SPEI (R package)
The reference R implementation of SPEI and SPI from the index's own authors.
Neyman-Scott stochastic rainfall generation in Python — synthetic series and disaggregation, single or multi-site.
by IHCantabria
Install
pip install NEOPRENENEOPRENE (Neyman-Scott Process Rainfall Emulator), from IHCantabria (Javier Diez-Sierra, Salvador Navas, Manuel del Jesus), implements the Neyman-Scott Rectangular Pulses model for synthetic rainfall: calibrate to observed statistics, then generate arbitrarily long single-site (NSRPM) or spatially consistent multi-site (STNSRPM) rainfall series that preserve the extremes and intermittency structure design work cares about.
Its natural jobs are continuous-simulation inputs longer than the observed record, temporal disaggregation, and stochastic downscaling of climate scenarios. GPL-3 licensed with notebook-based examples, and unusually approachable for this class of model — there are even packaged installers with JupyterLab bundled.
Other climate & change analysis tools covering similar workflow stages.
The reference R implementation of SPEI and SPI from the index's own authors.
EPA's Climate Adjustment Tool for SWMM — apply downscaled climate projections to rainfall and evaporation inputs.
Programmatic access to ERA5 and the Copernicus Climate Data Store — the world's reanalysis workhorse.
Reference Python implementations of SPI, SPEI and Palmer indices for drought monitoring.
Statistical downscaling and bias correction of climate projections in R — part of the climate4R framework.
Climate indices and bias adjustment on xarray — the operational-grade library for climate-data engineering.