Needs and challenges of optical atmospheric monitoring on the background of carbon neutrality in China

Highlights

● A system of environmental optical monitoring technology has been established.

● New optical monitoring techniques and stereoscopic system should be established.

● The focus on interdisciplinarity should be increased.

● Pay more attention on greenhouse gases monitoring and atmospheric chemistry.

Abstract

The achievement of the targets of coordinated control of PM_2.5 and O₃ and the carbon peaking and carbon neutrality depend on the development of pollution and greenhouse gas monitoring technologies. Optical monitoring technology, based on its technical characteristics of high scalability, high sensitivity and wide-targets detection, has obvious advantages in pollution/greenhouse gases monitoring and has become an important direction in the development of environmental monitoring technology. At present, a system of environmental optical monitoring technology with differential optical absorption spectroscopy (DOAS), cavity ring-down spectroscopy (CRDS), light detection and ranging (LIDAR), laser heterodyne spectroscopy (LHS), tunable diode laser absorption spectroscopy (TDLAS), fourier transform infrared spectroscopy (FTIR) and fluorescence assay by gas expansion (FAGE) as the main body has been established. However, with the promotion of “reduction of pollution and carbon emissions” strategy, there have been significant changes in the sources of pollution/greenhouse gases, emission components and emission concentrations, which have put forward new and higher requirements for the development of monitoring technologies. In the future, we should pay more attention to the development of new optical monitoring techniques and the construction of stereoscopic monitoring system, the interdisciplinarity (among mathematics, physics, chemistry and biology, etc.), and the monitoring of greenhouse gases and research on atmospheric chemistry.

Graphical abstract

Keywords

Pollution / Greenhouse gas / Optical atmospheric monitoring / Needs and challenges

Full size|PPT slide

Wenqing Liu, Professor, is the director of the academic committee of Hefei Institutes of Physical Science, Chinese Academy of Sciences, and the academic director of Anhui Institute of Optics and Fine Mechanics. He is also the vice chairman of Chinese Society for Environmental Sciences, the Vice Chairman of the Chinese Optical Society, and the Vice Chairman of China Instrument and Control Society. He is mainly engaged in the research of environmental monitoring technology and application, developed new methods of environmental optical monitoring, developed a series of environmental monitoring equipment and being industrialized, and integrated a comprehensive stereoscopic monitoring system for air pollutants. He developed a new field of environmental optical monitoring technology in China. His research achievements have won 3 times second prize of National Scientific and Technological Progress in 2007, 2011 and 2015, and 5 provincial and ministerial first-class scientific and technological awards. He was honored with the Anhui Province major scientific and technological achievement award in 2012, the science and technology achievement award by Ho Leung Ho Lee foundation in 2016, and the worker “National Advanced Worker” in 2020. He was elected as an academician of the Chinese Academy of Engineering in 2013

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Acknowledgements

The authors would like to acknowledge the financial supports for the work provided by the Strategic Research and Consulting Project of Chinese Academy of Engineering (Nos. 2023-XBZD-18, 2023-JB-05, and 2023-XZ-37).

Conflict of Interests

Wenqing Liu is an advisory board member of Frontiers of Environmental Science & Engineering. The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

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