Fig. 7: Overview of the study area and drone-based PM-LCS measurement system.
From: Drone measurements reveal high near-surface urban haze
a Map of Delhi showing the sampling site along with industrial facilities located in the region and nearby areas. A background map showing various industrial locations was adopted from Rai et al.115 (which is an open access article distributed under the terms of the Creative Commons CC-BY license 4.0), also shown in our article (Mandariya et al.5). b Picture of the drone and its payload consisting of PM-LCS, AE-51 micro-Aethalometer, and meteorological sensors. An aerosol sampling inlet and the silica-gel dehumidifier (dryer) are placed before the payload. In this paper, we primarily use data from the PM-LCS on-board the drone. c Picture of the drone carrying the payload during the measurement flight.
