Articles | Volume 11, issue 5
Atmos. Meas. Tech., 11, 2797–2819, 2018
https://doi.org/10.5194/amt-11-2797-2018
Atmos. Meas. Tech., 11, 2797–2819, 2018
https://doi.org/10.5194/amt-11-2797-2018

Research article 14 May 2018

Research article | 14 May 2018

Intra-pixel variability in satellite tropospheric NO2 column densities derived from simultaneous space-borne and airborne observations over the South African Highveld

Stephen Broccardo et al.

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AR by Svenja Lange on behalf of the Authors (07 Aug 2017)  Author's response
ED: Publish as is (08 Aug 2017) by Michel Van Roozendael
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Short summary
Measurements of nitrogen dioxide, known to originate from industrial and automotive combustion sources, have been made from space for two decades. Successive generations of instrument bring improvements in ground-pixel resolution; however features in the atmosphere are known to be smaller than what the satellites can resolve. Measurements of urban and industrial areas using a high-resolution airborne instrument allow the impact of the satellite's relatively low resolution to be evaluated.