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COAWST modeling system git repository
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The issue of higher salinity results #295

Open wjlyx opened 2 months ago

wjlyx commented 2 months ago

After running WRF-ROMS to obtain results for February 1-7, 2014, I noticed that the salinity is higher and the flow field is inconsistent compared to the CMEMS results. How can I improve the accuracy of my simulation?The western and northern boundaries are set to Clo, and temperature and salinity are set to Gra. The MY25_MIXING scheme is used in the .h file. image My .in and .h files are as follows. ocean_sandy.in.txt sandy.h.txt

jcwarner-usgs commented 2 months ago

there are many issues that could be happening here. Cemes shows a coastal current from the NE with fresher water. Maybe you need to add that to ROMS? Did you compare WRF winds to measurements? are you nudging roms T&S? If you want more direct ROMS help, then i suggest you post something on the rutgers site. This is basically a ROMS application question.

wjlyx commented 2 months ago

there are many issues that could be happening here. Cemes shows a coastal current from the NE with fresher water. Maybe you need to add that to ROMS? Did you compare WRF winds to measurements? are you nudging roms T&S? If you want more direct ROMS help, then i suggest you post something on the rutgers site. This is basically a ROMS application question.

Do I need to open the northern boundary to allow for material exchange regarding fresh water? I've chosen the 'Gra' option for T/S at the closed northern and western boundaries, and 'RadNud' for the southern and eastern boundaries. I will post my question on the ROMS forum. Thank you for your suggestions.

simion1232006 commented 2 months ago

there are many issues that could be happening here. Cemes shows a coastal current from the NE with fresher water. Maybe you need to add that to ROMS? Did you compare WRF winds to measurements? are you nudging roms T&S? If you want more direct ROMS help, then i suggest you post something on the rutgers site. This is basically a ROMS application question.

Do I need to open the northern boundary to allow for material exchange regarding fresh water? I've chosen the 'Gra' option for T/S at the closed northern and western boundaries, and 'RadNud' for the southern and eastern boundaries. I will post my question on the ROMS forum. Thank you for your suggestions.

Your northern/western boundaries are closed, so does not really matter what options. You may need to modify the nudging and scaling factor to use stronger nudging for influx. maybe try a smaller TNUDG time scale. image

wjlyx commented 2 months ago

there are many issues that could be happening here. Cemes shows a coastal current from the NE with fresher water. Maybe you need to add that to ROMS? Did you compare WRF winds to measurements? are you nudging roms T&S? If you want more direct ROMS help, then i suggest you post something on the rutgers site. This is basically a ROMS application question.

Do I need to open the northern boundary to allow for material exchange regarding fresh water? I've chosen the 'Gra' option for T/S at the closed northern and western boundaries, and 'RadNud' for the southern and eastern boundaries. I will post my question on the ROMS forum. Thank you for your suggestions.

Your northern/western boundaries are closed, so does not really matter what options. You may need to modify the nudging and scaling factor to use stronger nudging for influx. maybe try a smaller TNUDG time scale. image

Thank you for your suggestions. I just tried opening the northern boundary, but there was no significant change; the salinity is still higher than expected. I will try adjusting the two parameters you recommended. I also realized I didn't provide the .in file earlier; here is my .in file. ocean_sandy.in.txt