Scaling and Assimilation of Soil moisture and Streamflow SASMAS

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(No Transcript)
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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

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Subprojects

• Scaling Studies (Manju Hemakumara)

• Soil Moisture Data Assimilation (Riki
  Davidson)

• Streamflow Data Assimilation (Christoph
  Rüdiger)

• Satellite Data Validation (eg. AMSR-E) (all
  candidates)

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Areas of Application

• Climatic Modelling
• Flood Forecasting
• Agriculture

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Field Site

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

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Subcatchments
Stanley
Krui River
Merriwa River
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Surface conditions
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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

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Locationof Instrumentation
Weather Stations
Soil Moisture Sites
Stream Gauges
Future Stream Gauges
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Schematic of a Soil Moisture Site
30cm
Logger
T
0 - 30cm
30 60 cm
60 - 90cm
SM
SM
SM
30cm
60cm
75cm
CS616
Logger
backfilled soil
30cm
30cm
N
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Instrumentation
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Instrumentation
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Streamflow Data Assimilation

• Why the Focus on Streamflow Data
• Updating of Soil Moisture States
• Soil Moisture Estimation under Vegetation Canopy

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Streamflow 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

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Approach to Streamflow Modelling

• - Creating model
• - Synthetic study on model
• Application of Mahurangi (NZ) data sets
• Application of Goulburn data sets

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Acknowledgements

• Australian Research Council (Research Grant)
• NASA, Hydrological Sciences Branch
  (Instrumentation)