9f33fbde-0188-4b8a-92fa-bfc461d1f485 Copernicus Marine Service product specification CMEMS servicedesk.cmems@mercator-ocean.eu http://marine.copernicus.eu/ 2022-06-28T14:42:41.34Z ISO 19139, MyOcean profile 0.2 2 4 4 false WGS 84 / Plate Carree (EPSG:32662) EPSG [ARCHIVE] Global Surface Chlorophyll Concentration from Satellite observations (daily average) Reprocessed L3 (ESA-CCI) OCEANCOLOUR_GLO_CHL_L3_REP_OBSERVATIONS_009_065 2009-09-30 2021-04-26 9f33fbde-0188-4b8a-92fa-bfc461d1f485 '''This product has been archived''' For operationnal and online products, please visit https://marine.copernicus.eu '''Short description:''' For the Global ocean, the ESA Ocean Colour CCI surface Chlorophyll (mg m-3, 4 km resolution) using the OC-CCI recommended chlorophyll algorithm is made available in CMEMS format. Phytoplankton functional types (PFT) products provide daily chlorophyll concentrations of three size-classes, consisting of nano, pico and micro-phytoplankton. L3 products are daily files, while the L4 are monthly composites. ESA-CCI data are provided by Plymouth Marine Laboratory at 4km resolution. These are processed using the same in-house software as in the operational processing. Standard masking criteria for detecting clouds or other contamination factors have been applied during the generation of the Rrs, i.e., land, cloud, sun glint, atmospheric correction failure, high total radiance, large solar zenith angle (actually a high air mass cutoff, but approximating to 70deg zenith), coccolithophores, negative water leaving radiance, and normalized water leaving radiance at 555 nm 0.15 Wm-2 sr-1 (McClain et al., 1995). Ocean colour technique exploits the emerging electromagnetic radiation from the sea surface in different wavelengths. The spectral variability of this signal defines the so called ocean colour which is affected by the presence of phytoplankton. By comparing reflectances at different wavelengths and calibrating the result against in-situ measurements, an estimate of chlorophyll content can be derived. A detailed description of calibration & validation is given in the relevant QUID, associated validation reports and quality documentation. '''Processing information:''' ESA-CCI data are provided by Plymouth Marine Laboratory at 4km resolution. These are processed using the same in-house software as in the operational processing. The entire CCI data set is consistent and processing is done in one go. Both OC CCI and the REP product are versioned. Standard masking criteria for detecting clouds or other contamination factors have been applied during the generation of the Rrs, i.e., land, cloud, sun glint, atmospheric correction failure, high total radiance, large solar zenith angle (actually a high air mass cutoff, but approximating to 70deg zenith), coccolithophores, negative water leaving radiance, and normalized water leaving radiance at 555 nm 0.15 Wm-2 sr-1 (McClain et al., 1995). '''Description of observation methods/instruments:''' Ocean colour technique exploits the emerging electromagnetic radiation from the sea surface in different wavelengths. The spectral variability of this signal defines the so called ocean colour which is affected by the presence of phytoplankton. By comparing reflectances at different wavelengths and calibrating the result against in-situ measurements, an estimate of chlorophyll content can be derived. '''Quality / Accuracy / Calibration information:''' Detailed description of cal/val is given in the relevant QUID, associated validation reports and quality documentation.''' '''Suitability, Expected type of users / uses:''' This product is meant for use for educational purposes and for the managing of the marine safety, marine resources, marine and