> I've noticed several sources of HRRR model data for subsetting and > generating display (custom 2D grids) in IDV. Can you suggest alternative > servers or alternative solutions? > > 1) From thredds Unidata: www.unidata.ucar.edu/georesources/idvcatalog.xml > > NCEP HRRR v2 - Has the 2D fields I need except surface heat flux and > latent heat flux. The NOMADS Grads server is showing these two fields > (among others) that I need. Can Unidata ad these fields? No 3D native > level data. > Hi Walter, According to our developer in charge the Thredds data server, the two fields you mentions that are missing from HRRR v2 do not get sent across noaaport , we would need to request that those be added to CONDUIT and not sure when will this be available. > GSD HRRR (I assume it's V3) - When selecting 2D fields, I get a strange > collections of grid times. Ex: Sat the model run time is 1400Z. It shows > 1401, 1402... 1418, then 1415, 1430, 1445 ... to end model forecasts. > This is causing problems during IDV display generation. > Some variables do have different time intervals, in general, the IDV should be able to create display. You can also create two separated displays for two period of times. I am not sure I understand your problem correctly. > 2) From thredds esrl: esrl.noaa.gov/gsd/thredds/catalog.xml > > HRRR V3 non-operational. Has wrfnat (all native 3d levels) and 2D > fields. This server has all the fields and more that are desirable (i.e. > TKE, fractional shallow cloud, etc). But, I cannot time aggregate the > individual grid times in IDV. > Since this gridded dataset has more than one time dimensions , the IDV can not do the time aggregation correctly. If there is only one time dimension, you can simply set the Data Source Type as "Aggregate Grids by Time". What you can do here is to load the individual dataset first, and then call the Formulas > Grids > Time steps > Merge time sequences, when the new window popup, you can select variable from each time and click "Add selected", and select a display type, and create display. This is not a smart way to do the aggregation, we are working on better solution in the next release. > 3) NOMADS server - Grads v2.0 Opendap - Accessing this through the > motherlodelist > > HRRR V2- operational. No 3d wrfnat (native levels). It does have 2D > fields for surface heat flux and latent heat flux among others. No units > defined in metadata! So, IDV does not play well when creating custom > grids and displays. You (/we) can use ncml to add some metadata to the dataset, but the better solution is to let the data provider to do modify the data to be more CF compliance. Yuan > > Help! > > I'm going to cross post this in idvusers > > Walt Rogers > > Ticket Details =================== Ticket ID: NXH-468295 Department: Support IDV Priority: Normal Status: Open =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.
NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.