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Marine Optical Buoy (MOBY) Filtered Spectral Radiance Files

Metadata Updated: September 16, 2023

This dataset contains the Marine Optical Buoy (MOBY) filtered spectral radiance files. These are TXT ASCII files. The dataset contains hyper spectral Lw, Lwn, and Es data and modeled Kl Lw and Lwn data. If there is a special Lw product, due to some issue with the specific deployment, then there is an additional file for that day with the Lw and Es for that product.

For example, for deployment M276 there is an Lw10 file. In general, there will be a Lw1 (using Lu(1m) measurement, and Lu(1m) and Lu(5m) to derive KL to propagate Lu(1m) to the surface. Similarly, there will be an Lw2 which uses the pair of Lu(1m) and Lu(9m) to derive Lw, and an Lw7 which uses the pair of Lu(5m) and LU(9m) to derive Lw.

The time period covered by the MOBY filtered spectral radiance dataset begins at 1997-07-29. The project is ongoing and continuous. More data is added as updates to the data record become available.

MOBY is an autonomous radiometric buoy stationed in the waters off Lanai, Hawaii. MOBY has been the primary in-water oceanic observatory for the vicarious calibration of U. S. satellite ocean color sensors since 1997. The MOBY project data set has been evaluated by NOAA, NASA, and NIST for its accuracy and precision numerous times since 1997. The MOBY measurements are calibrated with SI standards every per and post deployments to ensure the data sets continue to provide accurate and precise data. The satellite ocean color vicarious calibration community uses the data to validate the satellite measured radiance.

MOBY was designed to measure sunlight incidents both on and scattered out of the ocean. These measurements are provided in near real-time for the vicarious calibration procedures conducted by ocean color scientists. It is a NOAA-funded project that provides for the vicarious calibration of ocean color satellites such as SeaWiFS and MODIS. Currently, MOBY provides data to JPSS VIIRS and to non-NOAA agency partners, including Copernicus Sentinel 3A and 3B.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Date August 24, 2023
Metadata Created Date September 16, 2023
Metadata Updated Date September 16, 2023
Reference Date(s) September 1, 2023 (publication), October 1, 2016 (revision)
Frequency Of Update quarterly

Metadata Source

Harvested from ncdc

Graphic Preview

MOBY Filtered Spectral Radiance Files

Additional Metadata

Resource Type Dataset
Metadata Date August 24, 2023
Metadata Created Date September 16, 2023
Metadata Updated Date September 16, 2023
Reference Date(s) September 1, 2023 (publication), October 1, 2016 (revision)
Responsible Party DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
Contact Email
Guid gov.noaa.ncdc:C01694
Access Constraints Cite as: NOAA MOBY Science Team (2023). Marine Optical Buoy (MOBY) Filtered Spectral Radiance Files from October 2016 to the present. [indicate subset used]. NOAA National Centers for Environmental Information. doi:TBD. [access date]., Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Bbox East Long -157.1
Bbox North Lat 20.50
Bbox South Lat 20.40
Bbox West Long -157.2
Coupled Resource
Frequency Of Update quarterly
Graphic Preview Description MOBY Filtered Spectral Radiance Files
Graphic Preview File
Graphic Preview Type PNG
Harvest Object Id 05a0fd13-2123-49a4-bc62-c144e4a8a600
Harvest Source Id 2cb3ef77-1683-4c2a-9119-dc65e50917c6
Harvest Source Title ncdc
Lineage NOAA MOBY Science Team, which includes the following organizations: DOC/NOAA/NESDIS/STAR CoastWatch (funding, project management, data distribution, data management, and data archive); University of Miami (UM) (principal Investigator, science, analysis, instrument development, data quality, and grant management); San José State University, Moss Landing Marine Lab (instrument development, instrument operations and maintenance, data quality, data processing, and preparation); and, NIST (analysis, calibration, and standard traceability).
Metadata Language eng; USA
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-157.2, 20.4], [-157.1, 20.4], [-157.1, 20.5], [-157.2, 20.5], [-157.2, 20.4]]]}
Progress onGoing
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2016-10-01

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