Global Water Resource Archive : Annual River Discharge by GSWP2 B0-1

TOP > RESULT > Global 0.5 grid > Annual > River Runoff > GSWP2

Data

Average

1. LSM output (10⁶m³) to River Channel
   ==>
2. TRIP River Discharge (10⁶m³) and height of runoff(mm. Area is obtained from Oki-Kanae method):
   ==>
3. Discharge Difference between GSWP1 and GSWP2 (10⁶m³)
   ==>
4. Change in River Discharge by double CO₂(10⁶m³: 2060 - 1990 (CCSR/NIES 2001 version)
   ==>
5. Estimated 2050 river discharge
   ==> (Now Printing)
6. TRIP River Discharge per capita (m³/person)
   ==>
7. Sigma-D : discharge from upstream (10⁶m³/year)
   ==>
8. Available River Discharge at each alpha
   ==>

Figures

Discharge : Each Year

LSM output into River Channel

Discharge : Unit is 10⁶m³/year.

Discharge : Average (1986-1995)

Discharge : Unit is 10⁶m³/year.

Change in River Discharge Between GSWP2-B0-1 and GSWP1

Height of Runoff (Average)

Height of Runoff : Unit is mm/year. Drainage Area is calculated by Oki-Kanae Method (See Basemap)

Change in River Discharge Between GSWP2-B0-1 and GSWP1

Change in River Discharge by Double CO₂ (CCSR/NIES AGCM 2001)

Difference in GCM-calculated river discharge between double CO₂ state and present(1990). Unit is 10⁶m³/year. This is NOT the difference between GCM output and observation.

Ratio of GCM-calculated river discharge under double CO₂ state to that of present(1990) state. Unitless. For gridcells where GCM river discharge in present condition is zero, the ratio is not calculated (filled with missing_value). This is NOT the difference between GCM output and observation.

Estimated river dischrage at 2050 : CCSR-NIES-AGCM result ver.1

Currently we are re-estimating future (2050 or 2060) river flow. There are mainly two methods: Q(future) = Q(now) + δQ (difference in Q. shown above) and Q(future) = Q(now) * f (ratio of Q, shown above))

'Diff' Method

'Ratio' Method

Diff. between two methods (Ratio method minus Diff method)

Estimated river dischrage at 2050 : MRI-GCM result ver.1 (2004Feb)

'Diff' Method

'Ratio' Method

Diff. between two methods (Ratio method minus Diff method)

River Discharge per capita

Unit is m³/person/year. TRIP version population data was used for 1995 calculation.

Discharge from Upstrem (Sigma-D)

Unit is 10⁶m³/year.

Available River Discharge for each Alpha

Unit is 10⁶m³/year.