Wind forcing from satellite data

System Modules TOMAWAC
1

Hello [name removed]!

I am working with a wave model of the Baltic Sea and I have a couple of wave bouys that I’d like to calibrate and validate the model against. I would like to use satellite wind data (ECMWF) for wave generation.

Are there anyone out there who have used this och similar data sources, or are there any examples of how this could be done?

Thank you in advance!

/Schmirre

2

Hi [name removed],

I did something similar, although I did not use ECMWF. I used NCEP CFSR hourly wind data over my domain, and fed it into TELEMAC-2D through the subroutine meteo.f (see example wind_txy). This allowed me to look into storm surges resulting from the winds. The TELEMAC-2D simulation actually produced spacio-temporal wind file in *.slf format, which was then read by a separate TOMAWAC run for the assessment of waves. Look at my conference paper from TUC2014 for some more explanation.

I hope it helps,

[name removed]

1 Like
3

Hi [name removed], and thanks for your reply.

From what I understand, you manually extract winds from a climate reanalysis then? I was hoping there would be a way to extract data from a GRIB, NetCFD or similar file for every node in my mesh. But with this solution i guess that I need to specify the fictive weather stations I’d like to use and manually extract it, right?

Interesting paper by the way, and beautiful results!

Thanks alot,

Schmirre

4

Hi [name removed] ,

Exactly. I extracted from grib2 files the wind speed and direction time series as ascii text, and then I simply merged them into a text file consistent with the format used in wind_txy. The modification to meteo.f in wind_txy makes sure you get an interpolated wind field at every node in your mesh.

[name removed]

5

Hi [name removed]!

Thanks for the help! I stumbled upon a script called convertECMWF.py, do you know if it is possible to use this script to do the same thing, but without having to interpolate between arbitrary chosen wind stations?

/Emanuel