Big Data NO₂ Socio-Economic Observatory

Tropospheric Nitrogen Dioxide (NO₂)

This map visualises the tropospheric nitrogen dioxide (NO₂) concentrations across selected countries of the East Asia Pacific Region. NO₂ is mainly produced by anthropogenic activities as a result of combustion processes involving fossil fuels in the industry and transportation sectors. As such, this map aims to facilitate an exploration of whether NO_{2 measurements can act as a proxy for human activity and a global indicator for national and sub-national socio-economic activity.}

The map shows the mean (NO₂) concentrations for specific regions of interest (Level 0, Level 2 and Level 2) and for defined periods of time (monthly or quarterly). For a particular administrative boundary the platform reports: main statistics, a time-series graph and a histogram to better understand the distribution of the data pixels (soon-to-come). This information can be visualized and accessed upon clicking an administrative boundary for a Pop-Up display, or via the Raw Data Download button.

Data is derived from the Copernicus Sentinel 5P Mission launched with the objective of monitoring Earth’s atmosphere (key trace gases and aerosols). Data is made available from 2018 onwards with a 7 x 3.5 km spatial resolution and a daily global revisit time. This platform presents data from January 2019 through June 2020. Although the data has a daily temporal resolution, the platform aggregates it as monthly or quarterly composites while doing some pre-processing operations such as cloud masking and resampling of the pixels to a 1km x 1km pixel size for a better alignment to the administrative boundaries.

Find Out More

Read Me - A quickstart guide that explains main features and platform navigation. Provides an example of the information users are able to extract from their (sub)-national region of interest: mean, median,valid data ratio, complete area pixels, clouded pixels, and how to obtain this data.

Copernicus Sentinel 5P - description and characteristics of the satellite mission by the European Space Agency.