Withdrawal to Availability Ratio
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Index of Water Risk
 Withdrwal to availability ratio

This is expressed as (W  S) / Q, where,
 W : Water demand
 S : Supply of desalinated water
 Q : Available water (river discharge etc.)
during a certain period, respectively. W is written in Withdrawal data, and Q is shown in Discharge data.
Larger value of this index means that area(grid cell) is under severer water stress. Value more than 0.4 is especially regarded as index of fatal water stress for human lives.
Data
 Withdrawal to Availability Ratio
 WtoA ratio for each alpha value:
 Accumulated Histogram of population under each wtoa values:
Figures
Withdrawal to Availability Ratio, R_{ws}(WRI version)
Modern(GSWP2, Irr1 method> 
2050(GSWP2, Irr1 method, CCSRNIES GCM result 1, Diff Method, Scinario4)
(Sorry, now under construction)

2050(GSWP2, Irr1 method, MRI GCM result 1 (2004Feb), Ratio Method, Scinario4) 
2050(GSWP2, Irr1 method, MRI GCM result 1 (2004Feb), Diff Method, Scinario4) 
Num of Years under Rws>=0.4 situation in 9 years in GSWP2
Change in Rws

Difference 
Ratio 
GSWP2,
WRI Irr1 method,
CCSRNIES GCM result 1,
Diff Method, Scinario4

GSWP2,
WRI Irr1 method,
MRI GCM result 1,
Ratio Method, Scinario4

GSWP2,
WRI Irr1 method,
MRI GCM result 1,
Diff Method, Scinario4

Withdrawal to Availability Ratio R_{ws}(D,I = WRI, Agri = EPIC real)
Withdrawal to Availability Ratio for each alpha value
For river discharge at each alpha, see Annual River Discharge page.
R_{ws} for each year