Mapping agricultural drought hazard

N/A

Monthly precipitation converted to weekly precipitation values.

eng

N/A

Not relevant

Mapping agricultural drought hazard

Data requirements to use: Monthly precipitation converted to weekly precipitation values.;

Data used: N/A;

Data format: N/A;

Data access: N/A;

Concise description:

A precipitation-based index in which the actual precipitation measured is compared with normal values during the growing season. Mean precipitation for each week is calculated and a running eight-week average of measured average precipitation is summed and compared. If the actual precipitation is greater than 60% of the normal precipitation for the eight-week period, then the current week is assumed to have little or no water stress. If stress is detected, it remains until the actual precipitation is at 60% or more of normal.

eng

NOAA Drought Index (NDI)

ISO 19115:2003/19139

1.0

http://www.droughtmanagement.info/indices/