WRF output on ArcGis

Miscellaneous questions you have about anything related to graphically displaying WRF output

WRF output on ArcGis

Postby MGM » Wed Apr 11, 2012 12:41 pm

Hi there,

Can someone help me plotting wrf output (netcdf format) to ArcGis? I'm using Mercator projection.

Thanks =)
MM
MGM
 
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Joined: Mon Mar 05, 2012 1:00 pm

Re: WRF output on ArcGis

Postby alainaketh » Wed Apr 20, 2016 5:09 pm

Hi,

Importing NetCDF to ArcGIS is not straightforward, that is to say, you can't use the "Add Layer" button (the yellow one that has a little black plus sign).

To import NetCDF files to ArcGIS go to "Search" in your task bar and type "netcdf". Click on "Make NetCDF Raster Layer". You will be prompted with a window where you will have to select:

1) Your NetCDF file (the one that has the .nc extension).
2) The variable you want to plot (for example, if it's precipitation you would need to select RAINC, RAINNC or RAINSH. See my post http://forum.wrfforum.com/viewtopic.php?f=9&t=4194 to know what they mean).
3) The name of the layer. ArcGIS gives you a default name but it would be useful if you change it just to know what you are plotting.

Bob's your uncle!

Also, if your NetCDF contains a lot of time steps, ArcGIS will plot the first one (which is normally all zeros) so right-click your layer in the Layer Manager (that bar to your left where all the elements) > Properties > go to NetCDF tab > select the time step you want. You can also change the variable you are plotting.

WRF yields a hell load of variables. A list of them with what they mean and their units can be found here: https://pongsona.wordpress.com/2011/10/10/wrf-output-parameters/

Cheers,

Alaina.
Hydrology Researcher, University of Bristol
alainaketh
 
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