Deep sea SDM Tools

• Depth Weighted Environment Extrapolation aka Cookie Cutter (Davies & Guinotte 2011)

  • Inputs

    • Input Bathymetry Raster Directory - a directory of rasters that have been clipped to match the depths of the environmental input data. Obtain these from the tool: "Extract the depths from the bathymetric layer you insert". Ensure you have a defined coordinate system for the input.
    • Select depths (WOA13v2, WOA05, Steinacher or Custom (in CSV style) - select your depths from a standard product range, or enter your own in csv style (no spaces).
    • Input Environment Raster Directory - directory of environmental rasters extracted as grids with the final part of the name the depth as an integer (e.g. silicate0, silicate10). Obtain these from World Ocean Atlas or similar, and extract using the tool: "Extract depth layers for variables from World Ocean Atlas NetCDF files" or the parallel processing version (mp).
    • Name of environment layers (excluding the depth, i.e. i00an) - the name of the environmental layer without the depth integer at the end (e.g. silicate, i00an1, etc).
    • Temporary Directory - Temporary directory, doesn't need to exist as the script will create it for you.
    • Output raster - Specify an output raster name and location, this will be your final output. On successful completion you can delete the temporary directory, as you only really need that if you have an issue and need to bug check.

  • Common problems

    • If not all of your input layers has a coordinate system defined, the script will fail, so you need to run "Generic Tools - Batch project directory of rasters" to verify.
    • If you get a coordinate system error but you know that all the layers has one, then you may actually have incorrectly defined your file paths, hard to do in ArcToolBox, but easy if running as stand-alone.

• Extract the depths from the bathymetric layer you insert

• Extract depth layers for variables from World Ocean Atlas NetCDF files