Final Report: Application of Remote Sensing for Estimating Biogenic Volatile Organic Compounds (BVOCs) Emissions in Northeastern Thailand

ผู้แต่ง : Thayukorn Prabamroong, Kritchayan Intarat, Vanisa Surapipith

วันที่เอกสารถูกเผยแพร่ครั้งแรก | 2023-01-20

Biogenic volatile organic compounds (BVOCs) have critical roles in photochemical reactions, producing harmful air pollutants in surface ozone and secondary organic aerosols (SOA). They also show significant emission degrees which influence the chemical and physical balance in the atmosphere. Vegetation contributes to multiple VOC groups which are diverse and possess high reactivities. The emissions are associated with air pollution and particulate matter. Consequently, these pollution issues make BVOCs a widely appealing subject on air quality modeling study. Nevertheless, it is difficult to construct the model due to the limitation of ground measurement. This experiment implemented Geoinformatics to evaluate the BVOCs emission in 2018, focusing on isoprene and monoterpenes. The experimental area is the northeastern region of Thailand. The analytical model revealed that the total isoprene and monoterpenes emissions were 12.793 Tg yr-1 and 0.504 Tg yr-1. We found that the environmental correction and the density of foliar biomass were the main factors impacting the emission. BVOCs emission increased during summer due to high temperatures and decreased in the early monsoon season. It rose again during the mid of the rainy season (August) until winter (November), and had high consistency when compared to foliar biomass density. The trend of emission quantity during the year is in accordance with previous works. However, the lack of local BVOCs validation and measurement were considered. The utilization of measuring instruments or stations for field observation is recommended with the development of domestic emission factors for further studies. More in-depth analysis in combination with a modeling approach is still required to better understand how BVOC is related to air pollution as well as climate.

อ้างอิง : Thayukorn Prabamroong, Kritchayan Intarat, Vanisa Surapipith. 2021. Final Report: Application of Remote Sensing for Estimating Biogenic Volatile Organic Compounds (BVOCs) Emissions in Northeastern Thailand. Financially supported by National Astronomical Research Institute of Thailand (Public Organization), Ministry of Higher Education, Science, Research and Innovation.