Mapping agricultural drought hazard

N/A

SSID, SPI

eng

N/A

Not relevant

Mapping agricultural drought hazard

Data requirements to use: SSID, SPI;

Data used: N/A;

Data format: N/A;

Data access: N/A;

Concise description:

The DWI is a drought aggregated index based on vegetation and precipitation anomalies. The best SSID-correlated SPI cumulating interval (1 or 3 months) is selected for each pixel. A meteorological drought warning is provided for those pixels presenting negative SPI and for which no vegetative growing season is yet detected (for these pixels, a blue palette are used in the map). Once the vegetative growing season begins, the interested pixels will be assigned to a different warning value if the calculated SSID, SPI, or both, are negative (amber to brown palette is used in the map). Where the vegetative growing season is ongoing and the SSID is negative, a negative SPI value entails an agricultural drought warning, while a positive SPI implies a vegetation stress warning. A negative SPI value during the vegetation season, with no detectable vegetation stress effects (i.e. positive SSID), produces a meteorological drought warning.

eng

Drought Warning Index (DWI)

ISO 19115:2003/19139

1.0

N/A