N: 90 S: -90 E: 180 W: -180
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:
• bpdf_scale — Bi-directional surface polarization distribution function scaling parameter (unitless)
• ross_thick — BRDF Ross–Thick kernel coefficient (unitless)
• f_isotropic — Surface isotropic scaling parameter (unitless)
• li_sparse — BRDF Li–Sparse kernel coefficient (unitless)
Product Summary
Citation
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ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)
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 Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor | Offset |
|---|---|---|---|---|---|---|---|
| bpdf_scale | Bi-directional surface polarization distribution function scaling parameter | N/A | float32 | -32767 | 0 to 10 | N/A | N/A |
| f_isotropic | Surface isotropic scaling parameter | N/A | float32 | -32767 | 0 to 1 | N/A | N/A |
| lat | Latitude | degrees_north | float32 | -999 | -90 to 90 | N/A | N/A |
| li_sparse | Bi-directional surface reflectance distribution function li-sparse kernel coefficient | N/A | float32 | -32767 | 0 to 1 | N/A | N/A |
| lon | Longitude | degrees_east | float32 | -999 | -180 to 180 | N/A | N/A |
| palette | palette | N/A | uint8 | N/A | N/A | N/A | N/A |
| ross_thick | Bi-directional surface reflectance distribution function ross-thick kernel coefficient | N/A | int16 | -32767 | 0 to 2 | N/A | N/A |
| wavelength | wavelengths | nm | int32 | -32767 | 0 to 20000 | N/A | N/A |