| title: | PACE OCI Level-1B Data |
| instrument: | OCI |
| platform: | PACE |
| processing_level: | L1B |
| cdm_data_type: | swath |
| geospatial_lat_units: | degrees_north |
| geospatial_lon_units: | degrees_east |
| geospatial_lat_min: | -55.1778183 |
| geospatial_lat_max: | -31.86940002 |
| geospatial_lon_min: | 5.024920464 |
| geospatial_lon_max: | -23.73472786 |
| rta_nadir: | 162, 17 |
| creator_name: | NASA/GSFC/OBPG |
| creator_email: | data@oceancolor.gsfc.nasa.gov |
| creator_url: | https://oceancolor.gsfc.nasa.gov |
| institution: | NASA Goddard Space Flight Center, Ocean Biology Processing Group |
| license: | https://www.earthdata.nasa.gov/engage/open-data-services-and-software/data-and-information-policy |
| naming_authority: | gov.nasa.gsfc.oceancolor |
| project: | Ocean Biology Processing Group |
| publisher_name: | NASA/GSFC/OB.DAAC |
| publisher_email: | data@oceancolor.gsfc.nasa.gov |
| publisher_url: | https://oceancolor.gsfc.nasa.gov |
| Conventions: | CF-1.8, ACDD-1.3 |
| standard_name_vocabulary: | CF Standard Name Table v79 |
| keywords_vocabulary: | NASA Global Change Master Directory (GCMD) Science Keywords |
| date_created: | 2025-11-11T18:53:24.000Z |
| earth_sun_distance_correction: | 0.98006697434590251 |
| geospatial_bounds_crs: | EPSG:4326 |
| geospatial_bounds: | POLYGON((15.56914 -48.48110, -23.88594 -55.17782, -24.25339 -37.47765, 5.02492 -31.86940, 15.56914 -48.48110)) |
| product_name: | PACE_OCI.20251111T135258.L1B.V3.nc |
| time_coverage_start: | 2025-11-11T13:52:58.132Z |
| time_coverage_end: | 2025-11-11T13:57:57.839Z |
| processing_version: | 3.0.1 |
| identifier_product_doi_authority: | https://dx.doi.org |
| identifier_product_doi: | 10.5067/PACE/OCI/L1B/SCI/3 |
| history: | 2025-11-11T18:50:51Z: l1bgen_oci ifile=PACE_OCI.20251111T135258.L1A.nc PACE_OCI_L1B_LUT_V3_2025-10-09.nc PACE_OCI_GEO_LUT_2024-10-10.nc ofile=PACE_OCI.20251111T135258.L1B.V3.nc
[2025-11-11T18:53:45] ncattredit.py PACE_OCI.20251111T135258.L1B.V3.nc /tmp/PACE_OCI.20251111T135258.L1B.V3.nc.607350; 2025-11-11T18:57:57Z: /sdps/sdpsoper/Science/OCSSW/V2025.5/bin/correct_oci_ghosting PACE_OCI.20251111T135258.L1B.V3.nc |
| /sensor_band_parameters/red_m13_coef: | Array of 32 bit Reals [red_bands = 0..162][HAM_sides = 0..1][polarization_coefficients = 0..2] long_name: Red band M13/M11 polynomial coefficients |
| /sensor_band_parameters/blue_wavelength: | Array of 32 bit Reals [blue_bands = 0..118] _FillValue: -32767. long_name: Band center wavelengths for bands from blue CCD valid_min: 305. valid_max: 610. units: nm |
| /sensor_band_parameters/SWIR_m12_coef: | Array of 32 bit Reals [SWIR_bands = 0..8][HAM_sides = 0..1][polarization_coefficients = 0..2] long_name: SWIR band M12/M11 polynomial coefficients |
| /sensor_band_parameters/blue_m12_coef: | Array of 32 bit Reals [blue_bands = 0..118][HAM_sides = 0..1][polarization_coefficients = 0..2] long_name: Blue band M12/M11 polynomial coefficients |
| /sensor_band_parameters/red_wavelength: | Array of 32 bit Reals [red_bands = 0..162] _FillValue: -32767. long_name: Band center wavelengths for bands from red CCD valid_min: 595. valid_max: 900. units: nm |
| /sensor_band_parameters/SWIR_wavelength: | Array of 32 bit Reals [SWIR_bands = 0..8] _FillValue: -32767. long_name: Band center wavelengths for SWIR bands valid_min: 900. valid_max: 2260. units: nm |
| /sensor_band_parameters/SWIR_bandpass: | Array of 32 bit Reals [SWIR_bands = 0..8] _FillValue: -32767. long_name: Bandpasses for SWIR bands valid_min: 0. valid_max: 100. units: nm |
| /sensor_band_parameters/SWIR_solar_irradiance: | Array of 32 bit Reals [SWIR_bands = 0..8] _FillValue: -32767. long_name: Mean extraterrestrial solar irradiance at 1 astronomical unit for the SWIR wavelengths valid_min: 0. valid_max: 2500. units: W m^-2 um^-1 |
