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The IMOS radiometry task team

Curtin RSSRG and CSIRO (Land & Water Brisbane) have co-led the IMOS “Radiometry Task team” (RTT), form July 2016 to June 2017

The objective of the RTT was to perform activities that can ultimately improve usability (and re-usability) of IMOS radiometric data sets for research purposes as well as for validation of satellite ocean colour products. Improving usability essentially means improving the quality of the data sets, and improving re-usability means that data collection, processing protocols and associated uncertainties are well described.

Another objective was to develop a plan for the evolution of radiometric measurements in IMOS for the next decade as there have been other developments in optical instrumentation that Australia will need to adopt. 

The Lucinda Jetty Coastal Observatory, as equipped during the RTT work in November 2016
The Lucinda Jetty Coastal Observatory, as equipped during the RTT work in November 2016

These objectives were addressed through the following actions:

  1. Evaluate the degree of consistency among existing field-platform and sea-going radiometers used in the IMOS and the wider Australian bio-optical community, through dedicated laboratory and field experiments.
  2. If needed, propose actions to improve consistency among these instruments; the way they are deployed (protocols) and the way data are processed.
  3. Develop a plan for the evolution of IMOS radiometric measurements for the next decade.
Radiometers measuring downward sun irradiance
Radiometers measuring downward sun irradiance
Radiometers measuring radiance from the sea and reflected sky
Radiometers measuring radiance from the sea and reflected sky

RTT task team membership

• David Antoine
• Matt Slivkoff
• Charlotte Robinson
• Peter Fearns

RSSRG, Curtin University, Perth

• Thomas Schroeder

CSIRO Oceans and Atmosphere, Aquatic Remote Sensing, Brisbane

• Wojciech Klonowski

In situ Marine Optics, Bibra Lake

• Martina Doblin

C3 – Climate Change Cluster, University of Technology, Sydney

• Jenny Lovell
• Edward King
• Peter Thompson

CSIRO Oceans and Atmosphere, Hobart

• David Boadle
• Brett Baker

CSIRO Land and Water, Australian Tropical Science and Innovation Precinct, Townsville

• Elizabeth Botha

CSIRO Oceans and Atmosphere, Aquatic Remote Sensing, Brisbane, Dutton Park

• Nick Hardman-Mountford

CSIRO Oceans and Atmosphere, Marine Biophysics, Indian Ocean Marine Research Centre, Crawley

• Rob Johnson

Bureau National Operations Centre, Bureau of Meteorology, Hobart

• Nagur Cherukuru
• Arnold Dekker
• Tim Malthus
• Ross Mitchell

CSIRO Oceans and Atmosphere, Canberra

• Paul Van Ruth

South Australian Research and Development Institute – Aquatic Sciences, West Beach

Useful links

Publications

• Antoine D., T. Schroeder, E. Botha, N. Cherukuru, A. Dekker, M. Doblin, P. Fearns, N. Hardman-Mountford, R. Johnson, E. King, W. Klonowski, J. Lovell, T. Malthus, M. Slivkoff, P. Thompson, P. Van Ruth, The Australian Integrated Marine Observing System (IMOS) radiometry task team: a community effort towards improved field ocean colour measurements. Australia Integrated Marine Observing System (IMOS) Annual Planning Meeting, 14-16 February 2017, Perth. POSTER

• Antoine D., T. Schroeder, E. Botha, N. Cherukuru, A. Dekker, M. Doblin, P. Fearns, N. Hardman-Mountford, R. Johnson, E. King, W. Klonowski, J. Lovell, T. Malthus, M. Slivkoff, P. Thompson, P. Van Ruth, The Australian Integrated Marine Observing System (IMOS) radiometry task team: a community effort towards improved field ocean colour measurements. International Ocean Colour Science Meeting 2017, Lisbon, Portugal, 15-18 May 2017. POSTER

• Antoine D., T. Schroeder, E. Botha, N. Cherukuru, A. Dekker, M. Doblin, P. Fearns, N. Hardman-Mountford, R. Johnson, E. King, W. Klonowski, J. Lovell, T. Malthus, M. Slivkoff, P. Thompson, P. Van Ruth, The Australian Integrated Marine Observing System (IMOS) radiometry task team: a community effort towards improved field ocean colour measurements. ESA workshop on options for future European satellite OCR vicarious adjustment infrastructure for the Sentinel-3 OLCI and Sentinel-2 MSI series, 21 – 23 Feb. 2017 ESA/ESRIN, Frascati, Italy. TALK