Global HYCOM Request – Non-Assimilative Daily Output

[Xiangpeng Wang (ENV - Staff)]

Dear HYCOM Data Team,

My name is Xiangpeng, and I am currently a postdoctoral researcher at the University of East Anglia. I am currently conducting research on oceanic eddy heat and salt transport, and I’m looking for appropriate HYCOM datasets to evaluate how climate models simulate these processes.

Specifically, I would like to know whether there exists any non-assimilative global HYCOM simulation at 1/12° resolution that provides daily output for temperature, salinity, and velocity fields.

Could you kindly advise on the availability of such datasets, and if so, provide the relevant FTP path or access link?

I understand that many existing experiments are assimilative. My intention is to compare pure model outputs with observations, so I’m seeking hindcast runs without data assimilation for consistency.

Thank you for your time and assistance.

 

Best regards,
Xiangpeng 

 

[Alan Wallcraft]

NRL ran a non-assimilative twin of the GOFS 3.0 reanalysis, but I don't think it was every publicly released.

Xiaobiao Xu has run 36-layer 1/12 degree global HYCOM with JRA55 forcing.  He may be able to provide mode output, although it is potentially a very large data set, see:

Xu, X., E.P. Chassignet, S. Dong and M.O. Baringer, 2022. Transport structure of the South Atlantic Ocean derived from a high-resolution numerical model and observations Front. Mar. Sci., 9:811398, doi:10.3389/fmars.2022.811398.

Such runs are described as "prescribed atmosphere" by the climate modeling community, and I'm not sure how relevant they are to cases with a coupled atmosphere.

Alan.