Is The Dry Getting Drier?
2 days ago Willis Eschenbach 107 Comments
Guest Post by Willis Eschenbach
So I was wandering through the marvelous KNMI website, and I came across data for the Palmer Self-Correcting Drought Severity Index. This is an index that measures the drought conditions in some given area. The source website says:
The scPDSI (self-correcting Palmer Drought Severity Index) is a variant on the original PDSI of Palmer (1965), with the aim to make results from different climate regimes more comparable. As with the PDSI, the scPDSI is calculated from time series of precipitation and temperature, together with fixed parameters related to the soil/surface characteristics at each location.
Now, the KNMI site only offers linear trends of data. But if you look at the bottom of the KNMI page linked above, or other pages at that level of inquiry, you’ll find that there is an option to download the NetCDF version of the data. As in this case, this NetCDF data is often gridded.
And using that NetCDF gridded file lets me make a graphic showing the average scPDSI for the globe.
https://wattsupwiththat.com/2023/07/16/is-the-dry-getting-drier/
