Non-refractory particulate sulfate and chloride data from a time of flight aerosol chemical speciation monitor around the Southern Ocean in the austral summer of 2016/17, during the Antarctic Circumnavigation Expedition (ACE).

Data files: raw_chl_SO4_mz_55_57_manual_with_flags.csv

File header

date_time: start time (40 seconds after the start of the ten-minute measurement period) in ISO 8601 format YYYY-MM-DDThh:mm:ss+00:00 [UTC]
Chloride [ug/m^3]: Chloride concentration (non-refractory particulate matter with aerodynamic diameter smaller than 1 µm) measured with a ToF-ACSM [micro gram per m^3]
SO4 [ug/m^3]: Sulfuric acid concentration (non-refractory particulate matter with aerodynamic diameter smaller than 1 µm) measured with a ToF-ACSM [micro gram per m^3]
m55 [ug/m^3]: Signal at mass to charge ratio m/z=55 [micro gram per m^3]
m57 [ug/m^3]: Signal at mass to charge ratio m/z=57 [micro gram per m^3]
pollution_mask: data quality flag derived form the signal of the condensation particle counter (CPC) pollution mask, True indicates contanimation free data whereas False indicates data potentially contaminated by the ship exhaust
Filter_mask: data quality flag to exclude samples, where a particle filter was placed in front of the inlet, True indicates free inlet, whereas False indicates potential effects from the additional particle filter (this flag also removes one full 10min period before and one after the placement of the particle filter)