GHADA - Aerosol Optical Depth (AOD) at 550 nm
Description
Overview:
Aerosol Optical Depth (AOD) at 550 nm
Traceability (lineage):
The data source used to generate this dataset are daily Aerosol Optical Depth (AOD) at 550 nm with 1 km spatial resolution from the MCD19A2 product of MODIS collection 6 for the years 2018-2020 (https://lpdaac.usgs.gov/products/mcd19a2v006/), daily modeled AOD at 550 nm with 80 km spatial resolution from Copernicus Atmosphere Monitoring Service (CAMS) for the years 2018-2020, and elevations from the worldwide digital surface model of the Japan Aerospace Exploration Agency (JAXA) (https://www.eorc.jaxa.jp/ALOS/). NASA’s Aerosols Robotic Network (AERONET) ground measurements were used to validate this dataset.
Scientific methodology:
The outcome of the scheme was a geo-harmonized atmospheric dataset for aerosol optical depth (GHADA) at 550 nm with 1 km spatial resolution and full coverage over Europe. Daily AOD maps were created by training an optimized space-time extra trees model for each year 2018-2020. The results have shown that our trained models reach a prediction accuracy up to 95% when predicting the missing values in the MODIS MCD19A2 product.
Usability:
AOD maps can be used for future air quality studies concerning Europe.
Uncertainty quantification:
nan
Data validation approaches:
GHADA was validated using AOD measurements from AERONET stations across Europe.
Completeness:
The raster files cover the entire Geo-harmonizer region.
Consistency:
nan
Positional accuracy:
1 km spatial resolution
Temporal accuracy:
Daily maps for 3 years, 2018-2020.
Thematic accuracy:
nan
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Tags
- environmental-quality-maps
- geoharvester
- europe
- geoharmonizer
- geodata