Fig. 4: Vertical profiles of particulate matter mass concentrations during hazy and non-hazy mornings measured by PM-LCS on-board the drone.
From: Drone measurements reveal high near-surface urban haze
a Mass concentrations of PM measured using the LCS setup installed on-board the drone on 18 March 2021, a case considered as a severe hazy morning. Here, the solid black line represents PM1 mass concentration, the solid red line represents PM2.5 mass concentration, and the solid blue line represents PM10 mass concentration. The error bars for each respective measured concentration data showed the standard deviation values. b particulate matter values vertically measured by drone setup during a hazy morning on 19 March 2021. c particulate matter values vertically measured by drone setup during a hazy morning on 20 March 2021 d particulate matter values vertically measured by drone setup during a non-hazy morning on 23 March 2021.
