Scaling and Assimilation of Soil Moisture And

Streamflow (SASMAS)- Streamflow Data

Assimilation -Christoph Rüdiger, Jeffrey WalkerDept. of Civil & Environmental Engineering

The University of Melbourne

Jetse Kalma, Garry Willgoose, Riki Davidson, Manju Hemakumara

School of Engineering, University of Newcastle

Paul HouserHydrological Sciences Branch

NASA Goddard Space Flight Center

Ross WoodsNational Centre for Water Resources,

Christchurch

Christoph Rüdiger

SASMAS Willgoose Symposium

The aim of SASMAS

- Estimation of Spatial Distribution of Soil Moisture

- Estimation of Temporal Variation of Soil Moisture

- Scaling between Satellite Soil Moisture Productsand On-Site Point Measurements

- Connecting Soil Moisture Measurements with Streamflow Measurements

- Validation of AMSR-E data

Christoph Rüdiger

SASMAS Willgoose Symposium

Subprojects

- Scaling Studies (Manju Hemakumara)

- Streamflow Data Assimilation (Christoph Rüdiger)

- Soil Moisture Data Assimilation (Riki Davidson)

- Satellite Data Validation (eg. AMSR-E)

(all candidates)

Christoph Rüdiger

SASMAS Willgoose Symposium

Areas of Application

- Climatic Modelling- Flood Forecasting- Agriculture- …

Christoph Rüdiger

SASMAS Willgoose Symposium

Field Site

- Goulburn River Catchment- Proximity to Newcastle- Size and geophysical properties- Cleared areas- Division into 4 subcatchments

Christoph Rüdiger

SASMAS Willgoose Symposium

Subcatchments

Stanley

Merriwa RiverKrui River

Christoph Rüdiger

SASMAS Willgoose Symposium

Surface conditions

Christoph Rüdiger

SASMAS Willgoose Symposium

Instrumentation- Installation of …

- 2 weather stations and several rain gauges

- 26 soil moisture monitoring sites- 1 flume and 2 river gauges

- Use of …- 3 existing weather stations- 3 stream gauges

Christoph Rüdiger

SASMAS Willgoose Symposium

Locationof

Instrumentation

Soil Moisture SitesStream Gauges

Weather Stations

Future Stream Gauges

Christoph Rüdiger

SASMAS Willgoose SymposiumSchematic of a Soil

Moisture Site

0 - 30cm

30 – 60 cm

60 - 90cm

30cm

60cm

CS616

backfilled soil

Logger

30cm30cm

SMSM SM

N

Logger

T

30cm

75cm

Christoph Rüdiger

SASMAS Willgoose Symposium

Instrumentation

Weather Station at Spring Hill

Temperature Sensor

Soil Moisture Sensor

Christoph Rüdiger

SASMAS Willgoose Symposium

Instrumentation

Christoph Rüdiger

SASMAS Willgoose SymposiumStreamflow Data

Assimilation- Why the Focus on Streamflow

Data- Updating of Soil Moisture States- Soil Moisture Estimation under

Vegetation Canopy

Christoph Rüdiger

SASMAS Willgoose SymposiumStreamflow Data

Assimilation- How

- Gauging stations, flume, soil moisture sensors and satellite remote sensed data

- Implementing Streamflow Routing Model into Rainfall-Runoff Models

- Variational Approach- Ensemble Kalman Filter

Christoph Rüdiger

SASMAS Willgoose SymposiumApproach to Streamflow

Modelling- Creating model- Synthetic study on model- Application of Mahurangi (NZ)

data sets- Application of Goulburn data sets

Christoph Rüdiger

SASMAS Willgoose Symposium

Acknowledgements

- Australian Research Council (Research Grant)

- NASA, Hydrological Sciences Branch (Instrumentation)