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Array · collection · 2024

PACE SPEXone Level-2 Regional Ocean Properties, RemoTAP Algorithm - Near Real-time (NRT) Data, version 4.0

Listed in NASA Earthdata CMR

The Ocean Biology DAAC produces near real-time (NRT) products using the best-available combination of ancillary data from meteorological and ozone data.

Description

As such, the inputs and the calibration used are less than optimal. Near real-time products provide a snapshot of the data during a short time period within a single orbit.

This suite provides aerosol optical/microphysical properties retrieved over the oceans, along with coupled surface parameters used in the retrieval. The suite includes spectral aerosol optical depth (AOD), single-scattering albedo (SSA), complex refractive index (real/imaginary), size distribution metrics (e.g., fine/coarse effective radii and fine-mode fraction), and aerosol shape/fraction spherical; it also reports ocean surface roughness (glint/wind parameterization) and “ocean body” properties that define the water-leaving signal for consistency with the coupled atmosphere–ocean inversion.

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Use AER_RTAPOCEAN for aerosol-climate and air-quality studies, as aerosol context for ocean-color atmospheric correction, and for model evaluation and data assimilation; pair it with OCI/HARP2 products for cross-sensor analyses. Core geophysical variables in this suite include: - chlor_a – Chlorophyll concentration (mg m⁻³) - alh – Aerosol layer height (km) - aot – Aerosol optical thickness (dimensionless) - aot550 – Aerosol optical thickness at 550 nm (dimensionless) - angstrom_440_670 – Ångström exponent, 440–670 nm (dimensionless) - angstrom_440_870 – Ångström exponent, 440–870 nm (dimensionless) - angstrom_490_670 – Ångström exponent, 490–670 nm (dimensionless) - fmf – Aerosol fine mode fraction (dimensionless) - fvf – Aerosol fine mode volume fraction (dimensionless) - lidar_bsca_total – Aerosol lidar backscatter coefficient (km⁻¹ sr⁻¹) - lidar_depol_ratio – Aerosol lidar depolarization ratio (dimensionless) - lidar_ratio – Aerosol lidar extinction-to-backscatter ratio (sr) - mi – Aerosol refractive index, imaginary part (dimensionless) - mr – Aerosol refractive index, real part (dimensionless) - reff_coarse – Aerosol effective radius, coarse mode (µm) - reff_fine – Aerosol effective radius, fine mode (µm) - sph – Aerosol spherical fraction (dimensionless) - ssa – Aerosol single scattering albedo (dimensionless) - vd – Aerosol volume density (µm³ µm⁻²) - veff_coarse – Aerosol effective variance, coarse mode (dimensionless) - veff_fine – Aerosol effective variance, fine mode (dimensionless) - waterfrac_inland – Water fraction over inland pixels (dimensionless, 0–1) - wind_speed – Wind speed (m s⁻¹)

Links

Documentation and papers

Catalogue records · 2

Topics

Inferred from text
Oceanography 74%
Provenance · 1 source records, 16 field assertions
SourceKeyLast seenRaw
NASA Earthdata CMRC4126554489-OB_CLOUD11 d agoJSON v1
FieldAssertionExtractorEvidence
access_levelsource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[field].anzsrc:group:3708enrichment · NASA CMRtaxonomy-embedding@1.1.0title+keywords+description (74%)
concepts[instrument].gcmd_instrument:spexonesource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/atmosphere/aerosolssource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/atmosphere/aerosols/aerosol-particle-propertiessource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/oceans/ocean-optics/chlorophyll/chlorophyll-concentrationsource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/oceans/ocean-optics/ocean-colorsource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[platform].gcmd_platform:pacesource · NASA CMRconnector:nasa_cmr@1.0.0
created_datesource · NASA CMRconnector:nasa_cmr@1.0.0
descriptionsource · NASA CMRconnector:nasa_cmr@1.0.0/umm/Abstract
publication_datesource · NASA CMRconnector:nasa_cmr@1.0.0
spatialsource · NASA CMRconnector:nasa_cmr@1.0.0/umm/SpatialExtent
temporalsource · NASA CMRconnector:nasa_cmr@1.0.0/umm/TemporalExtents
titlesource · NASA CMRconnector:nasa_cmr@1.0.0/umm/EntryTitle
updated_datesource · NASA CMRconnector:nasa_cmr@1.0.0
version_labelsource · NASA CMRconnector:nasa_cmr@1.0.0