AD4GD Gridded Air Quality Data

A high resolution dataset for particulate matter (PM2.5 and PM10) generated from low cost sensor (LCS) measurements, in the framework of the Horizon Europe All Data for Green Deal (AD4GD) project.

For this purpose, observations from the sensor.community project were combined with meteorological data from ERA5 and air quality data from CAMS Europe model. To enhance the trustworthiness of the low cost sensor measurements, a machine learning model was trained against EEA reference measurements solely using meteorological and sensor data as feature input. Ultimately, the corrected data were gridded to a high-resolution regular lat-lon lattice in two ways.

  1. Ordinary Kriging for the wider European region, based solely based on the LCS data.
  2. Universal Kriging just for central Europe, combining the LCS with data from the CAMS European Air Quality model.

Data description

Data type

Gridded

Projection

Regular latitude-longitude grid

Horizontal coverage

Europe land, Central Europe

Horizontal resolution

0.01° x 0.01°, 0.02° x 0.02°

Vertical coverage

Surface

Vertical resolution

Single level

Temporal coverage

From 2024 onwards

Temporal resolution

hourly, daily

File format

NetCDF4

Conventions

Climate and Forecast (CF) Metadata Convention v1.7

Versions

0.1

Update frequency

Daily

Variables

Name
Units
Description

Particulate Matter (<10µm)

µg m-3

The mass concentration of coarse particulate matter (particles with a aerodynamic diameter of 10 micrometers or less) present in the ambient air. Values are derived from a mixture of data from low cost sensors and the CAMS Europe Air Quality Forecast.

Particulate Matter (<2.5µm)

µg m-3

The mass concentration of fine particulate matter (particles with a aerodynamic diameter of 2.5 micrometers or less) present in the ambient air. Values are derived from a mixture of data from low cost sensors and the CAMS Europe Air Quality Forecast.