catchment monitoring for scaling and assimilation of soil moisture and streamflow
DESCRIPTION
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 - PowerPoint PPT PresentationTRANSCRIPT
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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
a Dept. of Civil & Env. Eng., University of Melbourne, Australiab School of Engineering, University of Newcastle, Australia
c School of Geography, University of Leeds, United Kingdomd Hydrological Sciences Branch, NASA GSFC, USA
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Christoph RüdigerMODSIM03
Overview
• Applications of soil moisture data
• Remote sensing of soil moisture
• Field site description
• Future work
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Christoph RüdigerMODSIM03
Soil Moisture? What for?Drought monitoring
Flood prediction
Irrigation policies
Weather forecasting
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Christoph RüdigerMODSIM03
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Christoph RüdigerMODSIM03
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
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Christoph RüdigerMODSIM03
Field Site
Goulburn River Catchment (NSW)– Proximity to Newcastle– Size and geophysical
properties– Cleared areas– Division into 4 subcatchments– Distance to the sea
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Christoph RüdigerMODSIM03
Vegetation and Soils
50km
40km
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Christoph RüdigerMODSIM03
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Christoph RüdigerMODSIM03
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
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Christoph RüdigerMODSIM03
Installation of Soil Moisture Sensors
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Christoph RüdigerMODSIM03
Weather Stations Project Stream Gauges
N
S
M
D
T
D M S
T
T
Solar Panel
Logger Box
Logger Box
TDR
TDR
Locationof Instrumentation
Soil Moisture SitesDIPNR Stream Gauges
Subcatchments
TemperatureRel. Humidity
Pluviometer Net radiometer
Wind speedWnd direction
2 x Heat Flux Plates
CS616
8 x CS T107
Solar radiation
Logger box
Solar panel
TDR
Microcatchment
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Christoph RüdigerMODSIM03
AMSR-E Sampling Procedure• 4 Teams
1
11
1
11
1
11
1
11
• 3 Days (5 times)– Day 1
21
211
2
21
211
221
211
2
21
211
2 – Day 2 (AMSR-E)213321132
213321132
213321132
213321132
– Day 3
• Samples– 10-15/box (6.6 x 8.3 km)
– 120-180/day– 1cm and 6cm moisture– soil, vegetation, rocks– GPS coordinates
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Christoph RüdigerMODSIM03
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
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Christoph RüdigerMODSIM03
Acknowledgments
• Australian Research Council (ARC-DP grant 0209724)
• National Aeronautics and Space Agency (NASA), USA
• National Institute for Water & Atmospheric Research (NIWA), New Zealand