Direction of Uwind and Vwind

General scientific issues regarding ROMS

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zhangtianhao
Posts: 49
Joined: Fri May 11, 2018 5:36 pm
Location: Beijing Normal University

Direction of Uwind and Vwind

#1 Post by zhangtianhao »

Hi there,
I have a question which is maybe easy for you.
I wonder that Uwind and Vwind in forcing nc file refers to eastward and northward direction in reality or eta and xi direction in model domain.

Thanks!
Hoty

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kate
Posts: 3940
Joined: Wed Jul 02, 2003 5:29 pm
Location: CFOS/UAF, USA

Re: Direction of Uwind and Vwind

#2 Post by kate »

For the incoming 2-D forcing, it depends. ROMS will check the dimensions of each field you provide. If they match that of your ROMS grid, it assumes Uwind and Vwind are aligned in the directions of the grid. If not, it assumes it needs to do the interpolation and the rotation to the ROMS grid.

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zhangtianhao
Posts: 49
Joined: Fri May 11, 2018 5:36 pm
Location: Beijing Normal University

Re: Direction of Uwind and Vwind

#3 Post by zhangtianhao »

kate wrote: Sat Apr 10, 2021 7:39 pm For the incoming 2-D forcing, it depends. ROMS will check the dimensions of each field you provide. If they match that of your ROMS grid, it assumes Uwind and Vwind are aligned in the directions of the grid. If not, it assumes it needs to do the interpolation and the rotation to the ROMS grid.
Thanks, Kate, you made it very clear to me now.

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