Search found 17 matches

by fLy0516
Tue Nov 05, 2019 1:07 pm
Forum: ROMS Discussion
Topic: open boundary for future projection of CMIP6 downscaling
Replies: 11
Views: 515

Re: open boundary for future projection of CMIP6 downscaling

I used the CIMP BCC data to create ini and bry files , which came from the same dataset.
by fLy0516
Wed Sep 18, 2019 1:42 am
Forum: ROMS Discussion
Topic: open boundary for future projection of CMIP6 downscaling
Replies: 11
Views: 515

Re: open boundary for future projection of CMIP6 downscaling

According to rtoste's suggestion, I recreated the initial and boundary files from CMIP for my simulation, then it works well without blow-up problem.
by fLy0516
Tue Sep 17, 2019 1:08 am
Forum: ROMS Discussion
Topic: open boundary for future projection of CMIP6 downscaling
Replies: 11
Views: 515

Re: open boundary for future projection of CMIP6 downscaling

Yes, I'm using the initial condition from CMIP.

By comparing the u/v from CMIP and SODA, I found u/v from CMIP is about 0.5m/s smaller than soda,
Is it possible that the smaller current speed courses the blow-up?
by fLy0516
Sat Sep 14, 2019 8:08 am
Forum: ROMS Discussion
Topic: open boundary for future projection of CMIP6 downscaling
Replies: 11
Views: 515

Re: open boundary for future projection of CMIP6 downscaling

Yes, you are right. there are strong current speed at the open boundaries,and which course the zeta is large. current is shown as following. The values for LBC, I guess, are these: EAST_FSCHAPMAN Eastern edge, free-surface, Chapman condition. EAST_M2FLATHER Eastern edge, 2D momentum, Flather conditi...
by fLy0516
Sat Sep 14, 2019 2:00 am
Forum: ROMS Discussion
Topic: open boundary for future projection of CMIP6 downscaling
Replies: 11
Views: 515

Re: open boundary for future projection of CMIP6 downscaling

zeta from restart file is extremely abnormal at open boundary ,

u/v are unreasonable throughout the region.

temp/salt are plausible.

figures as shown below.
by fLy0516
Sat Sep 14, 2019 12:51 am
Forum: ROMS Discussion
Topic: open boundary for future projection of CMIP6 downscaling
Replies: 11
Views: 515

Re: open boundary for future projection of CMIP6 downscaling

I used ROMS3.5 and modified the program from CROCO ROMSTOOLS https://www.croco-ocean.org/ to create OBC file. It seems the blow-up did not happen at the boundary. My grid resolution is 0289x0379x0020, with open boundary at the south and the east, the blow-up message as shown below. STEP Day HH:MM:SS...
by fLy0516
Fri Sep 13, 2019 9:16 am
Forum: ROMS Discussion
Topic: open boundary for future projection of CMIP6 downscaling
Replies: 11
Views: 515

open boundary for future projection of CMIP6 downscaling

Hi, Recently I used CMIP6 BCC results to do some future projection business. When the open boundary created by CMIP BCC ocean data, there is a blowing-up problem. However, changing the boundary file from SODA data , the model is able to run successfully . For future projection, maybe it's unreasonab...
by fLy0516
Fri Jun 07, 2019 7:12 am
Forum: ROMS Discussion
Topic: bulk flux advice from clivar community
Replies: 3
Views: 853

Re: bulk flux advice from clivar community

Does this advice also suit for ROMS3.5 ? I use ROMS3.5 BULK_FLUXES with model resolution finer than 1/4 degree,and recently I confused why the timeseries of my model results doesn't show trend and interannual variance although it was forced by monthly forcings. Maybe I should use relative winds inst...
by fLy0516
Fri May 31, 2019 10:57 pm
Forum: ROMS Discussion
Topic: cppdefs for BULK_FLUX
Replies: 11
Views: 1043

