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Global Attributes:	Conventions: CF-1.7 Metadata_Conventions: Unidata Dataset Discovery v1.0 cdm_data_type: Grid comment: See summary attribute creator_email: help@esa-oceancolour-cci.org creator_name: Plymouth Marine Laboratory creator_url: http://esa-oceancolour-cci.org geospatial_lat_max: 90.0 geospatial_lat_min: -90.0 geospatial_lat_resolution: .04166666666666666666 geospatial_lat_units: decimal degrees north geospatial_lon_max: 180.0 geospatial_lon_min: -180.0 geospatial_lon_resolution: .04166666666666666666 geospatial_lon_units: decimal degrees east geospatial_vertical_max: 0.0 geospatial_vertical_min: 0.0 git_commit_hash: 45eea8204e363f61e6afb67857448a97db195fea institution: Plymouth Marine Laboratory keywords: satellite,observation,ocean,ocean colour keywords_vocabulary: none license: ESA CCI Data Policy: free and open access. When referencing, please use: Ocean Colour Climate Change Initiative dataset, Version <Version Number>, European Space Agency, available online at http://www.esa-oceancolour-cci.org. We would also appreciate being notified of publications so that we can list them on the project website at http://www.esa-oceancolour-cci.org/?q=publications naming_authority: uk.ac.pml number_of_bands_used_to_classify: 4 number_of_optical_water_types: 14 platform: Orbview-2,Aqua,Envisat,Suomi-NPP, Sentinel-3a processing_level: Level-3 binned product_version: 5.0 project: Climate Change Initiative - European Space Agency references: http://www.esa-oceancolour-cci.org/ sensor: SeaWiFS,MODIS,MERIS,VIIRS,OLCI sensors_present: SeaWiFS source: NASA SeaWiFS L1A and L2 R2018.0 LAC and GAC, MODIS-Aqua L1A and L2 R2018.0, MERIS L1B 3rd reprocessing inc OCL corrections, NASA VIIRS L1A and L2 R2018.0, OLCI L1B spatial_resolution: 4km bin cells standard_name_vocabulary: NetCDF Climate and Forecast (CF) Metadata Conventions Version 1.7 title: ESA CCI Ocean Colour Product number_of_files_composited: 8 summary: Data products generated by the Ocean Colour component of the European Space Agency Climate Change Initiative project. These files are 8 day composites of merged sensor (MERIS, MODIS Aqua, SeaWiFS LAC & GAC, 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). 