PACE SPEXone Level-2 Regional Land Properties, RemoTAP Algorithm Data, version 4.0

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)