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ESA OCCCI V6, 2006-2025, CUGN Region

Listed in Spray Underwater Glider data from Instrument Development Group, Scripps Institute of Oceanography, University of California, San Diego

Data products generated by the Ocean Colour component of the European Space Agency Climate Change Initiative project.

Description

These files are 8 day composites of merged sensor (MERIS, Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua, Sea-Wide Field-of-View Sensor (SeaWiFS) Local Area Coverage (LAC) & Global Area Coverage (GAC), Visible and Infrared Imager/Radiometer Suite (VIIRS), OLCI) products. MODIS Aqua and SeaWiFS were band-shifted and bias-corrected to MERIS bands and values using a temporally and spatially varying scheme based on the overlap years of 2003-2007.

VIIRS was band-shifted and bias-corrected in a second stage against the MODIS Rrs that had already been corrected to MERIS levels, for the overlap period 2012-2013; and at the third stage OLCI was bias corrected against already corrected MODIS, for overlap period 2016-07-01 to 2019-06-30. VIIRS, MODIS, SeaWiFS and MERIS Rrs were derived from a combination of NASA's l2gen (for basic sensor geometry corrections, etc) and HYGEOS Polymer v4.12 (for atmospheric correction).

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OLCI Rrs were sourced at L1b (already geometrically corrected) and processed with polymer. The Rrs were binned to a sinusoidal 4km level-3 grid, and later to 4km geographic projection, by Brockmann Consult's SNAP. Derived products were generally computed with the standard algorithms through SeaDAS.

QAA IOPs were derived using the standard SeaDAS algorithm but with a modified backscattering table to match that used in the bandshifting. The final chlorophyll is a combination of OCI, OCI2, OC2 and OCx, depending on the water class memberships. Uncertainty estimates were added using the fuzzy water classifier and uncertainty estimation algorithm of Tim Moore as documented in Jackson et al (2017).

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Where it is published

Documentation and papers

Catalogue records · 1

Topics

Inferred from text
Imaging 75% · Tabular 65%
Provenance · 1 source records, 8 field assertions
SourceKeyLast seenRaw
Spray Underwater Glider data from Instrument Development Group, Scripps Institute of Oceanography, University of California, San Diegoesa_occci_v6_ca_20255 d agoJSON v1
FieldAssertionExtractorEvidence
access_levelsource · spraydata ucsd educonnector:spraydata_ucsd_edu@1.0.0
concepts[field].local:field:ocean-atmosphericmapping · spraydata ucsd educonnector:spraydata_ucsd_edu@1.0.0
concepts[modality].local:modality:imagingenrichment · spraydata ucsd edukeyword-concept-rules@1.0.0title+description (75%)
concepts[modality].local:modality:tabularenrichment · spraydata ucsd edukeyword-concept-rules@1.0.0title+description (65%)
descriptionsource · spraydata ucsd educonnector:spraydata_ucsd_edu@1.0.0/summary
spatialsource · spraydata ucsd educonnector:spraydata_ucsd_edu@1.0.0
temporalsource · spraydata ucsd educonnector:spraydata_ucsd_edu@1.0.0
titlesource · spraydata ucsd educonnector:spraydata_ucsd_edu@1.0.0/title