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Catchment Monitoring for Scaling and Assimilation of Soil Moisture and Streamflow C. Rüdiger a, R.E. Davidson b, H.M. Hemakumara b, J.P. Walker a, J.D.

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Presentation on theme: "Catchment Monitoring for Scaling and Assimilation of Soil Moisture and Streamflow C. Rüdiger a, R.E. Davidson b, H.M. Hemakumara b, J.P. Walker a, J.D."— Presentation transcript:

1 Catchment Monitoring for Scaling and Assimilation of Soil Moisture and Streamflow C. Rüdiger a, R.E. Davidson b, H.M. Hemakumara b, J.P. Walker a, J.D. Kalma b, G.R. Willgoose c, and P.R. Houser d a Dept. of Civil & Env. Eng., University of Melbourne, Australia b School of Engineering, University of Newcastle, Australia c School of Geography, University of Leeds, United Kingdom d Hydrological Sciences Branch, NASA GSFC, USA

2 Christoph Rüdiger MODSIM03 Overview Applications of soil moisture data Remote sensing of soil moisture Field site description Future work

3 Christoph Rüdiger MODSIM03 Soil Moisture? What for? Drought monitoring Flood prediction Irrigation policies Weather forecasting

4 Christoph Rüdiger MODSIM03

5 Christoph Rüdiger MODSIM03 New Methods and Approaches New Methods: Downscaling of low resolution measurements Estimation of root zone soil moisture from satellite measurements Estimation of soil moisture under dense vegetation Approaches: Development of algorithms for downscaling Assimilation of surface soil moisture data for retrieval of root zone soil moisture Assimilation of streamflow data for soil moisture estimates

6 Christoph Rüdiger MODSIM03 Field Site Goulburn River Catchment (NSW) –Proximity to Newcastle –Size and geophysical properties –Cleared areas –Division into 4 subcatchments –Distance to the sea

7 Christoph Rüdiger MODSIM03 Vegetation and Soils 50km 40km

8 Christoph Rüdiger MODSIM03

9 Christoph Rüdiger MODSIM03 Instrumentation Installation of … –2 weather stations and several pluviometers –26 soil moisture monitoring sites –1 flume and 5 stream gauges Use of … –3 existing weather stations –3 stream gauges –numerous rain gauges

10 Christoph Rüdiger MODSIM03 Installation of Soil Moisture Sensors

11 Christoph Rüdiger MODSIM03 Weather StationsProject Stream Gauges Location of Instrumentation Soil Moisture SitesDIPNR Stream Gauges Subcatchments Microcatchment

12 Christoph Rüdiger MODSIM03 AMSR-E Sampling Procedure 4 Teams 1 1 1 1 1 1 1 1 1 1 1 1 3 Days (5 times) –Day 1 21 21 12 21 21 12 21 21 12 21 21 12 –Day 2 (AMSR-E) 213 321 132 213 321 132 213 321 132 213 321 132 –Day 3 Samples –10-15/box (6.6 x 8.3 km) –120-180/day –1cm and 6cm moisture –soil, vegetation, rocks –GPS coordinates

13 Christoph Rüdiger MODSIM03 Future Applications of the Data Collected data will be used for … –Scaling purposes –Soil moisture data assimilation into an LSM –Streamflow data assimilation into an LSM –AMSR-E validation

14 Christoph Rüdiger MODSIM03 Acknowledgments Australian Research Council (ARC-DP grant 0209724) National Aeronautics and Space Agency (NASA), USA National Institute for Water & Atmospheric Research (NIWA), New Zealand

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