Articles | Volume 14, issue 1
Geosci. Model Dev., 14, 391–407, 2021
https://doi.org/10.5194/gmd-14-391-2021
Geosci. Model Dev., 14, 391–407, 2021
https://doi.org/10.5194/gmd-14-391-2021

Model evaluation paper 25 Jan 2021

Model evaluation paper | 25 Jan 2021

Performance of offline passive tracer advection in the Regional Ocean Modeling System (ROMS; v3.6, revision 904)

Kristen M. Thyng et al.

Data sets

ROMS input files Kristen Thyng, Xu Chen, and Steve Morey https://doi.org/10.6084/m9.figshare.c.5097350.v1

ROMS Input Files (second source) Kristen Thyng, Xu Chen, and Steve Morey https://doi.org/10.7266/YF0QPBFC

Output from running offline passive tracer in ROMS ocean model Kristen Thyng https://doi.org/10.7266/7R0N3FX4

Model code and software

Offline passive tracer in ROMS (Version v1.1) Kristen Thyng, Daijiro Kobashi, Veronica Ruiz Xomchuk, Lixin Qu, Xu Chen, and Robert D. Hetland https://doi.org/10.5281/zenodo.4455738

Run files for offline passive tracer simulation in ROMS Kristen Thyng https://doi.org/10.5281/zenodo.4278115

Run files for online simulation Kristen Thyng https://doi.org/10.5281/zenodo.4455715

Run files for offline passive tracer simulation in ROMS (Version v1.1) Kristen Thyng and Veronica Ruiz Xomchuk https://doi.org/10.5281/zenodo.4455760

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Short summary
We modified the ROMS model to run in offline mode so that previously run fields of sea surface height and velocity fields are input to calculate tracer advection without running the full model with a larger time step; thus, it is faster. The code was tested with two advection schemes, and both are robust with over 99 % accuracy of the offline to online run after 14 simulation days. This allows for ROMS users to maximize use of new or existing output to quickly run additional tracer simulations.