Carbon Dioxide Flux Measurements in an Urban Residential Area and Urban park in Seoul, Korea

• DOI: 10.5194/icuc12-657
• Publication Date: 2025-05-21T15:10:32Z
• Authors: Sungsoo Jo; Keunmin Lee; Je-woo Hong; Jinkyu Hong

Urban areas are major sources of greenhouse gas emissions and the intensity of carbon dioxide (CO₂) fluxes depends on population density, transportation patterns, diverse energy consumption and vegetative carbon uptake. A comprehensive understanding of the carbon balance and source attribution is important for effective urban carbon neutrality planning. This study investigates eddy-covariance measured CO₂ fluxes and their statistical partitioning to various sources of CO₂ emissions and uptake at an urban residential area and an urban park in Seoul, Korea. In the urban residential area, major CO₂ emission sources were building heating traffic volume, and hot water usage, and human respiration was not negligible. Additionally, CO₂ fluxes showed significant variation depending on wind direction, with fluxes from the northeast being approximately twice as high as those from the southwest. In contrast, the urban park consistently served as a carbon sink despite its relatively low tree density and leaf area index. Additionally, long term observations revealed that carbon uptake varied depending on meteorological conditions such as drought. However, ecosystem respiration was more pronounced compared to typical natural forests. Further details will be thoroughly discussed in our presentation. AcknowledgementsThis work was funded by the Korea Meteorological Administration Research and Development Program under Grant RS-2024-00404365.