Ocean Modeling Discussion

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 project is ...

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 ...

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 ...

AMSEAS was running back in 2010, @ 1/36 deg:

https://www.ncdc.noaa.gov/data-access/m ... o-ncom-reg

-Ed

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 ...

lol. Aha, I was replying to the OP. Just noticed it was from 2 yr ago.

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 ...

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.

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 ...

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 ...

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 ...

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 ...

Check out the FES2004 tidal model. It may be more accurate in this region.

-Ed

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 ...

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 ...

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 ...