GHADA - Aerosol Optical Depth (AOD) at 550 nm

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

Date ( Publication ): Invalid DateTInvalid Date

Identifier: unknown

Status: Under development

Author

- Saleem Ibrahim ( )

Point of contact

- Saleem Ibrahim

Maintenance and update frequency: As needed

Keywords ( Theme )

Environmental quality maps
Geoharmonizer
geoharvester
geodata

Keywords ( Place )

Europe

GEMET - INSPIRE themes, version 1.0 ( Theme )

Geographical grid systems

Use limitation: None

Access constraints: Copyright

Use constraints: otherRestictions

Distance: 1000 m

Metadata language: eng

Character set: UTF8

Topic category

Environment

Begin date: 201801-01-01

End date: 202012-12-31

Reference system identifier: EPSG:3035

Number of dimensions: 2

Dimension name: Row

Resolution: 1000 m

Dimension name: Column

Resolution: 1000 m

Cell geometry: Area

Distribution format

GeoTIFF ( XY )
OGC WMS ( 1.3 )

OnLine resource: gh:enq-aod-etXeml-m-1km-na--eumap-3035-v1X0 ( OGC:WMS )
WMS browse by specifying year and month (add eg. "&DIM_YEAR=201902" for February 2019)

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OnLine resource: https://s3.eu-central-1.wasabisys.com/eumap/enq/enq_aod_et.eml_m_1km_na_2020.05_eumap_3035_v1.0.tif ( WWW:DOWNLOAD-1.0-http--download )

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OnLine resource: https://s3.eu-central-1.wasabisys.com/eumap/enq/enq_aod_et.eml_m_1km_na_2019.08_eumap_3035_v1.0.tif ( WWW:DOWNLOAD-1.0-http--download )

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OnLine resource: https://s3.eu-central-1.wasabisys.com/eumap/enq/enq_aod_et.eml_m_1km_na_2018.09_eumap_3035_v1.0.tif ( WWW:DOWNLOAD-1.0-http--download )

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OnLine resource: https://s3.eu-central-1.wasabisys.com/eumap/enq/enq_aod_et.eml_m_1km_na_2018.06_eumap_3035_v1.0.tif ( WWW:DOWNLOAD-1.0-http--download )

OnLine resource: https://s3.eu-central-1.wasabisys.com/eumap/enq/enq_aod_et.eml_m_1km_na_2018.05_eumap_3035_v1.0.tif ( WWW:DOWNLOAD-1.0-http--download )

OnLine resource: https://s3.eu-central-1.wasabisys.com/eumap/enq/enq_aod_et.eml_m_1km_na_2018.04_eumap_3035_v1.0.tif ( WWW:DOWNLOAD-1.0-http--download )

OnLine resource: https://s3.eu-central-1.wasabisys.com/eumap/enq/enq_aod_et.eml_m_1km_na_2018.03_eumap_3035_v1.0.tif ( WWW:DOWNLOAD-1.0-http--download )

OnLine resource: https://s3.eu-central-1.wasabisys.com/eumap/enq/enq_aod_et.eml_m_1km_na_2018.02_eumap_3035_v1.0.tif ( WWW:DOWNLOAD-1.0-http--download )

OnLine resource: https://s3.eu-central-1.wasabisys.com/eumap/enq/enq_aod_et.eml_m_1km_na_2018.01_eumap_3035_v1.0.tif ( WWW:DOWNLOAD-1.0-http--download )

Hierarchy level: Dataset

Conformance result

Date: 2010-12-08

Explanation: See specified reference

Pass: Yes

Statement: derived from XY

gmd:MD_Metadata

File identifier: b959ef29-5a56-4b1f-be82-a184016a4484 XML

Metadata language: en

Character set: UTF8

Date stamp: 2022-07-15T14:15:06

Metadata standard name: ISO 19115:2003/19139

Metadata standard version: 1.0

Point of contact

- Saleem Ibrahim ( )

Citation proposal

Saleem Ibrahim () (Inva) . GHADA - Aerosol Optical Depth (AOD) at 550 nm.
https://data.opendatascience.eu/geonetwork/srv/api/records/b959ef29-5a56-4b1f-be82-a184016a4484

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