John Luick
Director

Highest resolution global ocean model?

Can someone please tell me which of the established, open access, global ocean models has the highest resolution? I was about to begin looking at each of the websites to see the resolution of their latest version, when this announcement dropped in my email. I decided to see if someone out there can answer it for me. 

I have long felt that for many applications (say for sediment transport, or an oil spill), in which people at present sort of reflexively run a local model nested in some global model, it would make more sense (at least as a first approximation) to just use the global model velocities/temperature/salinity, and then perhaps apply some analytic solutions locally, and maybe superimpose tides from a global tidal model. But in doing so, I would want to use the highest resolution global model. 

I also hope to get some opinions from others, maybe even start a conversation.      

Technical conversations
3 months 1 week ago
3 months 1 week ago

Dear John,
We're looking for an expert to answer your question.
Stay tuned!
Cedric (User Support Level 1)

3 months 1 week ago

Cedric, thanks for the info. I just want to add that I was not informed of your reply. It might be good to implement a notification system. 

3 months 1 week ago

Dear John,
Many thanks for your message.
Indeed, the notification scheme is still being fine-tuned, and this issue has been identified.
Regarding your question, I'm in the process of contacting an expert again.
Many thanks in advance for your patience,
Cedric (User Support Level 1)

3 months ago

Dear John,

To my knowledge there are mainly two products available in real time at high resolution .
1) Mercator Ocean produces global analyses and forecasts at 1/12° based on NEMO (without tides), which are available from the European Copernicus Marine Service: https://doi.org/10.48670/moi-00016 https://data.marine.copernicus.eu/product/GLOBAL_ANALYSISFORECAST_PHY_001_024/description

As you will see in the documentation a tidal component based on FES is available on the same grid in one of the datasets (the name of the dataset finishes by "merged-uv_PT1H-i")

2) The US NRL&COAPS produce global analyses and forecast at 1/12° using HYCOM (with tides) which can be accessed here:
  GOFS 3.1: 41-layer HYCOM + NCODA Global 1/12° Analysis

Both models display very good performance on average, but their caracteristics will differ locally. I would recommend to test several model solutions whenever possible. I guess both the European and US teams will be interested in your feedback or questions within this discussion stream! 

Kind regards,

Marie