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 algorithmsthrough 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). and updated accorsing to Jackson et al. (in prep). tracking_id: b3e9533c-0e5f-43dd-b39d-8957c21502d5 creation_date: Tue Nov 3 19:16:38 2020 date_created: Tue Nov 3 19:16:38 2020 time_coverage_resolution: P8D time_coverage_duration: P8D start_date: 12-JUL-2001 00:00:00.000000 stop_date: 19-JUL-2001 23:59:00.000000 time_coverage_start: 200107120000Z time_coverage_end: 200107192359Z history: Source data were: ESACCI-OC-L3S-OC_PRODUCTS-MERGED-1D_DAILY_4km_SIN_PML_OCx_QAA-20010712-fv5.0.nc, ESACCI-OC-L3S-OC_PRODUCTS-MERGED-1D_DAILY_4km_SIN_PML_OCx_QAA-20010713-fv5.0.nc, ESACCI-OC-L3S-OC_PRODUCTS-MERGED-1D_DAILY_4km_SIN_PML_OCx_QAA-20010714-fv5.0.nc, ESACCI-OC-L3S-OC_PRODUCTS-MERGED-1D_DAILY_4km_SIN_PML_OCx_QAA-20010715-fv5.0.nc, ESACCI-OC-L3S-OC_PRODUCTS-MERGED-1D_DAILY_4km_SIN_PML_OCx_QAA-20010716-fv5.0.nc, ESACCI-OC-L3S-OC_PRODUCTS-MERGED-1D_DAILY_4km_SIN_PML_OCx_QAA-20010717-fv5.0.nc, ESACCI-OC-L3S-OC_PRODUCTS-MERGED-1D_DAILY_4km_SIN_PML_OCx_QAA-20010718-fv5.0.nc, ESACCI-OC-L3S-OC_PRODUCTS-MERGED-1D_DAILY_4km_SIN_PML_OCx_QAA-20010719-fv5.0.nc; netcdf_compositor_cci composites Rrs_412, Rrs_443, Rrs_490, Rrs_510, Rrs_560, Rrs_665, water_class1, water_class2, water_class3, water_class4, water_class5, water_class6, water_class7, water_class8, water_class9, water_class10, water_class11, water_class12, water_class13, water_class14, atot_412, atot_443, atot_490, atot_510, atot_560, atot_665, aph_412, aph_443, aph_490, aph_510, aph_560, aph_665, adg_412, adg_443, adg_490, adg_510, adg_560, adg_665, bbp_412, bbp_443, bbp_490, bbp_510, bbp_560, bbp_665, chlor_a, kd_490, Rrs_412_bias, Rrs_443_bias, Rrs_490_bias, Rrs_510_bias, Rrs_560_bias, Rrs_665_bias, chlor_a_log10_bias, aph_412_bias, aph_443_bias, aph_490_bias, aph_510_bias, aph_560_bias, aph_665_bias, adg_412_bias, adg_443_bias, adg_490_bias, adg_510_bias, adg_560_bias, adg_665_bias, kd_490_bias with --mean, Rrs_412_rmsd, Rrs_443_rmsd, Rrs_490_rmsd, Rrs_510_rmsd, Rrs_560_rmsd, Rrs_665_rmsd, chlor_a_log10_rmsd, aph_412_rmsd, aph_443_rmsd, aph_490_rmsd, aph_510_rmsd, aph_560_rmsd, aph_665_rmsd, adg_412_rmsd, adg_443_rmsd, adg_490_rmsd, adg_510_rmsd, adg_560_rmsd, adg_665_rmsd, kd_490_rmsd with --root-mean-square, and SeaWiFS_nobs, MODISA_nobs, MERIS_nobs, VIIRS_nobs, OLCI_nobs, total_nobs - with --total 1604431881 Subsetted from standardised_sine/ESACCI-OC-L3S-OC_PRODUCTS-MERGED-8D_DAILY_4km_SIN_PML_OCx_QAA-20010712-fv5.0.nc to only include variables MERIS_nobs_sum,MODISA_nobs_sum,OLCI_nobs_sum,SeaWiFS_nobs_sum,VIIRS_nobs_sum,chlor_a,chlor_a_log10_bias,chlor_a_log10_rmsd,crs,lat,lon,time,total_nobs_sum netcdf_file_type: NETCDF4_CLASSIC id: ESACCI-OC-L3S-CHLOR_A-MERGED-8D_DAILY_4km_SIN_PML_OCx-20010712-fv5.0.nc