coastal environment and for climate and seasonal studies. '''DOI (product) :''' https://doi.org/10.48670/moi-00097 E.U. Copernicus Marine Service Information Emanuele BÖHM OC-CNR-ROMA-IT gsdk@isac.cnr.it Rosalia SANTOLERI OC-CNR-ROMA-IT rosalia.santoleri@cnr.it Ben CALTON OC-PML-PLYMOUTH-UK bac@pml.ac.uk Ben CALTON OC-PML-PLYMOUTH-UK cmems@pml.ac.uk Javier CONCHA OC-CNR-ROMA-IT gsdk@isac.cnr.it / N/A https://catalogue.marine.copernicus.eu/documents/IMG/OCEANCOLOUR_GLO_CHL_L3_REP_OBSERVATIONS_009_065.png OCEANCOLOUR_GLO_CHL_L3_REP_OBSERVATIONS_009_065 Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2018-07-27 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme satellite-observation Discipline 2017-04-25 geonetwork.thesaurus.local.discipline.myocean.discipline mass_concentration_of_picophytoplankton_expressed_as_chlorophyll_in_sea_water mass_concentration_of_microphytoplankton_expressed_as_chlorophyll_in_sea_water mass_concentration_of_nanophytoplankton_expressed_as_chlorophyll_in_sea_water uncertainties mass_concentration_of_chlorophyll_a_in_sea_water Climate and Forecast Standard Names 2017-04-04 geonetwork.thesaurus.external.parameter.myocean.ocean-variables multi-year Temporal scale 2009-06-12 geonetwork.thesaurus.local.temporal-scale.myocean.temporal-scale marine-safety marine-resources coastal-marine-environment weather-climate-and-seasonal-forecasting Area of benefit 2009-09-09 geonetwork.thesaurus.local.area-of-benefit.myocean.area-of-benefit global-ocean Reference Geographical Areas 2009-09-09 geonetwork.thesaurus.local.reference-geographical-area.myocean.reference-geographical-area Level 3 Processing level 2021-07-26 geonetwork.thesaurus.local.processing-level.myocean.processing-level Not Applicable Model assimilation 2016-02-03 geonetwork.thesaurus.external.theme.myocean.model-assimilation See Copernicus Marine Environment Monitoring Service Data commitments and licence at: http://marine.copernicus.eu/web/27-service-commitments-and-licence.php No limitations on public access 7bdc830b-6321-4ffb-ae76-8707256c6d03 aeb41fa3-3b89-4b04-b484-1e9c63e1d44b McClain, C. R., Arrigo, K. R., Esaias, W., Darzi, M., Patt, F. S., Evans, R. H., et al.(1995). SeaWiFS Algorithms, Part 1. NASA Tech. Memo. 104566, Vol. 28 Greenbelt, Maryland: NASA Goddard Space Flight Center. 2019-05-08 O Reilly, J.E. and co-authors, 2000: ''Ocean color chlorophyll a algorithms for SeaWiFS, OC2, and OC4: Version 4.'' In: J.E. O Reilly and co-authors, SeaWiFS Postlaunch Calibration and Validation Analyses, Part 3. NASA Tech. Memo. 2000-206892, Vol. 11, S.B. Hooker and E.R. Firestone, Eds., NASA Goddard Space Flight Center, Greenbelt, Maryland, 9-23. 2019-05-08 Sathyendranath, S, Brewin, RJW, Müeller, D, Brockmann, C, Deschamps, P-Y, Doerffer, R, Fomferra, N, Franz, BA, Grant, MG, Hu C, Krasemann, H, Lee, Z, Maritorena, S, Devred, E, Mélin, F, Peters, M, Smyth, T, Steinmetz, F, Swinton, J, Werdell, J, Regner, P (2012) Ocean Colour Climate Change Initiative: Approach and Initial Results, IGARSS 2012, 2024-2027. http://dx.doi.org/10.1109/IGARSS.2012.6350979 2019-05-08 eng oceans bounding box -180.00 180.00 -90.00 90.00 daily-mean 1997-09-04 0 0 display priority: 11060 observation temporal resolution: daily mean vertical level number: 1 false Grid NetCDF-4 Classic model COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 See the referenced specification The myOcean products depends on other products for production or validation. The detailed list of dependencies is given in ISO19115's aggregationInfo (ISO19139 Xpath = "gmd:MD_Metadata/gmd:identificationInfo/gmd:aggregationInfo[./gmd:MD_AggregateInformation/gmd:initiativeType/gmd:DS_InitiativeTypeCode/@codeListValue='upstream-validation' or 'upstream-production']")