C404 Bias Adjustment DEM

[theobarnhart-USGS]

Hi HyTest,

Is there a DEM used for the bias adjustment process? A DEM is referenced in the metadata on sciencebase, but I can't find one on Hovenweep Caldera or in the GLOBUS endpoint linked from the data release.

Thank you!
-Theo

[sfoks]

@theobarnhart-USGS, do you want the DEM which was used to determine elevation for the adjustment? Thinking of this sentence below from the C404BA data release metadata:

"...Then, the bias in temperature values within each CONUS404 1 kilometer cell were adjusted based on the grid cell elevation. For grid cells less than 2000 meters in mean elevation, daily temperature was adjusted using a bias adjustment factor associated with the day of the year in which it is simulated to occur. "

[theobarnhart-USGS]

Thank you, @sfoks! Yes, that DEM would be great. I'm working on making SnowModel forcing files from this dataset and need the elevation for each grid cell.

[aubreyd]

Hi @theobarnhart-USGS! I am confirming with the team (particularly @YongxinFred) so don't take this as truth yet, but my guess is that they used the HGT_M field in the WRF-Hydro/Noah-MP geogrid file. You can find that in the WRF-Hydro data release. Go to the Globus endpoint then /NIWAA_200910_202110_ScienceBase_Data/static_input_files/WRFHydro_geo_em.d01.CONUS_1km_NIWAAv1.0.nc. If you need the spatial reference info you can find that in the same directory under WRFHydro_GEOGRID_LDASOUT_Spatial_Metadata_CONUS_1km_NIWAAv1.0.nc

There is also the 4-km DEM that was part of the original CONUS404 WRF simulations - I can try to find a link to that file if useful.

[theobarnhart-USGS]

Thank you @aubreyd! I'll wait to proceed until you have a definitive answer, but from a cursory look that seems like the right information. That file also has some other variables that I was hoping to find too, which is great!