| /sensor_band_parameters/SWIR_m13_coef: | Array of 32 bit Reals [SWIR_bands = 0..8][HAM_sides = 0..1][polarization_coefficients = 0..2] long_name: SWIR band M13/M11 polynomial coefficients |
| /sensor_band_parameters/red_m12_coef: | Array of 32 bit Reals [red_bands = 0..162][HAM_sides = 0..1][polarization_coefficients = 0..2] long_name: Red band m12/M11 polynomial coefficients |
| /sensor_band_parameters/blue_solar_irradiance: | Array of 32 bit Reals [blue_bands = 0..118] _FillValue: -32767. long_name: Mean extraterrestrial solar irradiance at 1 astronomical unit for the wavelengths of the blue CCD valid_min: 0. valid_max: 2500. units: W m^-2 um^-1 |
| /sensor_band_parameters/blue_m13_coef: | Array of 32 bit Reals [blue_bands = 0..118][HAM_sides = 0..1][polarization_coefficients = 0..2] long_name: Blue band M13/M11 polynomial coefficients |
| /sensor_band_parameters/red_solar_irradiance: | Array of 32 bit Reals [red_bands = 0..162] _FillValue: -32767. long_name: Mean extraterrestrial solar irradiance at 1 astronomical unit for the wavelengths of the red CCD valid_min: 0. valid_max: 2500. units: W m^-2 um^-1 |
| /geolocation_data/longitude: | Array of 32 bit Reals [scans = 0..1708][pixels = 0..1271] _FillValue: -32767. long_name: Longitudes of pixel locations valid_min: -180. valid_max: 180. units: degrees_east |
| /geolocation_data/latitude: | Array of 32 bit Reals [scans = 0..1708][pixels = 0..1271] _FillValue: -32767. long_name: Latitudes of pixel locations valid_min: -90. valid_max: 90. units: degrees_north |
| /geolocation_data/solar_azimuth: | Array of 16 bit Integers [scans = 0..1708][pixels = 0..1271] _FillValue: -32767 long_name: Solar azimuth angle at pixel locations valid_min: -18000 valid_max: 18000 scale_factor: 0.01 add_offset: 0. units: degrees coordinates: longitude latitude |
| /geolocation_data/solar_zenith: | Array of 16 bit Integers [scans = 0..1708][pixels = 0..1271] _FillValue: -32767 long_name: Solar zenith angle at pixel locations valid_min: 0 valid_max: 18000 scale_factor: 0.01 add_offset: 0. units: degrees coordinates: longitude latitude |
| /geolocation_data/sensor_azimuth: | Array of 16 bit Integers [scans = 0..1708][pixels = 0..1271] _FillValue: -32767 long_name: Sensor azimuth angle at pixel locations valid_min: -18000 valid_max: 18000 scale_factor: 0.01 add_offset: 0. units: degrees coordinates: longitude latitude |
| /geolocation_data/sensor_zenith: | Array of 16 bit Integers [scans = 0..1708][pixels = 0..1271] _FillValue: -32767 long_name: Sensor zenith angle at pixel locations valid_min: 0 valid_max: 18000 scale_factor: 0.01 add_offset: 0. units: degrees coordinates: longitude latitude |
| /geolocation_data/height: | Array of 16 bit Integers [scans = 0..1708][pixels = 0..1271] _FillValue: -32767 long_name: Terrain height at pixel locations valid_min: -10000 valid_max: 10000 units: meters coordinates: longitude latitude |
| /geolocation_data/quality_flag: | Array of Bytes [scans = 0..1708][pixels = 0..1271] _FillValue: 255 long_name: Geolocation pixel quality flags flag_masks: 1, 2, 4 flag_meanings: Off_Earth Solar_eclipse Terrain_bad coordinates: longitude latitude |
| /geolocation_data/watermask: | Array of Bytes [scans = 0..1708][pixels = 0..1271] _FillValue: 255 long_name: Watermask valid_min: 0 valid_max: 1 description: 0 for land, 1 for water coordinates: longitude latitude |
| /scan_line_attributes/time: | Array of 64 bit Reals [scans = 0..1708] _FillValue: -32767. long_name: time valid_min: 0. valid_max: 172802. description: Earth view mid time in seconds of day units: seconds since 2025-11-11 |
