Description
This indicator outlines persistent anomaly conditions of low precipitation, as discrete events in space and time, at the global scale and at near real-time, every ten days.
By providing information on the duration and spatial extent of droughts, it allows for a structured and well-defined analysis of individual droughts, e.g. to follow evolution in space-time, to associate impacts, to link with other natural hazards, to search for patterns, etc.
Derived from the ERA5 (fifth generation) reanalysis, drought events are identified with a three-dimensional density-based clustering algorithm (DBSCAN) on SPI-3.
Events are classified as "consolidated" if their outline at a given ten-day period is stable through updates, or "provisional", when the spatio-temporal outline is likely to change with further updates.
The technical details describing the methods for the computation of the indicator can be found in Cammalleri, et al. An event-oriented database of meteorological droughts in Europe based on spatio-temporal clustering. Sci Rep 13, 3145 (2023).
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| Data download URL | JSON |