ACROSS_LISA_PRG_FIDAS_PM_1-Min_L2

The particle mass concentration in the PM1, PM2.5, PM4 and PM10 ranges was measured at the ground–based PRG urban site during ACROSS by a commercial monitor (FIDAS 200E, PALAS GmbH). The instrument was installed at the 7th floor terrace of the Lamark B building of Université Paris Cité at about 20 m height above the ground level and approximately 10 m below the common PM1 inlet used for aerosol measurements during the ACROSS campaign. The time indicated in the datafile is the start time of the 1-min interval. The FIDAS sampled air from its own inlet with a flow rate of 4.8 l min–1. Data were acquired continuously at 1–min time resolution. The FIDAS was calibrated before the ACROSS campaign using reference particles (CalDust, Palas GmbH) and the calibration was additionally verified in the middle of the campaign. Some lack of data occurred during the campaign due to power cuts. Those data are identified as -9999.999 and flagged with a “M” (missing). Valid data are reported with a “O” flag (operation). Different periods were affected by rain on the 19–23, 24–27 and 30 June and 4, 19–20 and 22 July. Detailed information can be provided upon request to the authors and the principal investigators.