FYI,
Here's my experiences (pdf document) using five different sources for
sub setting HRRR model data for display, field calculations and
sequencing in IDV:
https://www.dropbox.com/s/y10a3d9czj949lo/HRRR_Model_DataServer_Options_20170212.pdf?dl=1
The multiple time dimensions in the thredds servers for HRRRx cause real
problems for generating time aggregations as you know. The NOMADS grads
Opendap server is hopelessly out of date (no units in metadata). The
thredds server at Unidata for operational HRRR 2d fields works fine for
time aggregation, but lacks two import fields for me: surface and latent
heat flux.
Does anyone know what the future plans are for NOMADS and HRRR v3? I've
sent in a support question with no reply. It would be great if these
used a thredds server, included more 2D fields, and included the native
plus pressure 3D fields.
Walt Rogers
