Walker, Merlin, Panciera, Kalma and Hacker

NAFENAFENational Airborne Field National Airborne Field

ExperimentExperiment

22ndnd Workshop – 13-14 Feb 2006 Workshop – 13-14 Feb 2006

www.nafe.unimelb.edu.auwww.nafe.unimelb.edu.au

Walker, Merlin, Panciera, Kalma and Hacker

Welcome

Jeffrey Walker, Olivier Merlin and Rocco PancieraDept of Civil and Env Engg

The University of Melbourne, Australia

Jetse KalmaSchool of Civil, Surveying and Env EnggThe University of Newcastle, Australia

Jorg HackerAirborne Research AustraliaFlinders University, Australia

Walker, Merlin, Panciera, Kalma and Hacker

Background

• Campaigns are not planned as big integrated and highly structured campaigns (such HAPEX etc.) with unified themes.

• Campaigns are designed to give people access to airborne monitoring and ground-based monitoring data in return for contributing to ground-based monitoring programs.

• Each participant would be expected to sign up for at least 2 weeks and contribute 50% of their time to soil moisture monitoring program (i.e. mornings or afternoons)

Walker, Merlin, Panciera, Kalma and Hacker

Purpose of Today

• What are your science questions and data needs?

• What is the best study are to address these diverse needs – Goulburn, Murrumbidgee, Other?

• What ground monitoring plan will best address these needs?

• What flight pattern and instruments will best address these needs?

Walker, Merlin, Panciera, Kalma and Hacker

Our Questions• Spatial, temporal and accuracy

requirements for satellite missions

• Development and validation of passive microwave algorithms – AMSR-E/SMOS/ Hydros – scaling, multiangle, etc

• Downscaling of low resolution passive microwave soil moisture measurements using high resolution visible/thermal data and/or radar (ie Hydros)

• Retrieval and validation of derived root zone soil moisture from the assimilation of near-surface measurements

Walker, Merlin, Panciera, Kalma and Hacker

Our Ground Requirements• Long-term monitoring of soil moisture profiles

and associated meteorological data• for modelling and evaluation of root zone soil moisture

• Extensive ground-based measurement of near-surface soil moisture and ancillary data (veg water, roughness etc) across individual farms at during airborne monitoring campaigns • for aircraft validation and scaling, algorithm

development, downscaling and mission requirements

• Continuous near-surface soil moisture, soil temperature, and thermal infrared logging at focus farms • for relating air/ground measurements

Walker, Merlin, Panciera, Kalma and Hacker

Our Air Requirements• Fly with passive microwave, thermal and NDVI scanner

• would also like lidar scan and digital photography (once)

• Air measurements coinciding with ground measurements, as early in the morning as possible• soil and veg temperatures are more closely aligned• more uniform soil temperature profile• Hydros/SMOS have 6am/pm overpass; AMSR-E has 1am/pm

overpass

• Fly at a range of altitudes to achieve a range of ground resolutions • provides data for scaling, root-zone, algorithm

development/validation and mission requirements• 50m at 500ft (farms) to 1km at 10,000ft (regions) for microwave• 1m at 500ft to 20m at 10,000ft for thermal & NDVI

• Fly farms with instrument in multiangle configuration• Provides data for SMOS algorithm development

Session 1: What are the questions and requirements

of our collaborators?

Walker, Merlin, Panciera, Kalma and Hacker

Some Absentee Interests• Marc LeBlanc and Sarah Tweed, Monash Uni

• What science questions you would like to address: Groundwater application, for example testing the SEBS ET algorithm and determine the groundwater application from soil moisture and other datasets. 

• What data you need to answer them: map of thermal, NDVI, meteorological data, groundwater monitoring data

• John Hornbuckle, CSIRO• extensively monitored irrigated vineyard in the

Murrumbidgee Irrigation Area near Griffith – spatial soil and canopy NDVI/leaf temp measurements, enviroscans, bowen ratio energy balance systems etc and would be interested in doing some comparison work