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Catchment Monitoring for Scaling and Assimilation of Soil Moisture and Streamflow

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

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Catchment Monitoring for Scaling and Assimilation of Soil Moisture and Streamflow

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  1. Catchment Monitoring for Scaling and Assimilation of Soil Moisture and Streamflow C. Rüdigera, R.E. Davidsonb, H.M. Hemakumarab, J.P. Walkera, J.D. Kalmab, G.R. Willgoosec, and P.R. Houserd aDept. of Civil & Env. Eng., University of Melbourne,Australia bSchool of Engineering, University of Newcastle, Australia cSchool of Geography, University of Leeds, United Kingdom dHydrological Sciences Branch, NASA GSFC, USA

  2. Overview • Applications of soil moisture data • Remote sensing of soil moisture • Field site description • Future work

  3. Soil Moisture? What for? Drought monitoring Irrigation policies Flood prediction Weather forecasting

  4. 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

  5. Field Site Goulburn River Catchment (NSW) • Proximity to Newcastle • Size and geophysical properties • Cleared areas • Division into 4 subcatchments • Distance to the sea

  6. 40km 50km Vegetation and Soils

  7. 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

  8. Installation of Soil Moisture Sensors

  9. Locationof Instrumentation Weather Stations Project Stream Gauges Soil Moisture Sites DIPNR Stream Gauges Microcatchment Subcatchments

  10. 2 2 3 1 1 1 2 2 3 1 1 1 1 1 1 2 2 3 1 1 1 2 2 3 3 1 1 1 2 2 3 1 1 1 2 2 2 2 3 1 1 1 2 2 3 1 1 1 1 1 1 2 2 3 1 1 1 2 2 3 3 1 1 1 2 2 3 1 1 1 2 2 AMSR-E Sampling Procedure • 4 Teams • 3 Days (5 times) • Day 1 • Day 2 (AMSR-E) • Day 3 • Samples • 10-15/box (6.6 x 8.3 km) • 120-180/day • 1cm and 6cm moisture • soil, vegetation, rocks • GPS coordinates

  11. 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

  12. 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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