Articles | Volume 9, issue 10
Research article
24 Oct 2016
Research article |  | 24 Oct 2016

Comparison of OMI NO2 observations and their seasonal and weekly cycles with ground-based measurements in Helsinki

Iolanda Ialongo, Jay Herman, Nick Krotkov, Lok Lamsal, K. Folkert Boersma, Jari Hovila, and Johanna Tamminen

Data sets

EOS Aura OMI OMNO2 (Collection 3) Aura Validation Data Center (AVDC)

OMI DOMINO NO2 overpass file TEMIS service

Surface concentration data AVAA - open research data portal

Short summary
We present the comparison between satellite- and ground-based atmospheric NO2 observations in Helsinki (Finland). The results show that, despite some limitations due to cloud contamination and low solar angles, satellite data are able to describe urban air quality features such as the weekly and seasonal cycles. The results support air quality satellite data exploitation at high latitudes and prepare for similar applications for future missions.