Skip to main content

Description

AER_RTAPLAND provides aerosol and land‐surface properties over land retrieved using the RemoTAP algorithm. Because RemoTAP jointly models surface and atmosphere over land, the suite also provides spectrally resolved land-surface BRDF and BPDF parameters for reflectance and polarization. Typical uses: air-quality and climate studies, aerosol context for ocean-color/land analyses, radiative transfer, and model evaluation.
Core geophysical variables in this suite include:
• alh — Aerosol layer height (km)
• angstrom_440_670 / angstrom_440_870 / angstrom_490_670 — Aerosol Ångström exponents (unitless)
• aot / aot550 / aot_fine / aot_coarse — Aerosol optical thickness (unitless)
• bpdf_scale, ross_thick, li_sparse, snow_coef — BRDF/BDPF kernel coefficients (unitless)
• chla — Chlorophyll-a concentration (mg m⁻³)
• fmf / fvf — Aerosol fine mode fraction and fine mode volume fraction (unitless)
• lidar_bsca_total / lidar_depol_ratio / lidar_ratio — Aerosol lidar diagnostics (sr⁻¹ m⁻¹, unitless)
• mi / mr — Aerosol refractive index (imaginary/real part, unitless)
• reff_fine / reff_coarse — Aerosol effective radius (µm)
• sph — Aerosol spherical fraction (unitless)
• ssa — Aerosol single scattering albedo (unitless)
• vd / veff_fine / veff_coarse — Aerosol volume density (µm³ µm⁻²) and effective variance (unitless)
• waterfrac_inland — Water fraction for inland pixels (unitless)
• wind_speed — Ocean surface wind speed (m s⁻¹)

Product Summary

Platforms
PACE
Instruments
SPEXone
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Location
GLOBAL OCEAN
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2024-02-25 to Present
Data Partner
Ocean Biology Processing Group (OBPG) ,
Ocean Biology Distributed Active Archive Center (OB.DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/GCDC/OB.DAAC)
Concept ID
C3555839744-OB_CLOUD
Data State
ACTIVE
Number of Files/Granules
13937
Processing Level
2
Published
Updated
Science Keywords
Aerosols ,
Aerosol Particle Properties

Documents

Variables

The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.

