The Institute for Environmental Studies (IENV) at the Hong Kong University of Science and Technology (HKUST) and the Hong Kong Environmental Protection Department (HKEPD) recently announced that: Massive collaboration effort Research and develop science-based regional ozone and photochemical smog control strategies.
The project is led by HKEPD and carried out by atmospheric research teams from HKUST, the Chinese University of Hong Kong (CUHK), the City University of Hong Kong (CityU) and the Hong Kong Polytechnic University (PolyU). This research collaboration effort also involves a number of international experts and atmospheric research teams, including those from Guangdong and Macau.
Combining interdisciplinary expertise with cutting-edge technology, we will develop a quantitative understanding of the different emission sources that contribute to the formation of atmospheric ozone and smog, their transport pathways, and their en-route transformation processes over the Hong. intended to deepen. Hong Kong and the Guangdong-Hong Kong-Macau Greater Bay Area (GBA).
Over the past two decades, efforts by the governments of Hong Kong, Macau and Guangdong to reduce emissions have reduced the amount of sulfur dioxide (SO2) in the atmosphere.2), nitrogen dioxide (NO2), and particulate matter (PM) levels.
However, the average concentration of ozone remains high and continues to increase. The issue has been in the spotlight lately, with city-wide Air Quality Health Index (AQHI) being either ‘very high’ or ‘severe’ almost every day. – Long-term health risks reported by AQHI.
Accurate measurement of these contaminants requires the use of advanced (research-grade) equipment, supported by experienced researchers, following carefully designed sampling and analysis protocols.
Therefore, the first part of the research effort is to Continuous monitoring of atmospheric composition of reactive organic precursors. This included the operation of an advanced continuous mass spectrometer by a research team led by HKUST, CityU, CUHK, and PolyU, and at multiple locations (urban, rural, background, and the top of Taimo Mountain), its detailed Fully characterize the composition. Atmosphere around Hong Kong.
Atmospheric transport is three dimensional. In addition to quantifying terrestrial atmospheric composition, it is also very important to better understand atmospheric transport in the terrestrial surface boundary layer. Thus, his second part of the research effort was a LIDAR operation led by HKUST to continuously measure vertical variations in wind, ozone, and particulate matter (PM) at multiple locations in Hong Kong. increase.
Terrestrial and lidar measurements can provide continuous information at a given point, but are still limited in spatial extent. So the third part of our research effort is to do more. Comprehensive air, sea and land measurements during ephemeral events.
These include advanced real-time sensor-based air monitoring and collection of multiple air samples using a Government Flight Service helicopter led by a HKUST researcher, and one aboard a vessel led by another HKUST researcher. , and collected by enhanced 80-point simultaneous coordinated grid sampling. in Hong Kong, Macau and Guangdong.
Enhanced sampling has greatly increased the need for accurate VOC analysis, not only for current research efforts in Hong Kong, but also for understanding and qualifying the growing ozone problem in the GBA in the future. So the fourth part of the research effort is HKEPD and Innovation Technology Commission (ITC) support for the establishment of a Gold Standard VOC lab in Hong Kong led by Prof. HKUST. The lab is intended to act as a reference lab to strengthen local capacity in VOC measurement and analysis.
Observational data generated by routine and temporal measurements were analyzed by the first research team, and a source assignment team led by a team from South China University of Science and Technology, Guangzhou, to identify reactive precursors.
Together, the HKUST modeling team will use observations to fine-tune and validate air quality models used in the Hong Kong and GBA ozone and smog studies. Subsequently, informed by the source allocation study, the modeling team shall conduct scenario analysis to assess the performance of various emission control strategies in reducing ozone pollution in Hong Kong and the GBA.
The progress of this collaboration is also closely monitored by an eight-member scientific steering committee, including academic Prof. Jiming HAO (Tsinghua). Prof. Yuanhang ZHANG (PKU), Prof. Zifa WANG (Institute of Atmospheric Physics), Prof. XinMing WANG (Guangzhou Institute of Geochemistry), Prof. Junyu ZHENG (Jinan University), Prof. Yongbo ZHANG (Guangdong Academy of Environmental Sciences) ) ), Professor Alexis LAU (HKUST), and Professor Tao WANG (PolyU).
The Steering Committee meets at least annually to review key findings and recommend potential updates and enhancements to research methodologies. This ensures that the latest science is considered and incorporated into this collaborative research effort.
In addition to science, Professor Alexis Lau asked young researchers to cherish the golden opportunity to participate in this type of large-scale, mission-oriented, interdisciplinary research project.