How to calculate PET, SPI, SPEI and Palmer drought indices in Python? | Jalal | Research Society

In this tutorial, we'll demonstrate how to calculate various drought indices—PET, SPI, SPEI, and the Palmer Drought Severity Index—using Python. We'll walk through each index, showing how to gather and process the necessary data, implement the calculations, and interpret the results. Whether you're a climate scientist, researcher, or enthusiast, this guide will help you monitor and analyze drought conditions effectively using Python. Data download link: https://www.drought.gov/data-maps-too... Alternative link: https://github.com/monocongo/climate_... Documentation for indices calculation: https://climate-indices.readthedocs.i... Command line: #PET monthly process_climate_indices --index pet --periodicity monthly --netcdf_temp ./nclimgrid_lowres_tavg.nc --var_name_temp tavg --output_file_base ../results/nclimgrid_lowres --calibration_start_year 1951 --calibration_end_year 2010 #SPI daily process_climate_indices --index spi --periodicity daily --netcdf_precip ./cmorph_lowres_daily_conus_prcp.nc --var_name_precip prcp --output_file_base ../results/cmorph_lowres_daily_conus --scales 30 90 --calibration_start_year 1998 --calibration_end_year 2016 #SPI monthly process_climate_indices --index spi --periodicity monthly --netcdf_precip ./nclimgrid_lowres_prcp.nc --var_name_precip prcp --output_file_base ../results/nclimgrid_lowres --scales 6 12 --calibration_start_year 1951 --calibration_end_year 2010 #SPEI monthly process_climate_indices --index spei --periodicity monthly --netcdf_precip ./nclimgrid_lowres_prcp.nc --var_name_precip prcp --netcdf_pet ./nclimgrid_lowres_pet.nc --var_name_pet pet --output_file_base ../results/nclimgrid_lowres --scales 9 18 --calibration_start_year 1951 --calibration_end_year 2010 #Palmers monthly process_climate_indices --index palmers --periodicity monthly --netcdf_precip ./nclimgrid_lowres_prcp.nc --var_name_precip prcp --netcdf_pet ./nclimgrid_lowres_pet.nc --var_name_pet pet --netcdf_awc ./nclimgrid_lowres_soil.nc --var_name_awc awc --output_file_base ../results/nclimgrid_lowres --calibration_start_year 1951 --calibration_end_year 2010 My profile: https://researchsociety20.org/founder... ResearchGate profile: https://www.researchgate.net/profile/... Activities of Research Society: https://researchsociety20.org/our-act... English Corner of Research Society: https://researchsociety20.org/documen... Training Material Of Research Society: https://researchsociety20.org/trainin... My Facebook page:   / researcherjalal   The following important videos are recommended to watch: 1. Data analysis and plotting with NCL:    • Data analysis and plotting with NCL   2. Data analysis and plotting in Matlab:    • MATLAB   3. How to write a scientific paper:    • Scientific Paper writing   PET Calculation SPI Calculation SPEI Calculation Palmer Drought Index Python Drought Analysis Climate Data Analysis Environmental Monitoring Drought Assessment Climate Science Python Meteorology Python Tutorial #PETCalculation #SPICalculation #SPEICalculation #PalmerDroughtIndex #PythonDroughtAnalysis #ClimateDataAnalysis #EnvironmentalMonitoring #DroughtAssessment #ClimateSciencePython #MeteorologyPythonTutorial