| agg | Aggregation using box-averaging |
| downscale | Downscale a precipitation field |
| fft2d | Compute spatial Fourier power spectrum |
| fitslope | Compute logarithmic slope of a spatial power spectrum |
| gaussianize | Gaussianize field using rank ordering |
| initmetagauss | Generate the spectral amplitudes for a metagaussian field |
| interpola | Interpolate field using nearest neighbors |
| lon_lat_fine | Linear interpolation of longitude and latitude vectors to higher resolution |
| mergespec | Spectral merging of a coarse field and of a fine field at a given wavenumber |
| metagauss | Generate a metagaussian field |
| rainfarm | Perform RainFARM downscaling |
| remapcon | Conservative remapping |
| rfweights | Derive weights from a fine-scale precipitation climatology |
| smoothconv | Smoothening using convolution with a circular kernel |