Package: varunayan 0.2.0

varunayan: Download and Process ERA5, IMD, HadEX3 and CRU TS Climate Data

Download and process climate data for custom geographical regions defined by bounding boxes, 'GeoJSON' polygons, or point coordinates. Supports the fifth generation European Centre for Medium-Range Weather Forecasts atmospheric reanalysis ('ERA5'; Hersbach et al. (2020) <doi:10.1002/qj.3803>) from the 'Copernicus' Climate Data Store (CDS) <https://cds.climate.copernicus.eu/>, India Meteorological Department (IMD) gridded rainfall and temperature (Pai et al. (2014) <doi:10.54302/mausam.v65i1.851>), Hadley Centre global land climate extremes indices version 3 ('HadEX3'; Dunn et al. (2020) <doi:10.1029/2019JD032263>), and Climatic Research Unit gridded Time Series ('CRU TS'; Harris et al. (2020) <doi:10.1038/s41597-020-0453-3>). Also computes heat stress indices including heat index, wet-bulb temperature, outdoor wet-bulb globe temperature (Liljegren et al. (2008) <doi:10.1080/15459620802310770>) and the Universal Thermal Climate Index (Bröde et al. (2012) <doi:10.1007/s00484-011-0454-1>), and heat exposure indicators for health studies: heatwave and warm-night frequency and duration under India Meteorological Department and percentile definitions, the Excess Heat Factor (Nairn and Fawcett (2015) <doi:10.3390/ijerph120100227>) and diurnal temperature range.

Authors:Saket Choudhary [aut, cre, cph], Darakhshan Nehal [aut]