Withdrawal to Availability Ratio

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Index of Water Risk

Withdrwal to availability ratio
This is expressed as (W - S) / Q, where, 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

  1. Withdrawal to Availability Ratio
  2. W-to-A ratio for each alpha value:
  3. Accumulated Histogram of population under each w-to-a values:

Figures

Withdrawal to Availability Ratio, Rws(WRI version)

Modern(GSWP2, Irr-1 method>
2050(GSWP2, Irr-1 method, CCSR-NIES GCM result 1, Diff Method, Scinario4)
(Sorry, now under construction)
2050(GSWP2, Irr-1 method, MRI GCM result 1 (2004Feb), Ratio Method, Scinario4)
2050(GSWP2, Irr-1 method, MRI GCM result 1 (2004Feb), Diff Method, Scinario4)

Num of Years under Rws>=0.4 situation in 9 years in GSWP2

GSWP2, Irr-1, Thre=0.4

Change in Rws

Difference Ratio
GSWP2,
WRI Irr-1 method,
CCSR-NIES GCM result 1,
Diff Method, Scinario4
GSWP2,
WRI Irr-1 method,
MRI GCM result 1,
Ratio Method, Scinario4
GSWP2,
WRI Irr-1 method,
MRI GCM result 1,
Diff Method, Scinario4

Withdrawal to Availability Ratio Rws(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.

Rws for each year

AGATASHI