PM10 concentration, Bambey, Senegal

Atmospheric concentrations of Particulate Matter smaller than 10 µm (PM10) are measured using a Tapered Element Oscillating Microbalance (TEOM 1405 (from April 2013 to July 2017) and TEOM 1400A (from November 2017 until now) from Thermo Scientific) equipped with a PM10 inlet (Thermo Scientific). The inlet is located at 6.0 m height. The lower part of the sampling tube (60 cm length) and the measurement chamber of the TEOM are heated at a temperature of 50°C (this heating allows a thermal stability of the particles and the filter, and minimize water condensation interferences, but it may induce a loss of a part of the most volatile particulate compounds, such as ammonium nitrates or condensate organic compounds). The flow rate is 3 L/min. The concentrations in micrograms per cubic meter (µg/m3) are recorded as 5 min averages and distributed as 1 hour averages (UTC). The value reported for 01:00UTC represents the average over the past hour, and so on (the number of values used to compute the average is given for each time step).