Drought Area Index (RDAI)
• daily series,
• drought affected proportion of the area within one region,
total area = sum of catchment areas in the region,
barb2rightRDAI: 0 – 1.
CES conference, Oslo, Norway, 31 May - 2 June 2010
Regional drought definition
• RDAI > 0.7
Anne K. Fleig et al. “Regional hydrological droughts and weather types in north-western Europe “
University of Oslo Droughts
/media/ces/AnneFleig_May2010_CES.pdf