Articles | Volume 13, issue 7
https://doi.org/10.5194/amt-13-3521-2020
https://doi.org/10.5194/amt-13-3521-2020
Research article
 | 
02 Jul 2020
Research article |  | 02 Jul 2020

Impact of land–water sensitivity contrast on MOPITT retrievals and trends over a coastal city

Ian Ashpole and Aldona Wiacek

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Short summary
We analyse temporal trends in carbon monoxide (CO) detected by the MOPITT satellite instrument over the coastal city of Halifax, Canada. We show that trends in surface level CO differ significantly depending on the data product used (Level 2 or Level 3). This is linked to the different sensitivity with which MOPITT can detect CO at the surface over land and water as well as the differing degree to which the data can be filtered to account for this in the different products.