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We hope to see you at Ocean Optics Conference XXVI 2024
Please join us for our exhibition at the Ocean Optics Conference XXVI in Las Palmas De Gran Canaria, Spain, from October 6-11, 2024.
Overview
The Ocean Optics Conference attracts a diverse audience of active practitioners in this field, including oceanographers, marine ecologists, limnologists, optical engineers, marine resource managers, and policy professionals from around the world. Conference presentations include the science of optics across all aquatic environments, research, and applications, including (but not limited to) biogeochemistry, environmental management and applications, instruments, techniques and observational systems, remote sensing, phytoplankton ecology, radiative transfer and optical theory, global change, and benthic processes. Attendees will attend plenary presentations during the day and interact with colleagues during scientific poster session receptions held in the exhibit/poster hall in the early evening. In addition to invited and contributed oral and poster presentations, the conference will provide the opportunity for community-wide discussions.
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Details:
- Location: Ctra. del Rincón, 35010 Las Palmas de Gran Canaria, Las Palmas, Spain
- Date: October 6 - 11
Poster Information:
ABSTRACT 795 | POSTER TH-106 - UNCERTAINTY BUDGET FOR SEA-BIRD SCIENTIFIC RADIOMETERS FOLLOWING CROSS-SITE CALIBRATION
- Poster Session 4: Thursday, October 10 | 11:10 - 13:00
In-situ and above water radiometers are critical for validating ocean color (OC) satellite measurements used to monitor in-water constituents of the global ocean. The calibration process, instrument response characterization, and environmental measurement effects all contribute to the overall uncertainty budget of the radiometric measurement. An integral part of this uncertainty traceability chain is accurate, NIST-traceable laboratory calibration of radiometric sensors used to validate OC products. In 2023, Sea-Bird Scientific transitioned the manufacturing of radiometric products from the Philomath, Oregon (WET Labs) facility to the Bellevue, Washington (Sea-Bird Electronics) facility. As part of this transition, the radiometer calibration facility was reproduced at the Bellevue site. To maintain accuracy, Sea-Bird Scientific conducted an extensive cross-facility set of round robin experiments to quantify uncertainties between our laboratories. At each site, four independent calibrations were performed with a secondary source (NIST-traceable FEL lamp and reflectance plaque) for a set of 10 internal sensors as well as 27 production radiometers covering radiance and irradiance variants of our hyperspectral (HOCR) and multispectral (OCR) radiometers. Relative percent differences in calibration scale factors between the two sites were kept within ±0.5% for reference radiometers. Repeatability (k=2) of calibrations was within ±0.8% (hyperspectral) and ±0.4% (multispectral). An overall uncertainty budget was comprehensively characterized by eight components consistent with the FRM4SOC FidRadDB database demonstrates that radiometric calibration uncertainty (k=2) was maintained at 3-4% or improved as part of the transition to the new facility. NIST-traceable uncertainties in FEL lamp irradiance and radiance plaque reflectance were the largest contributors.
Eric Rehm, Sea-Bird Scientific, USA, eric.rehm@gmail.com, https://orcid.org/0000-0002-8417-538X
Michael Dewey, Sea-Bird Scientific, USA, mdewey@seabird.com
Ryan Lamb, Sea-Bird Scientific, USA, rlamb@seabird.com
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