A Multi-Depth Underwater Spectroradiometer for Validation of Remotely-Sensed Ocean Color and Estimation of Seawater Biogeochemical Properties, Phase I

Metadata Updated: February 28, 2019

Remote sensing of optical properties of coastal waters provides essential information for various scientific questions & applications as monitoring biological biomass & productivity, biogeochemical carbon cycling, pollution, ecosystem health. OKSI, with Scripps Institution of Oceanography, propose developing a novel submersible instrument that provides simultaneous multi-depth (0-10 m) measurements of upwelling & downwelling radiative fluxes in the UV-VIS-NIR at high spectral resolution. The measurements are needed to support ocean color algorithm development, validation, & application to remote sensing measurement for the retrieval of biochemical & optical ocean parameters. All electronics components will be above water & the submersible will require no power or electronics. In Phase I underwater radiative transfer analysis will be conducted to establish the science requirements & translate those into sensor design. The submersible sensor system will be designed and modeled to assure that it meets the science requirements of SNR, dynamic range, & spectral resolution. Calibration procedures will be established to assure high data quality. In Phase-II the prototype instrument will be built and tested at sea & data compared to other SIO instruments.
The proposed system will quantify the underwater downwelling irradiance and upwelling radiance through simultaneous measurements at several depths (plus the downwelling irradiance incident upon the sea surface), filling a major gap in technological capabilities for providing accurate light field determinations at the ocean surface from data taken within optically dynamic near-surface ocean layer. In this layer, the usage of commercial radiometers and common measurement strategies is typically inadequate. This proposed development will improve retrievals of remote-sensing reflectance and consequently information about in-water constituents/properties. The project outcome at the end of Phase-II will be at TRL 6.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date February 28, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date February 28, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_8589
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 16003376-c7b4-44c7-aa46-917562fcb4db
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2011-09-01
Homepage URL https://techport.nasa.gov/view/8589
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-20
Program Code 026:027
Source Datajson Identifier True
Source Hash 9254964684024deea4c2b4e27a4de71b1d2a5693
Source Schema Version 1.1

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