Thursday, August 12, 2010


So a few years ago Dr. Bill Sacks (clever man that he is) incorporated a spatial component to SIPNET. The implementation for the user is pretty straight forward.

Assuming that you can run SIPNET for a single site all you need to do is to create a climate file and if needed a parameter file for each location you need to run the model for.

The first field in the climate file is 'loc' usually this is set to zero - however you can tell SIPNET to run at many locations.

I put together a tutorial with Bill Sacks on how to do this for the NCAR ASP conference in 2008.

You can view the tutorial here (Regional Biogeochemica Cycling)

You need to create the spatial inputs either manually based on some input data you already have or you can use some sort of automated procedured based on climate re-analysis data or perhaps MTCLIM.

You also need to edit the "dot.param-spatial" file to tell SIPNET how many locations to expect.

The controls to switch on the spatial version are in

Open the file using your text editot
* Set RUNTYPE = standard
* Set FILENAME = NEW_Spatial_Files (to use the newly-created spatially-varying climate and parameter files)
* Set LOCATION = -1 (to run at all locations)

Below is just the graphic from the regional tutorial - it gives an idea of how the spatial data might look on a very regular grid.

Have fun,

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