Re: cppdefs for BULK_FLUX

Recently I simulate the model under CMIP6 forcing, there are a question about the TIME_REF . The Calendar for CMIP6 downloaded variables is "365 days" , however that is "365.25days" for TIME_REF = 0 in ROMS .in file。 what should do to match the ROMS calendar and CMIP6 calendar? I would really apprec...
by fLy0516
Thu May 30, 2019 6:59 am
Forum: ROMS Discussion
Topic: zeta abnormal in Feburary for both ROMS3.5 and ROMS3.7
Replies: 0
Views: 156

zeta abnormal in Feburary for both ROMS3.5 and ROMS3.7

Hi everyone, When I plot monthly area-averged model results, there are a confused problem where zeta in Febuary always higher than expected . This phenomenon appeares in every year while results in other month are normal. ROMS3.7 for climatology(SODA , COADS monthly dataset), use FORCING, ROMS3.5 fo...
by fLy0516
Fri May 03, 2019 8:03 am
Forum: ROMS Discussion
Topic: cppdefs for BULK_FLUX
Replies: 11
Views: 1043

Re: cppdefs for BULK_FLUX

Thank all you for giving valuable guides.
by fLy0516
Thu May 02, 2019 7:04 am
Forum: ROMS Discussion
Topic: cppdefs for BULK_FLUX
Replies: 11
Views: 1043

Re: cppdefs for BULK_FLUX

Now I begin to doubt my simulation steps. My task is to simulate sea level height in future 50 or 100 years. So I separate it into three steps: First, simulating the climatology condition for my study area until model is stable. Forcing fields in this step are come from climatology datasets. Second,...
by fLy0516
Thu May 02, 2019 3:29 am
Forum: ROMS Discussion
Topic: cppdefs for BULK_FLUX
Replies: 11
Views: 1043

Re: cppdefs for BULK_FLUX

When checked my input fields, I find another possible mistake. As arango said activate LONGWAVE_OUT and provide downward longwave radiation so bulk_flux will subtract the outgoing IR by using ROMS surface temperature (K), infrared emissivity, and Stefan-Boltzmann constant. I find my input fileds the...
by fLy0516
Thu May 02, 2019 1:39 am
Forum: ROMS Discussion
Topic: cppdefs for BULK_FLUX
Replies: 11
Views: 1043

Re: cppdefs for BULK_FLUX

My current strategy is to activate LONGWAVE_OUT and provide downward longwave radiation so bulk_flux will subtract the outgoing IR by using ROMS surface temperature ( K ), infrared emissivity, and Stefan-Boltzmann constant. I also use downward shortwave radiation and I activate COOL_SKIN to correct...
by fLy0516
Thu May 02, 2019 1:13 am
Forum: ROMS Discussion
Topic: cppdefs for BULK_FLUX
Replies: 11
Views: 1043

Re: cppdefs for BULK_FLUX

Turning on BULK_FLUX is one step. What are you using to provide the atmospheric fields? How frequently? You have: DIURNAL_SRFLUX Modulate shortwave radiation by the local diurnal cycle. which I would not use if the atmospheric fields are say three-hourly. Thanks a lot for your reply. I uesed Uwind,...
by fLy0516
Wed May 01, 2019 4:11 am
Forum: ROMS Discussion
Topic: cppdefs for BULK_FLUX
Replies: 11
Views: 1043

cppdefs for BULK_FLUX

At first, I used Forcing Flux input files to simulate my model. Comparing with SODA Climatology, The temperature results are not so good(shown below). Then be advised to using Bulk Flux input files, I open #define BULK_FLUXES in .h files. The result in the first month is close to SODA, but it gets w...
by fLy0516
Mon Feb 05, 2018 12:58 pm
Forum: ROMS Results
Topic: simulating SCS sea level ,set time_cycle =366 ,right?
Replies: 0
Views: 833

simulating SCS sea level ,set time_cycle =366 ,right?

Hi. Firstly thank you for your attention on my question.I am a green at the roms. Although i succeed in make files ——grd.nc, frc.nc, clm.nc , bry.nc and ini.nc , I am not sure if those files are right. I run my model ,but there are consistently Blowing Up problems.I tell what I have done in detail, ...