Variables:	MERIS_nobs_sum: Array of 32 bit Reals [time = 0..0][bin_index = 0..23761675] time: bin_index: long_name: Count of the number of observations from the MERIS sensor contributing to this bin cell number_of_files_composited: 8 coordinates: lat lon _FillValue: 0.0 _ChunkSizes: 1, 72900
	MODISA_nobs_sum: Array of 32 bit Reals [time = 0..0][bin_index = 0..23761675] time: bin_index: long_name: Count of the number of observations from the MODIS (Aqua) sensor contributing to this bin cell number_of_files_composited: 8 coordinates: lat lon _FillValue: 0.0 _ChunkSizes: 1, 72900
	OLCI_nobs_sum: Array of 32 bit Reals [time = 0..0][bin_index = 0..23761675] time: bin_index: long_name: Count of the number of observations from the OLCI sensor contributing to this bin cell coordinates: lat lon number_of_files_composited: 8 _FillValue: 0.0 _ChunkSizes: 1, 72900
	SeaWiFS_nobs_sum: Array of 32 bit Reals [time = 0..0][bin_index = 0..23761675] time: bin_index: number_of_files_composited: 8 coordinates: lat lon long_name: Count of the number of observations from the SeaWiFS (GAC and LAC) sensor contributing to this bin cell _FillValue: 0.0 _ChunkSizes: 1, 72900
	VIIRS_nobs_sum: Array of 32 bit Reals [time = 0..0][bin_index = 0..23761675] time: bin_index: number_of_files_composited: 8 long_name: Count of the number of observations from the VIIRS sensor contributing to this bin cell _FillValue: 0.0 coordinates: lat lon _ChunkSizes: 1, 72900
	chlor_a: Array of 32 bit Reals [time = 0..0][bin_index = 0..23761675] time: bin_index: _FillValue: 9.96921E36 ancillary_variables: chlor_a_log10_rmsd chlor_a_log10_bias coordinates: lat lon grid_mapping: crs long_name: Chlorophyll-a concentration in seawater (not log-transformed), generated by as a blended combination of OCI, OCI2, OC2 and OCx algorithms, depending on water class memberships parameter_vocab_uri: http://vocab.ndg.nerc.ac.uk/term/P011/current/CHLTVOLU standard_name: mass_concentration_of_chlorophyll_a_in_sea_water units: milligram m-3 units_nonstandard: mg m^-3 _ChunkSizes: 1, 72900
	chlor_a_log10_bias: Array of 32 bit Reals [time = 0..0][bin_index = 0..23761675] time: bin_index: _FillValue: 9.96921E36 comment: Uncertainty lookups derived from file: /data/datasets/CCI/v5.0-production/stage09b-uncertainty_tables/chlor_a/cci_chla_bias.dat coordinates: lat lon grid_mapping: crs long_name: Bias of log10-transformed chlorophyll-a concentration in seawater. ref: http://www.esa-oceancolour-cci.org/?q=webfm_send/581 rel: uncertainty _ChunkSizes: 1, 72900
	chlor_a_log10_rmsd: Array of 32 bit Reals [time = 0..0][bin_index = 0..23761675] time: bin_index: _FillValue: 9.96921E36 comment: Uncertainty lookups derived from file: /data/datasets/CCI/v5.0-production/stage09b-uncertainty_tables/chlor_a/cci_chla_rmsd.dat coordinates: lat lon grid_mapping: crs long_name: Root-mean-square-difference of log10-transformed chlorophyll-a concentration in seawater. ref: http://www.esa-oceancolour-cci.org/?q=webfm_send/581 rel: uncertainty _ChunkSizes: 1, 72900
	crs: Array of 32 bit Integers [time = 0..0] time: grid_mapping_name: 1D binned sinusoidal number_of_latitude_rows: 4320 total_number_of_bins: 23761676 _ChunkSizes: 1
	lat: Array of 32 bit Reals [bin_index = 0..23761675] bin_index: standard_name: latitude units: degrees_north axis: Y _ChunkSizes: 72900
	lon: Array of 32 bit Reals [bin_index = 0..23761675] bin_index: standard_name: longitude units: degrees_east axis: X _ChunkSizes: 72900
	time: Array of 32 bit Integers [time = 0..0] time: axis: T standard_name: time units: days since 1970-01-01 00:00:00 _ChunkSizes: 1
	total_nobs_sum: Array of 32 bit Reals [time = 0..0][bin_index = 0..23761675] time: bin_index: number_of_files_composited: 8 long_name: Count of the total number of observations contributing to this bin cell coordinates: lat lon _FillValue: 0.0 _ChunkSizes: 1, 72900

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DDS:

Dataset {
    Float32 MERIS_nobs_sum[time = 1][bin_index = 23761676];
    Float32 MODISA_nobs_sum[time = 1][bin_index = 23761676];
    Float32 OLCI_nobs_sum[time = 1][bin_index = 23761676];
    Float32 SeaWiFS_nobs_sum[time = 1][bin_index = 23761676];
    Float32 VIIRS_nobs_sum[time = 1][bin_index = 23761676];
    Float32 chlor_a[time = 1][bin_index = 23761676];
    Float32 chlor_a_log10_bias[time = 1][bin_index = 23761676];
    Float32 chlor_a_log10_rmsd[time = 1][bin_index = 23761676];
    Int32 crs[time = 1];
    Float32 lat[bin_index = 23761676];
    Float32 lon[bin_index = 23761676];
    Int32 time[time = 1];
    Float32 total_nobs_sum[time = 1][bin_index = 23761676];
} cci/v5.0-release/sinusoidal/8day/chlor_a/2001/ESACCI-OC-L3S-CHLOR_A-MERGED-8D_DAILY_4km_SIN_PML_OCx-20010712-fv5.0.nc;

OPeNDAP Dataset Access Form

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