GLOBEC - Northeast Pacific

The purpose of this page is to allow the extraction of a complete set of ROMS input and forcing files to re-run portions of existing model physical solutions in a subdomain of interest. The list of existing ROMS simulations is on the right side of this page. The extraction will deliver open boundary conditions, forcing files, initial conidtions and model parameters from the simulation's solution. These files can be used to re-run ROMS in the choosen subdomain with additional components (e.g. ecosystem models, passive tracers, etc.). This will allow the user to save computational time, as the submodel will have a smaller grid, but yet preserve better posed open boundary condition. This setup will allow to test different ecosystem model within the same physical framework as well as perform ensembles using passive tracers. The extraction is based on 2 STEPS and it requires a MATLAB installation on your computer, if you want to extract the files yourself.

(STEP 1 - selection) Select the indices of the subgrid , the initial condition time and the timespan of interest. You will donwload some MATLAB files for the grid of interest to complete this step. Alternatively you can just send an email to globec_extract@o3d.org with the information required in the selection script (see example for the NEPD simulation on the right). We will perform the steps for you and post the files on the web.

(STEP 2 - extraction) The files can be extracted either at the same or double resolution of the naitive simulation. To extract the files you have 2 options.

(OPTION 1 - for EXPERIENCED USER) The file extraction can be done on your computer, if you download and install the additional MATLAB software requirments [ NetCDF | OpenDAP | RNT Toolbox ] and run the script provided below.

(OPTION 2 - we do it for you) To simplify your life, the extraction can be done by sending the information obtained in STEP 1 to the email globec_extract@o3d.org. If you send an email the files will be posted on the web for download. See some examples of pre-existing subdomains. Please include the type of redsolution.

Click on the ROMS solution of interest on the right to get started.