AOGS

1
IAHS Decade on Predictions in Ungaged Basins,
PUB (2003-2012)
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2
Thematic WGs National WGs
Chair Jeff.J. McDONNELL (2005-2007) Theme 1.
Basin inter-comparison and classificationRoss
Woods, NZ Marc Stieglitz, USA Günter Blöschl,
Austria Theme 2. Conceptualization of process
heterogeneityStefan Uhlenbrook, The Netherlands
Chris Soulsby, UK Simon Lorentz, South
Africa Theme 3. Uncertainty analyses and model
diagnosticsThorsten Wagener, USA Jim Freer, UK
Erwin Zehe, Germany Theme 4. Develop and use of
new data collection approaches Huub Savenije,
The Netherlands Witold Krajewski, USA John
Gibson, Canada Theme 5. New hydrological
theory Peter Troch, The Netherlands Jim
Kirchner, USA Louise Heathwaite, UK Theme 6.
New  model approachesDavid Post, Australia
Barry Croke, Australia John Pomeroy, Canada
Theme 7. National Working Groups and PUB Tech
TransferIan Littlewood, UK Yasuto TACHIKAWA,
Japan Chris Spence, Canada
Secretariat IWMI at Sri Lanka http//pub.iwmi.org

• Chinese PUB
• Japan PUB
• Korean PUB
• Nepalese PUB
• Thai PUB

3
Climate, Topography, Land use, Water Use, Scale,
Available Data are quite different.
Knowledge, Information, Methods, Models in Gauged
Basins
Trans-Regional Hydrological Models
Hydrologic Predictions in Ungauged Basins
4
Expanding Network of PUB

• UNESCO IHP FRIEND/HELP/PUB collaboration
  agreement, May 2004
• WMO IHWRP CHy, Oct 2004 IAHS/PUB presented
• IAHS Decade on Predictions in Ungauged Basins
  (PUB), 2003-2012 Shaping an Exciting Future for
  the Hydrological Sciences, HSJ Vol. 48 (6),
  857-880, 2003
• EOS 85(44) 451, 457, 2 Nov. 2004 T. Wagner et
  al., Predictions in ungaged basins as a catalyst
  for multidisciplinary hydrology
• 4th World Water Forum in Mexico City, March 2006
• From Space to Earth Building an alliance to
  provide essential data co-convened by IAHS, IWA,
  WMO, UNESCO, ESA, NASA ...
• PUB WGs activities (JPN, AU, UK, Italy, USA,
  Canada, Korea (28 Oct, 2005), China (Nanjing, 30
  Oct-1 Nov, 2005, Beijing, 28-30 Sep, 2006), Thai,
  Sri Lanka, Nepal (Pokhara, 17-19 Apr, 2006) etc.)
• AGU, EGU, AOGS (Singapore, 10-16 July, 2006),
  CUAHSI, APHW (Bangkok, 16-18 Oct, 2006),
  GEWEX/WRAP, CEOP, MAHASRI and GEOSS

5
Theme 1. Basin inter-comparison and
classificationRelating hydrologic diversity to
landscape elements to establish a realistic PUB
model
Theme 2. Conceptualization of process
heterogeneityRelating hydrologic diversity to
landscape elements to establish a realistic PUB
model
Theme 3. Uncertainty analyses and model
diagnostics Establishment of an assessing method
for hydrologic model performance through a
development of uncertainty evaluation indices
Theme 4. Develop and use of new data collection
approachesDam reservoir operation monitoring
with remote sensing for large scale hydrologic
modeling
Theme 5. New hydrological theory Estimating
frequencies of hydrologic extreme events in
ungauged basins by using scaling,
regionalization, and historical record analysis
Theme 6. New  model approachesGlobal-scale
hydrological modeling considering interaction
between natural variation and anthropogenic
activities, and Downscaling of global hydrologic
information for local scale watershed managements
in ungauged basins
Theme 7. National Working Groups and PUB Tech
TransferJapan PUB
6

Gauged Basin
Establishment of an assessing method for
hydrologic model performance through a
development of uncertainty evaluation indices
Estimating frequencies of hydrologic extreme
events in ungauged basins by using scaling,
regionalization, and historical record analysis
Human Activity
Local Scale
Global Scale
Relating hydrologic diversity to landscape
elements to establish a realistic PUB model
Global-scale hydrological modeling considering
interaction between natural variation and
anthropogenic activities, and Downscaling of
global hydrologic information for local scale
watershed managements in ungauged basins
Dam reservoir operation monitoring with remote
sensing for large scale hydrologic modeling
Ungauged Basin