data frequency

General scientific issues regarding ROMS

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redhat007

data frequency

#1 Unread post by redhat007 »

Dear
Should data frequency be same in one force file? In the other hand:Is it possible to use one file with different frequency data in ROMS model?
To explain more : i have one file which contain several years data. Some years have 3 hourly data and another have 6 hourly data. Can i use it in ROMS?
cheers
redhat

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kate
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Re: data frequency

#2 Unread post by kate »

It should work as long as each has its own "time" dimension. You can have "wind_time" for the winds and "pair_time" for the surface pressure. In the old days, we let them each be an unlimited dimension and they therefore had to be in separate files, but now you can have files with more than one unlimited dimension. They don't have to be unlimited either, if that works best for you.

redhat007

Re: data frequency

#3 Unread post by redhat007 »

I have created separate files for each parameter. For example Pair have its own file (pair.nc) with own time dimension (pair_time). But its data does not have same frequency (3 hourly and 6 hourly).should it work, too?

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kate
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Re: data frequency

#4 Unread post by kate »

Yes, this should work. ROMS keeps track of each field independently - at least for the forcing files.

redhat007

Re: data frequency

#5 Unread post by redhat007 »

yes you are on right.
Sorry :oops: :oops: , but it means that Pair (as an example) data can have different frequency in its own file (Pair.nc file)?
thanks

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kate
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Re: data frequency

#6 Unread post by kate »

Yes, that's right - try it and see.

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