Search found 16 matches
- Wed Sep 28, 2022 6:58 pm
- Forum: Job Opportunities
- Topic: Post-Doc at Oregon State University: Tides in MOM6-SIS2
- Replies: 0
- Views: 7043
Post-Doc at Oregon State University: Tides in MOM6-SIS2
Summary: (1.0 FTE; 12 months) Applicants are invited for a post-doctoral position in the College of Earth, Ocean, and Atmospheric Science at Oregon State University to participate in a 3-year NOAA-sponsored project, "Enhancing the Realism of MOM6-SIS2 Simulations with Ocean Tides." This pr...
- Wed Aug 24, 2022 3:50 pm
- Forum: ROMS Benchmarks
- Topic: Consumer-grade desktop for toy-"operational" model running 24/7?
- Replies: 19
- Views: 36090
Re: Consumer-grade desktop for toy-"operational" model running 24/7?
Hi Stef, The other significant cost to consider with a cloud provider or hardware rental is the data egress. I tried to price this out for a project last year, and the cost of moving the data around for analysis was quite significant. To estimate the price depends on having a rather detailed model f...
- Tue Sep 08, 2020 6:02 am
- Forum: ROMS Discussion
- Topic: Appropriate open boundary conditions for tidal forcing
- Replies: 11
- Views: 8198
Re: Appropriate open boundary conditions for tidal forcing
Hi Guangyu, If you have the time to run a test from an idealized initial condition, it might illustrate the performance of the boundary conditions. If you designed an idealized initial condition (and matching open boundary conditions) with, say, a large eddy centered on the midpoint of one boundary,...
- Mon Dec 02, 2019 3:45 pm
- Forum: ROMS Trivia
- Topic: u,v high resolution database
- Replies: 7
- Views: 13010
Re: u,v high resolution database
AMSEAS was running back in 2010, @ 1/36 deg:
https://www.ncdc.noaa.gov/data-access/m ... o-ncom-reg
-Ed
https://www.ncdc.noaa.gov/data-access/m ... o-ncom-reg
-Ed
- Wed Oct 24, 2018 5:27 am
- Forum: ROMS Adjoint
- Topic: what are the meanings of adjoint model's input and output
- Replies: 3
- Views: 7547
Re: what are the meanings of adjoint model's input and outpu
Hi Li, Suppose you are interested in a linear function of the model's trajectory. Let the value of this function be denoted, y. Then there exists another function, call it K(x,t), which permits you to compute y using an inner product: y = \int_D \int_0^T K(x,t) u(x,t) dx dt. The model's trajectory i...
- Sat May 05, 2018 4:53 am
- Forum: ROMS Installation
- Topic: Will it be convenient (in the long run) to use Windows?
- Replies: 7
- Views: 9406
Re: Will it be convenient (in the long run) to use Windows?
lol. Aha, I was replying to the OP. Just noticed it was from 2 yr ago.
- Fri May 04, 2018 5:08 am
- Forum: ROMS Installation
- Topic: Will it be convenient (in the long run) to use Windows?
- Replies: 7
- Views: 9406
Re: Will it be convenient (in the long run) to use Windows?
I assume this is a sincere question, rather than trolling to start a flame-war. Once you get over the modest (but never-ending) learning curve, you will find so much better tools are available in the native linux world. Your path will be easier if you bite the bullet and buy a decent book on linux s...
- Sun Mar 19, 2017 3:58 pm
- Forum: ROMS Discussion
- Topic: ROMS not bit-reproducible: northern boundary?
- Replies: 36
- Views: 41420
Re: ROMS not bit-reproducible: northern boundary?
There is some literature on maintaining bit-reproducible simulations under MPI, e.g.,
http://www.sciencedirect.com/science/ar ... 9114000507
While the lack of bit-level reproducibility is annoying, hopefully the divergence of solutions is not physically significant.
http://www.sciencedirect.com/science/ar ... 9114000507
While the lack of bit-level reproducibility is annoying, hopefully the divergence of solutions is not physically significant.
