Global Water Resource Data Archive

Introduction

In 2000, Mr. Saruhashi (Master course student in our labo) made his master thesis which deals global water resource. This archive contains his achievement (data, table and figures) as well as updated analysis results after his graduation.

Basically he calculated river discharge globally in 0.5degree x 0.5degree grid cells by using TRIP(river network dataset), STRIP( river flow calculation program using TRIP) and GSWP result of runoff from each grid cells.

Moreover, the withdrawal by agriculture, industry and urban life was estimated for 0.5*0.5 grid cells globally.

Then these two results are compared to investigate region where water resource is in high stress.

Moreover, using GCM x2CO₂ experiment result and population growth scinario, the same estimation was performed for 2050 situation.

Original full text of his master thesis (in Japanese) is opened to public by PDF. But please be careful since the file size is more than 50MB...

Related references:

• Current Analysis on World Water Resources published as;

  Taikan Oki, Yasushi Agata, Shinjiro Kanae, Takao Saruhashi, Dawen Yang, and Katumi Musiake, Global Assessment of Current Water Resources using Total Runoff Integrating Pathways, Hydrol. Sci. J., 46, 983-996, 2001.

• Future Analysis on World Water Resources submitted as:

  Taikan Oki, Yasushi Agata, Shinjiro Kanae, Takao Saruhashi, and Katumi Musiake, Global Water Resources Assessment under Climatic Change in 2050 using TRIP, IAHS Publication, 2003.

programs and file format

1. programs and file format
2. File Name Convention and Metadata

Used Data

1. Base Map
    
2. Global Grid
   1. CIESIN population data： 2.5-min， 0.5-deg，
   
    
3. country-based data
   1. UN Population projection, Rev. 2002
   
    
4. drainage-basin-based data

Calculation result for 1995

1. Global Grid
   1. Monthly
      1. Runoff from each grid cells
         • GSWP1
         • GSWP2-B0-CT-1
      2. Irrigation water demand of each grid cells estimated by global EPIC (by Dr. Tan)
      3. Irrigation water requirement estimated by global EPIC (by Dr. Tan), version 20021007b
   2. Annual
      1. Annual Discharge etc.
         • GSWP1(GSWP1)
         • GSWP2-B0-CT-1
      2. Artificial Water Supply
      3. Water Use
      4. Water Stress(GSWP1)
      5. Water Stress(GSWP2)
2. Drainage-basin-based
1. Annual
   1. Water Use
3. Country-based

Other files

1. CPT files
2. 0.5 degree TRIP data

Links

• Institutes / Organizations / Laboratories
  • Water Systems Analysis Group, Univ. of New Hampshire (UNH, Prof. Charles Vörösmarty)
  • IWMI : Int'l Water Management Institute, Colombo, Sri Lanka
  • World Resources Institute(WRI) ( >>EarthTrends >> Freshwater Resources and Withdrawals )
  
   
• Datasets
  • Gridded Population of the World by CIESIN(USA)
  • World Population Project by IIASA(Austria)
  • Digital map of Irrigated Areas by Prof. Petra Döll, Center for Environmental Systems Research, Kassel Univ., Germany
  • Population Information Network(POPIN) by UN
  • FAOSTAT : Statistical Database by FAO
  • TRIP- Digital river channel network dataset (1-deg, 0.5-deg), by Prof. Oki
  • GTOPO30- 30-arc second grid dataset of global elevation by USGS. Mirror site in Japan is also available.
  • HYDRO1K- Some datasets derived from GTOPO30 made by USGS, including river channel, drainage basins and ancillary layers.
  • SRES Country-Base Dataset- Country-base dataset of future population and GDP (1990-2100, every 5 years). Distributed by CIESIN.
  • SRES Dataset- Dataset of future population and GDP. Described for ALL SRES scinarios. Four region in the World.
  • GEO Data Portal- UNEP Global Environmetal Outlook Dataset. More than 400 variables are available.
  
   
• Models
  • EPIC model - from BRC (Blackland Research and Extension Center), The Texas A&M University System Agriculture Program
  
   
• On-line news on global water resource science
  • Irrigaiton moves rain. from Nature Science Update. 2008Aug26.