Monthly aerosol optical thickness over land is provided globally at a 5km resolution. Data includes values for three spectral bands (470nm, 550nm, 650nm), the Angstrom coefficient, and the small particle ratio. The product is generated by SCIOPS using measurements from the FY3A MERSI sensor.
Use Cases
- Modeling regional air quality trends by analyzing the monthly aerosol optical thickness at 470nm, 550nm, and 650nm bands.
- Studying aerosol particle size distribution using the aerosol small particle ratio and Angstrom coefficient columns.
- Creating global maps of particulate pollution over land by aggregating the 5km resolution grid data.
- Correlating seasonal aerosol load with climate variables using the time-series of monthly aggregated products.
Strengths
- Global spatial coverage divided into longitude/latitude projected blocks.
- Provides three specific aerosol optical thickness bands (470nm, 550nm, 650nm) per grid point.
- Includes derived parameters like Angstrom coefficient and small particle ratio for particle size analysis.
Limitations
- Spatial resolution of 5km may be insufficient for local-scale urban air quality studies.
- Product is limited to aerosol over land, with no data for oceanic regions.
- Sample size and temporal coverage are unknown, limiting assessment of dataset scale.
Provenance
- Source
- SCIOPS, via NASA Earthdata platform.
- Collection Method
- Derived from measurements by the MERSI sensor on the FY-3A satellite.
- Time Range
- null
- Freshness
- null
- Geography
- Global land coverage.