Catchment Monitoring for Scaling and Assimilation of Soil Moisture and Streamflow
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Transcript of Catchment Monitoring for Scaling and Assimilation of Soil Moisture and Streamflow
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
Christoph RüdigerMODSIM03
Overview
• Applications of soil moisture data
• Remote sensing of soil moisture
• Field site description
• Future work
Christoph RüdigerMODSIM03
Soil Moisture? What for?Drought monitoring
Flood prediction
Irrigation policies
Weather forecasting
Christoph RüdigerMODSIM03
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
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
Christoph RüdigerMODSIM03
Vegetation and Soils
50km
40km
Christoph RüdigerMODSIM03
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
Christoph RüdigerMODSIM03
Installation of Soil Moisture Sensors
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
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
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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
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
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