Co Chairs
Carol Johnson
NIST, USA
carol.johnson@nist.gov
Giuseppe Zibordi
giuseppe.zibordi@eoscience.eu
Background
Ocean colour system vicarious calibration (OC-SVC) is a fundamental requirement for all ocean colour missions in order to meet the stringent accuracy requirements for radiometric products and all downstream bio-optical products. This group used to be an IOCCG WG on Long-term vicarious adjustment of OC sensors. In 2020 IOCCG recommended the establishment of the OC-SVC Task Force, supported by a recommendation from the INSITU-OCR White Paper.
OC-SVC infrastructures are important for space agencies who aim to maintain or establish new infrastructures, e.g., NOAA MOBY, NASA PACE, ESA Boussole, FRM4SOC etc. OC-SVC are highly specialized and very expensive so it is useful to have coordination across the agencies for lessons learned and methodologies.
Initial membership was based on agency members as well as other members who were previously engaged in the previous working group.
Members
Aga Bialek (NPL)
Andrew Barnard (Oregon State Uni.)
Brian Barnes (USF)
Bryan Franz (NASA)
Christophe Lerebourg (ACRI-ST)
Constant Mazeran (SOLVO)
David Antoine (Curtin Uni.)
Ewa Kwiatkowska (EUMETSAT)
Frederic Melin (JRC)
Hiroshi Murakami (JAXA)
K. N. Babu (ISRO)
Ken Voss (U. Miami)
Marie-Helene Rio (ESA)
Menghua Wang (NOAA)
Nigel Fox (NPL)
Shuguo Chen (OUC)
Susanne Craig (NASA)
Young-Je Park (KIOST)
Brief Summary Report of Workshop, 2-3 December 2013, ESRIN, Italy
Welcome – Ewa Kwiatkowska (Chair, EUMETSAT)
Session 1: Current status
VIS vcal site and source characterization, uncertainties
Vical application in ocean colour processing (NIR and VIS vcal, sites, sources, protocols, implementation in the processing chain)
- NASA (Bryan Franz)
- KOSC/KIOST (Seongick Cho)
- ISRO (Ashok Shukla)
- ESA (Constant Mazeran)
Remaining uncertainties
- Analysis of current biases among missions (Fred Melin)
- Impact of instrument calibration and instrument characterization, pre-launch and on-orbit (Gerhard Meister)
- Results from other statistical techniques (Bertrand Fougnie)
Session 2: NIR methodology and recommendations towards standardization
- NIR vcal methodology: black pixel assumption, atmospheric model, aerosol spectral slope, band assumptions (Jean-Paul Huot)
- SWIR vcal (Menghua Wang )
- Role of aerosol measurements (Ewa Kwiatkowska)
Session 3: VIS methodology and recommendations towards standardization
- Vcal requirements for OCR-VC, standardization, data policy (Menghua Wang)
- VIS vcal requirements on in situ data sources, site requirements, site selection, data quality (Giuseppe Zibordi)
- Vcal regional specifics (Seongick Cho )
Session 4: Operational mission needs
- Vcal requirements for operational services, how to achieve operational status early (Ewa Kwiatkowska)
- NIR vcal approach early in the mission: sites, data quality, targeted satellite acquisitions (Jean-Paul Huot)
- VIS vcal approach early in the mission: sites, data quality, targeted satellite acquisitions (Menghua Wang)
Session 5: Advancing as a community: vision for the future of vicarious calibration and international cooperation
- Funding and upgrading of existing vcal infrastructure (Ken Voss)
- Vision for the future of vcal, concepts for instrumentation, infrastructure, site locations (David Antoine)
- International cooperation, coordination, and data sharing (Seongick Cho, Ashok Shukla, Menghua Wang, Bryan Franz, Philippe)
The fifth International Ocean Colour Science (IOCS) meeting will take place in St. Petersburg, FL, USA from 14 – 17 November 2023, and will be convened by the International Ocean Colour Coordinating Group (IOCCG) in partnership with the University of South Florida, and thanks to sponsorship from several sponsors.