PACE OCI Level-3 Global Mapped Cloud Optical Properties Data, version 3.1

Typical uses: screening clouds for atmospheric correction, evaluating cloud–radiation interactions, and joint analyses with ocean-color variables (e.g., chlorophyll, Rrs).

• NOTE - All CLOUD L2 and L3 files with acquisition dates on or after May 1, 2026, include the following additional products cer_16_21, cwp_16_21, cot_16_21. These products will be extended to the full mission record during a future reprocessing of the OCI CLOUD L2 and L3 product suites. Core geophysical variables in this suite include: - cloud_fraction — Cloud fraction (unitless; range 0–1) - water_cloud_fraction — Water cloud fraction (unitless; range 0–1) - ice_cloud_fraction — Ice cloud fraction (unitless; range 0–1) - cer — Cloud particle effective radius (µm) - cot — Cloud optical thickness (unitless) - cwp — Cloud water path (g m⁻²) - cth — Cloud top height (m) - ctp — Cloud top pressure (hPa) - ctt — Cloud top temperature (K)