Phase V:

Illustrations

Participants

Phase V (2007-2009)

In this proposal and three related proposals, the HK project seeks funding for four multidisciplinary fully-coordinated projects to initiate formulation and tests of SSSON in RET, and expand the stream-flow and rain gauge density for tests of SSSON in peak flows on hourly to daily timescales. The main field campaign is being planned for the summer of 2007. The GIS-based watershed analysis and modeling tool will be enhanced to include coupling among subsurface flow, stream flow and RET, and the impact of the many human-constructed ponds in the basin. A new allometric model of tree growth will be developed to detect hydroclimatic variability on Strahler streams of different orders on annual to decadal time scales.

Topic Coupled Processes on Links Coupled Processes on Network
Water balance estimation of RET Atmospheric field campaign Ecological coupling Coupled network theory of floods
PI Name Rajaram Grossman Milne Gupta
Time scale, resolution 15 min, hourly to seasonal 1-30 min, daily to weekly 1 year, annual 15 min, hourly to seasonal
Spatial scale 100 m, 4th or 5th order link-hillslope 100 m, 4th or 5th order link-hillslope 100 m to 50 km, Strahler order streams 100 m to 50 km, Strahler order streams
Processes, instruments, tools Riparian vegetation at single link-hillslope

Soil-moisture and groundwater-head sensors

Direct-push technology

Numerical simulations
Riparian vegetation at single link-hillslope

Aircraft

Power parachute

Raman lidar
Allometric tree growth

Multiyear resource use

Coupled carbon & water
Conservation laws

Space-time rainfall

Hydraulic geometry

Streamflow gauges

Weather radar

Numerical simulations
Goals RET from a single link-hillslope estimated as a closure term in water balance Direct estimation of RET from a single link-hillslope Spatial nonlinearity

Budget closure for annual RET

Decadal RET
Flood prediction

RET prediction