PACE OCI Level-3 Global Mapped Aerosol Index, Unified Aerosol Algorithm (UAA) - Near Real-time (NRT) Data, version 3.1

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.

The UAVI_UAA data suite provides the Ultraviolet Absorbing Aerosol Index (UVAI) calculated using the Unified Aerosol Algorithm. UVAI is a unitless, semi-quantitative indicator of light-absorbing aerosols (e.g., smoke, mineral dust), sensitive to their amount, altitude, and absorption strength; positive values typically flag absorbing plumes, while values near/below zero indicate weakly or non-absorbing conditions. Common uses include plume detection and tracking, air-quality and climate analyses, and providing aerosol context for ocean-color atmospheric correction; users should apply recommended screening in the file attributes.