drought-supporting
WTs over previous n days (n = 1, 15, 30,
45, 60, 90, 120, ... 330).
Determination of the period of influence: dreg
90
45 little groundwater45
45
CES conference, Oslo, Norway, 31 May -
2 June 2010
210
60
45
60
highly productive
aquifers
moderately
productive
aquifers}90
210
60
60
Anne K. Fleig et al. “Regional hydrological droughts and weather types in north-western Europe
/media/ces/AnneFleig_May2010_CES.pdf