Description This roof-mounted air sensor in Addis Ababa, the capital of Ethiopia, is one of 10 used by NASA’s Multi-Angle Imager for Aerosols (MAIA) to study the city’s air quality. MAIA’s air sensors provide a detailed look at particulate matter that is 2. 5 micrometers or less in diameter, als...
Source: [NASA](https://science.nasa.gov/photojournal/maia-air-sensor-at-work-in-addis-ababa/)