Air quality | 2019-2020
New tools and atmospheric products that contribute to air quality monitoring (sulphur dioxide, glyoxal, OClO).
2-dimensional MAX-DOAS observations of nitrogen dioxide (NO2), a key air pollutant. New strategy for retrieval.
Operational validation service required to assure routinely the quality and fitness-for-purpose of the TROPOMI data procured to the Copernicus information services, and to ensure interoperability with other instruments of the Sentinel constellation.
Human activities, the dominant source of NOx into the atmosphere, induce a weekly cycle of NO2 abundances over cities. Comprehensive analysis of NO2 observations from two satellite sensors (OMI and TROPOMI).
Assessing the quality and validity of S-5p/TROPOMI data products relevant to air quality and climate by comparison with reference observations.
Since the start of the COVID-19 pandemic, we have tracked closely the evolution of NO2 abundances observed by the TROPOMI sensor. Due to lockdown measures, unprecedented decreases were observed in China, where COVID-19 was first identified.
Atmospheric observations from the Copernicus constellation of Sentinel satellites to support air quality policies in Belgium to generate maps of nitrogen dioxide (NO2) at sub-city resolution and to elaborate synergies with regional surface pollution analyses.
The Support to Aviation Control Service provides near real-time information on volcanic ash and SO2, dust from sandstorms, or smoke from wildfires, to the aviation sector.
For the first time, nitrous acid (HONO) from devastating wildfires was detected from space. Impact on air quality and climate.