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Probe use while upside down

Probe use while upside down. David McJannet & Aaron Hawdon. CSIRO Land and Water / Water for a healthy country. CosmOz Australian cosmic-ray soil moisture observing network. CosmOz - Australian cosmic-ray soil moisture observing network. http://www.marsdaily.com.

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Probe use while upside down

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  1. Probe use while upside down David McJannet & Aaron Hawdon CSIRO Land and Water / Water for a healthy country CosmOz Australian cosmic-ray soil moisture observing network

  2. CosmOz - Australian cosmic-ray soil moisture observing network http://www.marsdaily.com CosmOz - funded in 2010 through internal CSIRO budget 11 probes were purchased– last one installed June 2011 Developed collaborative network with Uni Tas, Uni NSW, Monash Uni, Charles Darwin Uni Co-located with other measurements e.g. flux towers, water balance, CalVal, crop growth Current funding: 0.75 full time person Cosmic-ray soil moisture measurements | David McJannet

  3. CosmOz monitoring locations Cosmic-ray soil moisture measurements | David McJannet

  4. Bit of geography... 80% live within 50 km (30 miles) of coast Cosmic-ray soil moisture measurements | David McJannet

  5. CosmOz setup Rain gauge Satellite link Solar panel Pressure sensor (temperature & humidity soon) Data logger Small concrete pad Neutron tube (moderated) Cosmic-ray soil moisture measurements | David McJannet

  6. Cosmic-ray soil moisture measurements | David McJannet

  7. The CosmOz network: Data delivery http://cosmoz.csiro.au/cosmoz/ Cosmic-ray soil moisture measurements | David McJannet

  8. Where are we up to? • All probes installed • Longest record – 2 yrs • Shortest record – 1.25 yrs • Very reliable - one cable failure and one probe replaced • Calibrations – Aiming for a wet and a dry calibration per site (at least) • 4 sites have 2+ calibrations • 6 sites have dry calibrations • Lattice water sampling currently underway • Data processing approaches defined and being implemented Cosmic-ray soil moisture measurements | David McJannet

  9. Observations and discussion points • Corrections • Pressure • Vapour • Dosage • Calibrations • Surface runoff • Probe corrections and data smoothing Cosmic-ray soil moisture measurements | David McJannet

  10. Corrections – Vapour pressure Weany Creek 2011 – Vapour Correction 10% Standard COSMOS correction applied Where possible we use local site data Plan to add Hydroinnova T & RH to each site Cosmic-ray soil moisture measurements | David McJannet

  11. Corrections – Atmospheric Pressure Weany Creek Probe Inspired by Marek’s Hurricane Sandy slide - Cyclone Yasi Category 5 cyclone - 285 km/h (180 m/h) Cosmic-ray soil moisture measurements | David McJannet

  12. Dealing with the aftermath... Cosmic-ray soil moisture measurements | David McJannet

  13. Corrections – Atmospheric Pressure Weany Creek Probe Corrections range by 20% Cosmic-ray soil moisture measurements | David McJannet

  14. Corrections – Cosmic-ray dose (discussion) CosmOz cut-off rigidity varies from 2 – 13 Originally extracted site specific dosage (kspc22.unibe.ch) but stopped in early 2012 Moved to data from NMDB.eu using Swiss station but found some issues after discussions with Marek... Cosmic-ray soil moisture measurements | David McJannet

  15. Corrections – Cosmic-ray dose Solar Flare Cosmic-ray soil moisture measurements | David McJannet

  16. Corrections – Cosmic-ray dose Up to 10% difference Solar Flare It does make some difference – which is more correct? For now CosmOz sticking with nearest Rigidity NMDB.eu site Keep in mind this could be important when the world ends on 21st Dec! Cosmic-ray soil moisture measurements | David McJannet

  17. Calibration of CosmOz probes 24 sampling points – 8 points in each of 3 concentric rings 3 depths at each point = 72 samples (0-5, 10-15, 25-30cm) Collect wet and dry soil calibration points Standard calibration function tuned to measurements using one free parameter Cosmic-ray soil moisture measurements | David McJannet

  18. Calibration – Weany Creek Cosmic-ray soil moisture measurements | David McJannet

  19. Cosmic-ray probe and lattice water Lattice water samples being prepared for ACTLABS For now using relationship between lattice water and clay content for Australian soils Cosmic-ray soil moisture measurements | David McJannet

  20. Calibration – Weany Creek Add in lattice water estimate Cosmic-ray soil moisture measurements | David McJannet

  21. Calibration – Tullochgorum Add in lattice water estimate Cosmic-ray soil moisture measurements | David McJannet

  22. Calibration – Robson Creek Add in lattice water ??? Is this a soil carbon effect? Cosmic-ray soil moisture measurements | David McJannet

  23. Calibration - Gnangara Soil almost pure silica sand Collected one wet calibration point (assume no lattice water) Applied calibration to whole time-series Cosmic-ray soil moisture measurements | David McJannet

  24. Calibration - Gnangara -ve! Standard curve fit not applicable (<2%!) Empirical fit and more data points required Cosmic-ray soil moisture measurements | David McJannet

  25. Weany Creek -case study Weany Creek Cosmic-ray soil moisture measurements | David McJannet

  26. Weany Cr - measurement depth and fluxes Infiltration Drainage and evaporation Water flux (mm) Cosmic-ray soil moisture measurements | David McJannet

  27. Discussion points – Probe corrections & Filtering At least 4 four probe types – is there a need for comparison of ‘standardised count’? i.e. San Pedro Cosmic-ray soil moisture measurements | David McJannet

  28. CosmOz future directions Cosmic-ray soil moisture measurements | David McJannet

  29. Future – South East Esk Sensor Web Smart irrigation project Balancing farmer, hydro-power and environment needs Measurements coupled with flow/rain prediction (1km grid, 6 hr) Near real-time decision making 3 cosmic-ray probes Cosmic-ray soil moisture measurements | David McJannet

  30. Future – Potential adopters • Apart from CSIRO and uni researchers the Bureau of Meteorology is a potential adopter • Bureau of Meteorology has interests in weather prediction and water balance accounting • Recent seminars given to demonstrate potential uses of cosmic-ray probes • Used combination of CosmOz and COSMOS progress • Lots of interest in applications from various groups...no commitments as yet...watch this space! • Hopefully you will hear more about CosmOz at future meetings Cosmic-ray soil moisture measurements | David McJannet

  31. David McJannet • Email David.McJannet@csiro.au CSIRO Land and Water / Water for a Healthy Country

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