For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor Offset
geophysical_data/mr_mode2 Aerosol refractive index (mode 2, real part) N/A float32 -32767 N/A N/A N/A
geophysical_data/mr_mode2_uncertainty Uncertainty of aerosol refractive index (mode 2, real part) N/A float32 -32767 N/A N/A N/A
geophysical_data/mr_mode3 Aerosol refractive index (mode 3, real part) N/A float32 -32767 N/A N/A N/A
geophysical_data/mr_mode3_uncertainty Uncertainty of aerosol refractive index (mode 3, real part) N/A float32 -32767 N/A N/A N/A
geophysical_data/reff_coarse Aerosol effective radius (coarse mode) micron float32 -32767 N/A N/A N/A
geophysical_data/reff_coarse_uncertainty Uncertainty of aerosol effective radius (coarse mode) micron float32 -32767 N/A N/A N/A
geophysical_data/reff_fine Aerosol effective radius (fine mode) micron float32 -32767 N/A N/A N/A
geophysical_data/reff_fine_uncertainty Uncertainty of aerosol effective radius (fine mode) micron float32 -32767 N/A N/A N/A
geophysical_data/reff_mode1 Aerosol effective radius (mode 1) micron float32 -32767 N/A N/A N/A
geophysical_data/reff_mode1_uncertainty Uncertainty of aerosol effective radius (mode 1) micron float32 -32767 N/A N/A N/A
geophysical_data/reff_mode2 Aerosol effective radius (mode 2) micron float32 -32767 N/A N/A N/A
geophysical_data/reff_mode2_uncertainty Uncertainty of aerosol effective radius (mode 2) micron float32 -32767 N/A N/A N/A
geophysical_data/reff_mode3 Aerosol effective radius (mode 3) micron float32 -32767 N/A N/A N/A
geophysical_data/reff_mode3_uncertainty Uncertainty of aerosol effective radius (mode 3) micron float32 -32767 N/A N/A N/A
geophysical_data/ross_thick Bi-directional surface reflectance distribution function ross-thick kernel coefficient N/A float32 -32767 N/A N/A N/A
geophysical_data/ross_thick_uncertainty Uncertainty of bi-directional surface reflectance distribution function ross-thick kernel coefficient N/A float32 -32767 N/A N/A N/A
geophysical_data/snow_coef Bi-directional surface reflectance distribution function snow kernel coefficient N/A float32 -32767 N/A N/A N/A
geophysical_data/snow_coef_uncertainty Uncertainty of bi-directional surface reflectance distribution function snow kernel coefficient N/A float32 -32767 N/A N/A N/A
geophysical_data/sph Aerosol spherical fraction (volume density weighted) N/A float32 -32767 N/A N/A N/A
geophysical_data/sphere_frac_mode1 Aerosol spherical fraction (mode 1) N/A float32 -32767 N/A N/A N/A
geophysical_data/sphere_frac_mode1_uncertainty Uncertainty of aerosol spherical fraction (mode 1) N/A float32 -32767 N/A N/A N/A
geophysical_data/sphere_frac_mode2 Aerosol spherical fraction (mode 2) N/A float32 -32767 N/A N/A N/A
geophysical_data/sphere_frac_mode2_uncertainty Uncertainty of aerosol spherical fraction (mode 2) N/A float32 -32767 N/A N/A N/A
geophysical_data/sphere_frac_mode3 Aerosol spherical fraction (mode 3) N/A float32 -32767 N/A N/A N/A
geophysical_data/sphere_frac_mode3_uncertainty Uncertainty of aerosol spherical fraction (mode 3) N/A float32 -32767 N/A N/A N/A
geophysical_data/sph_coarse Aerosol spherical fraction (coarse mode) N/A float32 -32767 N/A N/A N/A
geophysical_data/sph_fine Aerosol spherical fraction (fine mode) N/A float32 -32767 N/A N/A N/A
geophysical_data/ssa Aerosol single scattering albedo N/A float32 -32767 N/A N/A N/A
geophysical_data/ssa_coarse Aerosol single scattering albedo (coarse mode) N/A float32 -32767 N/A N/A N/A
geophysical_data/ssa_coarse_uncertainty Uncertainty of aerosol single scattering albedo (coarse mode) N/A float32 -32767 N/A N/A N/A
geophysical_data/ssa_fine Aerosol single scattering albedo (fine mode) N/A float32 -32767 N/A N/A N/A
geophysical_data/ssa_fine_uncertainty Uncertainty of aerosol single scattering albedo (fine mode) N/A float32 -32767 N/A N/A N/A
geophysical_data/ssa_mode1 Aerosol single scattering albedo (mode 1) N/A float32 -32767 N/A N/A N/A
geophysical_data/ssa_mode1_uncertainty Uncertainty of aerosol single scattering albedo (mode 1) N/A float32 -32767 N/A N/A N/A
geophysical_data/ssa_mode2 Aerosol single scattering albedo (mode 2) N/A float32 -32767 N/A N/A N/A
geophysical_data/ssa_mode2_uncertainty Uncertainty of aerosol single scattering albedo (mode 2) N/A float32 -32767 N/A N/A N/A
geophysical_data/ssa_mode3 Aerosol single scattering albedo (mode 3) N/A float32 -32767 N/A N/A N/A
geophysical_data/ssa_mode3_uncertainty Uncertainty of aerosol single scattering albedo (mode 3) N/A float32 -32767 N/A N/A N/A
geophysical_data/ssa_uncertainty Uncertainty of aerosol single scattering albedo N/A float32 -32767 N/A N/A N/A
geophysical_data/vd Aerosol volume density (total) um^3 um^-2 float32 -32767 N/A N/A N/A
geophysical_data/vd_coarse Aerosol volume density (coarse mode) um^3 um^-2 float32 -32767 N/A N/A N/A
geophysical_data/vd_fine Aerosol volume density (fine mode) um^3 um^-2 float32 -32767 N/A N/A N/A
geophysical_data/vd_mode1 Aerosol volume density (mode 1) um^3 um^-2 float32 -32767 N/A N/A N/A
geophysical_data/vd_mode2 Aerosol volume density (mode 2) um^3 um^-2 float32 -32767 N/A N/A N/A
geophysical_data/vd_mode3 Aerosol volume density (mode 3) um^3 um^-2 float32 -32767 N/A N/A N/A
geophysical_data/veff_coarse Aerosol effective variance (coarse mode) N/A float32 -32767 N/A N/A N/A
geophysical_data/veff_fine Aerosol effective variance (fine mode) N/A float32 -32767 N/A N/A N/A
geophysical_data/veff_mode1 Aerosol effective variance (mode 1) N/A float32 -32767 N/A N/A N/A
geophysical_data/veff_mode1_uncertainty Uncertainty of aerosol effective variance (mode 1) N/A float32 -32767 N/A N/A N/A
geophysical_data/veff_mode2 Aerosol effective variance (mode 2) N/A float32 -32767 N/A N/A N/A
You're viewing 150 of 175