Release History¶

v0.3.0 (2026-06-27)¶

HadEX3 climate extremes (1901-2018) via hadex3_bbox, hadex3_geojson
CRU TS v4.07 monthly grids (1901-2022) via cru_ts_bbox, cru_ts_geojson
IMD gridded rainfall and temperature via imd_rainfall_bbox, imd_temperature_bbox, imd_rainfall_geojson, imd_temperature_geojson
IMD station registry via get_imd_stations
Country-level ERA5 temperature via get_era5_country_temperature
Heat stress indices: UTCI, WBGT, Heat Index, Humidex, wet-bulb temperature, mean radiant temperature
Risk category classifiers and calc_heat_indices convenience wrapper
Spatial aggregation to administrative boundaries or custom polygons
Download caching to skip redundant API calls
Convenience helpers: daily_summary, compute_wind_speed, compute_heat_index, compute_utci
Requires Python 3.10+ (dropped 3.9)
Tests for heat stress, HadEX3, CRU TS, IMD, country aggregation
Notebooks for heat stress, HadEX3, CRU TS, spatial aggregation, country temperature

Initial release of varunayan.

Core functionality: Download and process ERA5 climate data
Multiple input modes: Support for GeoJSON files, bounding boxes, and point coordinates
Variable support: All ERA5 single-level and pressure-level variables
Temporal aggregation: Hourly, daily, weekly, monthly, and yearly frequencies
Spatial filtering: Automatic filtering based on GeoJSON geometries
Command-line interface: Full CLI with three processing modes
Python API: Clean programmatic interface with era5ify_* functions