Calculate SPI using CHIRPS data
Remote Sensing
Research
Climate
NOTES - 1 Mar 2022 I have write a new and comprehensive guideline on SPI, you can access via this link <https://bennyistanto
NOTES - 1 Mar 2022
I have write a new and comprehensive guideline on SPI, you can access via this link https://bennyistanto.github.io/spi/
I explained in the previous blog post on how to calculate monthly SPI using daily IMERG data. This time I use CHIRPS, because I want to get higher resolution, more frequent monitoring (updated every dekad ~ 10days), and long-term historical data from 1981 – now.
CHIRPS data acquisition for SPI analysis
Example output
SPI 1, 2, 3, 6, 9, 12, 24, 36, 48, 60 and 72-month
SPI 3-month for Indonesia, March 2020
- WFP’s calculated SPI, based on IMERG
- WFP’s calculated SPI, based on CHIRPS
- BMKG, based on weather station. Link: https://www.bmkg.go.id/iklim/indeks-presipitasi-terstandarisasi.bmkg?p=the-standardized-precipitation-index-maret-2020&tag=spi&lang=ID
- Climate Engine, based on CHIRPS. Link: https://climengine.page.link/nTyi
Notes:
Thanks to Yanmarshus Bachtiar for CDO’s tips.