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- W4353041409 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> In this paper the Photoacoustic Aerosol Absorption Spectrometer PAAS-4λ is introduced. PAAS-4λ was specifically developed for long-term monitoring tasks in (unattended) air quality stations. It uses four wavelengths coupled to a single acoustic resonator in a compact and robust set-up. The instrument has been thoroughly characterized and carefully calibrated in the laboratory using NO<sub>2</sub>/air mixtures and Nigrosin aerosol. It has an ultimate 1<em>σ</em> detection limit below 0.1Mm<sup>-1</sup> at a measurement precision and accuracy of 3 % and 10 %, respectively. In order to demonstrate the PAAS-4λ suitability for long-term monitoring tasks, the instrument is currently validated at the air quality monitoring station Pallas in Finland, about 140 km north of the Arctic circle. Eleven months of PAAS-4λ data from this deployment are presented and discussed in terms of instrument performance. Intercomparisons with the filter-based photometers COSMOS, MAAP, and AE33 demonstrate the capabilities and value of PAAS-4λ, also for the validation of the widely used filter-based instruments." @default.
- W4353041409 created "2023-03-23" @default.
- W4353041409 date "2023-03-22" @default.
- W4353041409 modified "2023-10-18" @default.
- W4353041409 title "Comment on amt-2022-332" @default.
- W4353041409 doi "https://doi.org/10.5194/amt-2022-332-rc2" @default.
- W4353041409 hasPublicationYear "2023" @default.
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