Input data time resolution

Questions/topics related to the first-guess input meteorological data, and Vtables
Post Reply
dniloash
Posts: 5
Joined: Sat May 23, 2020 10:14 pm

Input data time resolution

Post by dniloash » Thu May 28, 2020 11:43 pm

Hello.
I would like to know if its possible to use input data with time resolution less than one hour.
I think the intermediate format just can be created with the format YYYY-MM-DD_HH, but the namelist options allows the parameter interval_seconds.

Ming Chen
Posts: 963
Joined: Mon Apr 23, 2018 9:42 pm

Re: Input data time resolution

Post by Ming Chen » Sat May 30, 2020 2:56 pm

In namelist.wps, one option is interval_seconds, which can be specified based on the interval of your forcing data. Can you try?
WRF Help Desk

dniloash
Posts: 5
Joined: Sat May 23, 2020 10:14 pm

Re: Input data time resolution

Post by dniloash » Sat May 30, 2020 7:28 pm

Yes i can try, but how I write the intermediate files with less time resolution of one hour?
its posible something like FILE:YYYY–MM–DD_HH:MM:SS? or how can i do it.

Ming Chen
Posts: 963
Joined: Mon Apr 23, 2018 9:42 pm

Re: Input data time resolution

Post by Ming Chen » Sat May 30, 2020 7:44 pm

Yes that is what I suggested. Please let me know whether it works. We haven't processed forcing data at such a high temporal resolution. I look forward to the results. Thanks.
WRF Help Desk

dniloash
Posts: 5
Joined: Sat May 23, 2020 10:14 pm

Re: Input data time resolution

Post by dniloash » Sat May 30, 2020 11:35 pm

I got some results.
Its possible and it seems to work well.
thanks.

Ming Chen
Posts: 963
Joined: Mon Apr 23, 2018 9:42 pm

Re: Input data time resolution

Post by Ming Chen » Mon Jun 01, 2020 3:48 pm

Thanks for the update, --- it is good to know that it works.
I just want to confirm that, you write intermediate file named like: FILE:YYYY–MM–DD_HH:MM:SS
Then specify time_interval in namelist.wps based on the temporal resolution of your input data.
WRF Help Desk

dniloash
Posts: 5
Joined: Sat May 23, 2020 10:14 pm

Re: Input data time resolution

Post by dniloash » Mon Jun 01, 2020 5:42 pm

Usually you don't need minutes and seconds because time interval is one hour or more, in this case if you put them (hh:mm:ss or hh:mm), metgrid.exe can't find the files. but if the time interval is less than one hour, you need the minutes (hh:mm) and similarly if you put the seconds metgrid can't find the intermediate files.

Ming Chen
Posts: 963
Joined: Mon Apr 23, 2018 9:42 pm

Re: Input data time resolution

Post by Ming Chen » Mon Jun 01, 2020 5:45 pm

Thank you for the update !
WRF Help Desk

Post Reply

Return to “Meteorological Input Data”