| /scan_line_attributes/HAM_side: | Array of Bytes [scans = 0..1708] _FillValue: 255 long_name: Half-angle mirror side valid_min: 0 valid_max: 1 |
| /scan_line_attributes/scan_quality_flags: | Array of Bytes [scans = 0..1708] _FillValue: 255 long_name: Scan quality flags flag_masks: 1, 2, 4 flag_meanings: tilt_change missing_time missing_encoder |
| /navigation_data/att_quat: | Array of 32 bit Reals [scans = 0..1708][quaternion_elements = 0..3] _FillValue: -32767. long_name: Attitude quaternions at EV mid-times valid_min: -1. valid_max: 1. |
| /navigation_data/orb_vel: | Array of 32 bit Reals [scans = 0..1708][vector_elements = 0..2] _FillValue: -32767. long_name: Orbit velocity vectors at EV mid-times (ECR) valid_min: -7.599999905 valid_max: 7.599999905 units: kilometers/second |
| /navigation_data/sun_ref: | Array of 32 bit Reals [scans = 0..1708][vector_elements = 0..2] _FillValue: -32767. long_name: Solar unit vectors in J2000 frame valid_min: -1. valid_max: 1. |
| /navigation_data/tilt_angle: | Array of 32 bit Reals [scans = 0..1708] _FillValue: -32767. long_name: OCI tilt angles at EV mid-times valid_min: -22.5 valid_max: 22.5 units: degrees |
| /navigation_data/att_ang: | Array of 32 bit Reals [scans = 0..1708][vector_elements = 0..2] _FillValue: -32767. long_name: Attitude angles (roll, pitch, yaw) at EV mid-times valid_min: -180. valid_max: 180. units: degrees |
| /navigation_data/CCD_scan_angles: | Array of 32 bit Reals [scans = 0..1708][pixels = 0..1271] _FillValue: -32767. long_name: Scan angles for blue and red band science pixels valid_min: -110. valid_max: 250. units: degrees |
| /navigation_data/orb_pos: | Array of 32 bit Reals [scans = 0..1708][vector_elements = 0..2] _FillValue: -9999999. long_name: Orbit position vectors at EV mid-times (ECR) valid_min: -7100. valid_max: 7100. units: kilometers |
| /navigation_data/SWIR_scan_angles: | Array of 32 bit Reals [scans = 0..1708][pixels = 0..1271] _FillValue: -32767. long_name: Scan angles for SWIR band science pixels valid_min: -110. valid_max: 250. units: degrees |
| /observation_data/rhot_blue: | Array of 32 bit Reals [blue_bands = 0..118][scans = 0..1708][pixels = 0..1271] _FillValue: -32767. long_name: Top of Atmosphere Blue Band Reflectance valid_min: 0. valid_max: 3. description: rhot = Lt * Pi * earth_sun_distance_correction/(solar_irradiance * cos(solar_zenith)) coordinates: longitude latitude |
| /observation_data/rhot_SWIR: | Array of 32 bit Reals [SWIR_bands = 0..8][scans = 0..1708][pixels = 0..1271] _FillValue: -32767. long_name: Top of Atmosphere SWIR Band Reflectance valid_min: 0. valid_max: 3. description: rhot = Lt * Pi * earth_sun_distance_correction/(solar_irradiance * cos(solar_zenith)) coordinates: longitude latitude |
| /observation_data/qual_blue: | Array of Bytes [blue_bands = 0..118][scans = 0..1708][pixels = 0..1271] _FillValue: 255 long_name: Blue Band Quality Flag flag_masks: 1 flag_meanings: saturation coordinates: longitude latitude |
| /observation_data/rhot_red: | Array of 32 bit Reals [red_bands = 0..162][scans = 0..1708][pixels = 0..1271] _FillValue: -32767. long_name: Top of Atmosphere Red Band Reflectance valid_min: 0. valid_max: 3. description: rhot = Lt * Pi * earth_sun_distance_correction/(solar_irradiance * cos(solar_zenith)) coordinates: longitude latitude |
| /observation_data/qual_SWIR: | Array of Bytes [SWIR_bands = 0..8][scans = 0..1708][pixels = 0..1271] _FillValue: 255 long_name: SWIR Band Quality Flag flag_masks: 1 flag_meanings: saturation coordinates: longitude latitude |
| /observation_data/qual_red: | Array of Bytes [red_bands = 0..162][scans = 0..1708][pixels = 0..1271] _FillValue: 255 long_name: Red Band Quality Flag flag_masks: 1, 2 flag_meanings: saturation HAM-B_striping coordinates: longitude latitude |