opendrift global model (HYCOM) problem

Dear developers, In the gallery (documentation) you have an example with HYCOM global model that is not worling. LInk to the TDS is not valid https://opendrift.github.io/gallery/example_long_global_thredds.html as they changed it long time ago https://tds.hycom.org/thredds/dodsC/GLBy0.08/latest into: https://tds.hycom.org/thredds/dodsC/GLBy0.08/expt_93.0/FMRC/GLBy0.08_930_FMRC_best.ncd

This link was working until week ago, but now giving errors. Anyone having similar experience? p.s. you can ncdump -h the last link to have idea about the format. Strange added dimension time1 might be a problem?

Regards, Ivica

Jun 21 '24 07:06 ivicajan

Hi Ivica, and thank you for the notification. Yes, I also noticed problems with hycom-thredds the last week.

In fact, we used the FMRC several years ago, but then later changed to https://tds.hycom.org/thredds/dodsC/GLBy0.08/latest, but this seem to have been decommisioned sinced 6th June.

Testing now with the FMRC aggregate, it sometimes works partly, and sometimes not. Thus there seem to be some issues with the server or the underlying data files. Let's hope for a fix, as there seem to be no other global forecasts on tds.hycom.org

Jun 21 '24 09:06 knutfrode

It seems that this URL works well, and contains both history since 2013 and a 7 day forecast: https://www.ncei.noaa.gov/thredds-coastal/dodsC/hycom/hycom_sfc_agg/HYCOM_Surface_Aggregation_best.ncd

So I now replaced the two old tds.hycom.org URLs with this one in the examples and in data_sources.txt: https://github.com/OpenDrift/opendrift/pull/1326/files#diff-bee6fdd6382d055b008ee978f9e38d213dc52b8ed4f0be957e136df3d7b2fbd7

Jun 24 '24 10:06 knutfrode

This URL is presently containing HYCOM global forecasts, and is also included in the data_sources.txt file: https://tds.hycom.org/thredds/dodsC/FMRC_ESPC-D-V02_uv3z/FMRC_ESPC-D-V02_uv3z_best.ncd

Oct 31 '24 16:10 knutfrode