The salinity is too small

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chenzhixing
Posts: 10
Joined: Tue Feb 22, 2022 3:01 am
Location: Ocean University of China

The salinity is too small

#1 Unread post by chenzhixing »

Hi, everyone,
I have run the Roms nearshore with horizontal resolution is 500 m.
In model, we only give the tidal foring and the river foring.
we use the k-kl (turbulence closure parameters) of GLS.
After the model is stable, I find the surface salinity of the modeling region is smaller than that in observation.
even if we rise the salinty of river from 0 to 20, the runoff quantity is the real observation, the it doesn't help the increase in salinity. :(

we find one of point, compare the result of surface salinty in modeling and observation:
q1.jpg

Also, we have test the .bry file, the salinty in east boundry is about the 31,while the salinty in the modeling of the east boundry is about 25~26 in the same time. :?:

Thanks in advance for any help,
Zhixing Chen
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MIDHILAVARNAV
Posts: 30
Joined: Fri Dec 15, 2017 6:07 pm

Re: The salinity is too small

#2 Unread post by MIDHILAVARNAV »

Have you tried adding salinity correction term to the CPPDEFS key ?

chenzhixing
Posts: 10
Joined: Tue Feb 22, 2022 3:01 am
Location: Ocean University of China

Re: The salinity is too small

#3 Unread post by chenzhixing »

MIDHILAVARNAV wrote: Tue May 09, 2023 5:40 am Have you tried adding salinity correction term to the CPPDEFS key ?
Thanks for your reply, whether you mean is turning on the ‘QCORRECTION’ and ‘SCORRECTION’ these two switches in the .h file?

MIDHILAVARNAV
Posts: 30
Joined: Fri Dec 15, 2017 6:07 pm

Re: The salinity is too small

#4 Unread post by MIDHILAVARNAV »

Yes, adding the same in the header file and recompiling it.

chenzhixing
Posts: 10
Joined: Tue Feb 22, 2022 3:01 am
Location: Ocean University of China

Re: The salinity is too small

#5 Unread post by chenzhixing »

MIDHILAVARNAV wrote: Tue May 09, 2023 8:50 am Yes, adding the same in the header file and recompiling it.
I gave it a try, and find that these two switches need the .frc file, however I don't have such a forcing file.

MIDHILAVARNAV
Posts: 30
Joined: Fri Dec 15, 2017 6:07 pm

Re: The salinity is too small

#6 Unread post by MIDHILAVARNAV »

The forcing file which is required is climatological (roms_frc_woa365.nc), which could be created easily using the Romstools toolbox (specifically for your grid) using
climatological World Ocean Atlas data (WOA2013).

chenzhixing
Posts: 10
Joined: Tue Feb 22, 2022 3:01 am
Location: Ocean University of China

Re: The salinity is too small

#7 Unread post by chenzhixing »

MIDHILAVARNAV wrote: Wed May 10, 2023 8:11 am The forcing file which is required is climatological (roms_frc_woa365.nc), which could be created easily using the Romstools toolbox (specifically for your grid) using
climatological World Ocean Atlas data (WOA2013).
Thank you for your reply, I will have a try. :D

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