Articles | Volume 11, issue 8
Atmos. Meas. Tech., 11, 4883–4890, 2018
https://doi.org/10.5194/amt-11-4883-2018
Atmos. Meas. Tech., 11, 4883–4890, 2018
https://doi.org/10.5194/amt-11-4883-2018

Research article 27 Aug 2018

Research article | 27 Aug 2018

The influence of humidity on the performance of a low-cost air particle mass sensor and the effect of atmospheric fog

Rohan Jayaratne et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Anna Wenzel on behalf of the Authors (26 Jul 2018)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (27 Jul 2018) by Pierre Herckes
RR by Anonymous Referee #1 (30 Jul 2018)
ED: Publish as is (14 Aug 2018) by Pierre Herckes
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Short summary
It is important to correctly interpret the readings reported by low cost airborne particle sensors at high humidity. We demonstrate that deliquescent growth of particles and the formation of fog droplets in the atmosphere can lead to significant increases in particle number and mass concentrations reported by such sensors, unless they are fitted with dryers at the inlet. This is important as air quality standards for particles are specifically limited to solid particles.