Thanks again!

Best,

On Mon, Aug 26, 2024 at 12:43 PM Mickael Accensi @.***> wrote:

if it's wave partitions from field output, you just have to activate the requested output parameter which are described in ww3_shel.nml in section 4

! 4 Spectral Partition Parameters ! ------------------------------------------------- ! T T 4 1 PHS PHS Partitioned wave heights. ! T T 4 2 PTP PTP Partitioned peak period. ! T T 4 3 PLP PLP Partitioned peak wave length. ! T T 4 4 PDIR PDIR Partitioned mean direction. ! T T 4 5 PSI PSPR Partitioned mean directional spread. ! T T 4 6 PWS PWS Partitioned wind sea fraction. ! T T 4 7 PDP PDP Peak wave direction of partition. ! T T 4 8 PQP PQP Goda peakdedness parameter of partition. ! T T 4 9 PPE PPE JONSWAP peak enhancement factor of partition. ! T T 4 10 PGW PGW Gaussian frequency width of partition. ! T T 4 11 PSW PSW Spectral width of partition. ! T T 4 12 PTM1 PTM10 Mean wave period (m-1,0) of partition. ! T T 4 13 PT1 PT01 Mean wave period (m0,1) of partition. ! T T 4 14 PT2 PT02 Mean wave period (m0,2) of partition. ! T T 4 15 PEP PEP Peak spectral density of partition. ! T T 4 16 PWST TWS Total wind sea fraction. ! T T 4 17 PNR PNR Number of partitions.

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Yours sincerely

Fatemeh Ameri

MSc in Physical Oceanography

Institute of Geophysics University of Tehran

Cell: (+98) 916 3188725

Email: @.***

[mickaelaccensi]

you can also use those parameters with ww3_shel.inp nml files are more convenient than inp files to configure WW3, so I recommend you to use .nml