- Fri Jul 11, 2014 4:06 am
- Forum: ROMS Discussion
- Topic: Announcement: Modeling and Observing the Tides in the Ocean
- Replies: 0
- Views: 1661
Announcement: Modeling and Observing the Tides in the Ocean
Jim Richman, Richard Ray, Patrick Cummins and I have proposed a session #2250 on Modeling and Observing the Tides in the Ocean at the 2014 Fall AGU Meeting in San Francisco. I invite you to consider submitting an abstract to this session. The session summary is: A resurgence of interest in ocean tid...
- Thu Jun 12, 2014 1:22 am
- Forum: ROMS Discussion
- Topic: tidal analysis of large output files
- Replies: 22
- Views: 27416
Re: tidal analysis of large output files
Hi Hashemi, If you are comfortable modifying the ROMS code, it is not too difficult to do the harmonic analysis during the run. The steps are more-or-less as follows: - Select a set of tidal frequencies for analysis - Determine the duration of run needed to separate the selected frequencies - Start ...
- Fri Apr 06, 2012 2:45 am
- Forum: ROMS Discussion
- Topic: modeling internal tides in a canyon: solution not converged
- Replies: 7
- Views: 6957
Re: modeling internal tides in a canyon: solution not conver
Hi Shih-Nan This can be a difficult problem. So it is good you are checking out convergence. From my understanding of Shchepektin's descriptions of the numerics, the energetics of ROMS should be pretty accurate, but I think DiLorenzo is the only one to systematically verify the convergence of intern...
- Sun Jan 30, 2011 4:05 am
- Forum: ROMS Problems
- Topic: Intel’s new i7 980x CPU gives disappointing speedup
- Replies: 48
- Views: 105640
Re: Intel’s new i7 980x CPU gives disappointing speedup
Alex, Thanks a lot for writing this review and taking the time to engage with the original poster. It is no small task to assemble the list of examples and history into a narrative as you have done. And I think your final take-home point is very well said. If you would consider writing a topical pie...
- Fri Sep 10, 2010 2:51 am
- Forum: ROMS Problems
- Topic: Results and issues of barotropic tidal run
- Replies: 14
- Views: 10997
Re: Results and issues of barotropic tidal run
Check out the FES2004 tidal model. It may be more accurate in this region.
-Ed
-Ed
- Mon Jul 26, 2010 2:08 am
- Forum: ROMS Discussion
- Topic: Why I got such a different tide solution using TPXO data
- Replies: 13
- Views: 8696
Re: Why I got such a different tide solution using TPXO data
Hi Stone, In addition to the other suggestions, above, you should know that the OTIS bathymetry is unlikely to yield a very good result here. There is a paper by Jan Sen that discusses the shelf resonance between China and Taiwan, and the importance of good bathymetry for modeling M2 correctly. Also...
- Tue Jan 05, 2010 5:21 pm
- Forum: Job Opportunities
- Topic: Graduate Research positions, Portland State University
- Replies: 0
- Views: 2429
Graduate Research positions, Portland State University
Position 1: A Graduate Research Assistantship is available immediately upon acceptance for an individual with an undergraduate (or MS) degree in physics, applied math or related discipline, interested in evolving tidal amplitudes in the Pacific Ocean and their relationship to global climate. Applica...
- Tue Jan 05, 2010 5:18 pm
- Forum: Job Opportunities
- Topic: Postdoc: North Pacific Tides, Portland State University
- Replies: 0
- Views: 2711
Postdoc: North Pacific Tides, Portland State University
Postdoctoral Research Associate Department of Civil and Environmental Engineering, Portland State University Position Summary: The Portland State University (PSU) Department of Civil and Environmental Engineering, Maseeh College of Engineering and Computer Science, has a diverse and growing program ...