Tutorials

The examples in this tutorials are builds using Jupyter notebooks, which can be downloaded from the github repository.

• Visualize spherical harmonic filters in the spatial domain
  • 1. Import the necessary modules
  • 2. Define a set of locations and create unit loads at the specified locations
  • 3. Filter the unit loads with a Gaussian filter
  • 4. Add a version which is filtered with an anisotropic DDK4 filter
  • 5. Apply spherical harmonic synthesis on grids centered on the locations
  • 6. Visualize the filter kernels
  • 7. Interpretation
  • 8. Spectral effect on a GRACE solution
• Compute Terrestrial Water Storage anomalies from GRACE-FO data
  • 1. Load the necessary python modules
  • 2. Load the sample data from the tarball (making use of the tables in the sqlite file)
  • 3. Create anomalies by subtracting the static gravity field from the monthly solutions
  • 4. Convert to Terrestrial Water Storage
  • 5. Grid to a global grid and make a quick visualization of a certain month
  • 6. Filtering of GRACE
  • 7. Visualize Time Series
  • 8. Interpretation
• Create spherical harmonic coefficients from an ocean mask
  • 1. Obtain a (fine ocean grid)
  • 2. Convert the ocean grid to spherical harmonic coefficients
  • 3. Convert the resulting spherical harmonic coefficients back to a grid and visualize the result
  • 4. Write the results together with the input grid to the original netcdf file
• Convert Geopandas GeoSeries to spherical harmonics
  • 1. Preparations
  • 2. Get a set of Antartic grounded drainage basins (as polygons) to use as continental loads
  • 3 Convert the drainage outline to spherical harmonics of the desired degrees
  • 4 Check if the intermediate drainage basin results made sense
  • 5 What about the conversion of geometry points?
  • 6 Create a visualization of all the disk loads together
• Apply a spectral sea level equation solver to Antarctic drainage basin outlines
  • 1. Preparations
  • 2. Get a set of Antartic grounded drainage basins to use as continental loads
  • 3 Set up the sea level solver
  • 4 plot the sealevel equation components of all the drainage basin loads combined (a uniform Antarctic load)
  • 5 Plot the contribution for a specific basin