Real-Time Synchronous 3-D Detection of Air Pollution and Wind Using a Solo Coherent Doppler Wind Lidar

Abstract

The monitoring and tracking of urban air pollution is a challenging environmental issue. The approach of synchronous 3-D detection of wind and pollution using a solo coherent Doppler wind lidar (CDWL) is developed and demonstrated. The 3-D distribution of pollutant is depicted by the backscatter coefficient based on signal intensity of CDWL. Then, a high-resolution wind field is derived to track the local air pollution source with its diffusion and to analyze transboundary air pollution episodes. The approach is experimentally implemented in a chemical industry park. Smoke plumes caused by point source pollutions are captured well using plan position indicator (PPI) scanning with low elevation. A typical source of pollution is located, combining the trajectory of the smoke plume and the horizontal wind vector. In addition, transboundary air pollution caused by the transport of dust storms is detected in a vertical profile scanning pattern, which is consistent with the results of national monitoring stations and backward trajectory models. Our present work provides a significant 3-D detection approach to air pollution monitoring with its sources, paths, and heights by using a solo-CDWL system.

A review: modeling and optimizing diffractive optical elements for enhanced pollutant detection in LiDAR systems

“…LiDAR, an acronym of "light detection and ranging", is a remote sensing technology that measures distances to objects or surfaces using light pulses [9]. Applications of LiDAR span across diverse fields such as topographic mapping, forestry management [10], urban planning and infrastructure management [11,12], environmental monitoring [13], archaeology and cultural heritage, disaster management, Infrastructure inspection and monitoring, and Autonomous Vehicles (AVs) and Robotics vision [14,15].…”

Evaluation and Wind Field Detection of Airborne Doppler Wind Lidar with Automatic Intelligent Processing in North China

“…In recent years, substantial progress has been achieved in both DWL system research and its applications [7][8][9][10]. Furthermore, DWLs exhibit promising potential in investigating various phenomena associated with the wind field, such as air pollution [11,12], the planetary boundary layer [13,14], and gravity waves [15,16], among others. As researchers aim to enhance flight safety and deepen our understanding of climate change, DWL is progressively evolving into a focal research point.…”

Investigating Wind Characteristics and Temporal Variations in the Lower Troposphere over the Northeastern Qinghai–Tibet Plateau Using a Doppler LiDAR

“…With the advancement of photoelectric technology and components, the Doppler wind LiDAR (DWL) has rapidly developed and gradually emerged as one of the more sophisticated forms of wind observation equipment [18,19]. Due to its good accuracy and high spatiotemporal resolution, the DWL has been widely utilized by numerous scientists for detecting wind fields in the lower troposphere [20][21][22][23][24][25][26][27]. To obtain a comprehensive understanding of the wind characteristics in central London, Wood (2013) [28] employed a scanning DWL to observe the airflow patterns over the Thames River.…”