OPeNDAP Dataset Query Form

OPeNDAP Dataset Access Form

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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 creation_date: 20201101T131020Z creator_email: help@esa-oceancolour-cci.org creator_name: Plymouth Marine Laboratory creator_url: http://esa-oceancolour-cci.org date_created: 20201101T131020Z 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: MERIS MODISA 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 summary: Data products generated by the Ocean Colour component of the European Space Agency Climate Change Initiative project. These files are daily 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). time_coverage_duration: P1D time_coverage_end: 200810062359Z time_coverage_resolution: P1D time_coverage_start: 200810060000Z title: ESA CCI Ocean Colour Product tracking_id: bbd6a42b-9f8d-46f7-85a4-67caf6def7fe history: Source data were: NASA OBPG SeaWiFS level1 R2018.0 LAC and GAC [A/C via l2gen], NASA OBPG VIIRS L1 R2018.0 [A/C via polymer], NASA OBPG MODIS Aqua L1 R2018.0 (A/C via polymer), ESA MERIS L1B (3rd reprocessing inc OCL correction) [Polymer v4.12] and OLCI L1B [Polymer v4.12]; Derived products were mainly produced with functions validated from the current NASA SeaDAS release and some custom implementations. Uncertainty generation determined by the fuzzy classifier scheme of Tim Moore (2009) as updated by Jackson et al. (2017) and Jackson et al. (in prep). 1604238136 Subsetted from standardised_sine/ESACCI-OC-L3S-OC_PRODUCTS-MERGED-1D_DAILY_4km_SIN_PML_OCx_QAA-20081006-fv5.0.nc to only include variables MERIS_nobs,MODISA_nobs,OLCI_nobs,SeaWiFS_nobs,VIIRS_nobs,crs,kd_490,kd_490_bias,kd_490_rmsd,lat,lon,time,total_nobs netcdf_file_type: NETCDF4_CLASSIC id: ESACCI-OC-L3S-K_490-MERGED-1D_DAILY_4km_SIN_PML_KD490_Lee-20081006-fv5.0.nc

Variables:	MERIS_nobs: 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 coordinates: lat lon _FillValue: 0.0 _ChunkSizes: 1, 72900
	MODISA_nobs: 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 coordinates: lat lon _FillValue: 0.0 _ChunkSizes: 1, 72900
	OLCI_nobs: 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 _FillValue: 0.0 _ChunkSizes: 1, 72900
	SeaWiFS_nobs: 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 SeaWiFS (GAC and LAC) sensor contributing to this bin cell coordinates: lat lon _FillValue: 0.0 _ChunkSizes: 1, 72900
	VIIRS_nobs: 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 VIIRS sensor contributing to this bin cell coordinates: lat lon _FillValue: 0.0 _ChunkSizes: 1, 72900
	crs: Array of 32 bit Integers [time = 0..0] time: number_of_latitude_rows: 4320 total_number_of_bins: 23761676 grid_mapping_name: 1D binned sinusoidal _ChunkSizes: 1
	kd_490: Array of 32 bit Reals [time = 0..0][bin_index = 0..23761675] time: bin_index: _FillValue: 9.96921E36 ancillary_variables: kd_490_rmsd kd_490_bias coordinates: lat lon grid_mapping: crs long_name: Downwelling attenuation coefficient at 490nm, derived using Lee 2005 equation and bbw from Zhang 2009 (following the SeaDAS Kd_lee algorithm) parameter_vocab_uri: http://vocab.ndg.nerc.ac.uk/term/P071/19/CFSN0064 standard_name: volume_attenuation_coefficient_of_downwelling_radiative_flux_in_sea_water units: m-1 units_nonstandard: m^-1 wavelength: 490 _ChunkSizes: 1, 72900
	kd_490_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/kd/cci_kd_bias.dat coordinates: lat lon grid_mapping: crs long_name: Bias of downwelling attenuation coefficient at 490 nm derived using Lee 2005 equation and bbw from Zhang 2009 ref: http://www.esa-oceancolour-cci.org/?q=webfm_send/581 rel: uncertainty units: m-1 units_nonstandard: m^-1 wavelength: 490 _ChunkSizes: 1, 72900
	kd_490_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/kd/cci_kd_rmsd.dat coordinates: lat lon grid_mapping: crs long_name: Root-mean-square-difference of downwelling attenuation coefficient at 490 nm derived using Lee 2005 equation and bbw from Zhang 2009 ref: http://www.esa-oceancolour-cci.org/?q=webfm_send/581 rel: uncertainty units: m-1 units_nonstandard: m^-1 wavelength: 490 _ChunkSizes: 1, 72900
	lat: Array of 32 bit Reals [bin_index = 0..23761675] bin_index: axis: Y standard_name: latitude units: degrees_north _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: Array of 32 bit Reals [time = 0..0][bin_index = 0..23761675] time: bin_index: coordinates: lat lon long_name: Count of the total number of observations contributing to this bin cell _FillValue: 0.0 _ChunkSizes: 1, 72900

For questions or comments about this dataset, contact the administrator of this server [Remote Sensing Group] at: rsgweb@pml.ac.uk

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DDS:

Dataset {
    Float32 MERIS_nobs[time = 1][bin_index = 23761676];
    Float32 MODISA_nobs[time = 1][bin_index = 23761676];
    Float32 OLCI_nobs[time = 1][bin_index = 23761676];
    Float32 SeaWiFS_nobs[time = 1][bin_index = 23761676];
    Float32 VIIRS_nobs[time = 1][bin_index = 23761676];
    Int32 crs[time = 1];
    Float32 kd_490[time = 1][bin_index = 23761676];
    Float32 kd_490_bias[time = 1][bin_index = 23761676];
    Float32 kd_490_rmsd[time = 1][bin_index = 23761676];
    Float32 lat[bin_index = 23761676];
    Float32 lon[bin_index = 23761676];
    Int32 time[time = 1];
    Float32 total_nobs[time = 1][bin_index = 23761676];
} cci/v5.0-release/sinusoidal/daily/kd/2008/ESACCI-OC-L3S-K_490-MERGED-1D_DAILY_4km_SIN_PML_KD490_Lee-20081006-fv5.0.nc;

OPeNDAP Dataset Access Form

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