研究興趣
主要從事大氣氣膠相關的研究課題，包括超細粒子(ultrafine particles)的生成機制、PM2.5的物理化學特徵、以及不同污染源影響下的氣膠及雲凝結核特徵觀測研究。
代表著作
Cheung, H.C., Nie, C., Huang, M., Yang, T., Wang, H., Lee, C.S.L., Pei, C., Zhao, J., Liang, B. (2022). Influence of Regional Pollution Outflow on Particle Number Concentration and Particle Size in Airshed of Guangzhou, South China. Aerosol and Air Quality Research, 22, 220097.
Jung, C.-C., Chou, C.C.-K., Huang, Y.-T., Chang, S.-Y., Lee, C.-T., Lin, C.-Y., Cheung, H.C., Kuo, W.-C., Chang, C.-W., Chang, S.-C. (2022). Isotopic signatures and source apportionment of Pb in ambient PM2.5. Scientific Reports 12(1), 4343.
Tsai, I.-C., Hsieh, P.-R., Cheung, H.C., Chou, C.C.-K. (2021). Aerosol impacts on fog microphysics over the western side of Taiwan Strait in April from 2015 to 2017. Atmospheric Environment, 262, 118523.
Cheung, H.C., Chou, C. C.-K., Lee, C.S.L., Kuo, W.-C., Chang, S.-C. (2020). Hygroscopic properties and cloud condensation nuclei activity of atmospheric aerosols under the influences of Asian continental outflow and new particle formation at a coastal site in eastern Asia. Atmospheric Chemistry and Physics, 20, 5911-5922.
Sun, C.Z., Adachi, K., Misawa, K., Cheung, H.C., Chou, C.C.-K., Takegawa, N. (2020). Mixing State of Black Carbon Particles in Asian Outflow Observed at a Remote Site in Taiwan in the Spring of 2017. Journal of Geophysical Research https://doi.org/10.1029/2020JD032526.
Salvador, C.M., Chou, C.C.-K., Cheung, H.C., Ho, T.-T., Tsai, C.-Y., Tsao, T.-M., Su, T.-C. (2020). Measurements of submicron organonitrate particles: Implications for the impacts of NOx pollution in a subtropical forest. Atmospheric Research, 245, 105080.
Lee, C.S.L., Chou, C.C.-K., Cheung, H.C., Tsai, C.-Y., Huang, W.-R., Huang, S.-H., Chen, M.-J., Liao, H.-T., Wu, C.-F., Tsao, T.-M., Tsai, M.-J. and Su, T.-C. (2019). Seasonal variation of chemical characteristics of fine particulate matter at a high-elevation subtropical forest in East Asia. Environmental Pollution, 246, 668-677.
Wang, Z., Wu, Z., Yue, D., Shang, D., Guo, S., Sun, J., Ding, A., Wang, L., Jiang, J., Guo, H., Gao, J., Cheung, H.C., Morawska, L., Keywood, M. and Hu, M. (2017). New particle formation in China: Current Knowledge and further directions. Science of the Total Environment, 577, 258-266.
Cheung, H.C., Chou, C.C.-K., Chen, M.-J., Huang, W.-R., Huang, S.-H., Tsai, C.-Y. and Lee, C.S.L. (2016). Seasonal variations of ultra-fine and submicron aerosols in Taipei, Taiwan: implications for particle formation processes in a subtropical urban area. Atmospheric Chemistry and Physics, 16, 1317-1330.
Cheung, H.C., Chou, C.C.-K., Jayaratne, E.R. and Morawska, L. (2015). Impact of particle formation on atmospheric ions and particle number concentrations in an urban environment. Atmospheric Research, 157, 127-136.
Johnson, G.R., Juwono, A.M., Friend, A.J., Cheung, H.C., Stelcer, E., Cohen, D., Ayoko, G.A. and Morawska, L. (2014). Relating urban airborne particle concentrations to shipping using carbon based elemental emission ratios. Atmospheric Environment, 95, 525-536.
He, C., Ling, X., Crilley, L., Huygens, F., Ayoko, G., Knibbs, L., Cheung, H.C. and Morawska, L. (2014). The Impact of Flood and Post-Flood Cleaning on Airborne Microbiological and Particle Contamination in Residential Houses. Environment International, 69, 9-17.
Cheung, H.C., Chou, C.C.-K, Huang, W.-R. and Tsai, C.-Y. (2013). Characterization of ultrafine particle number concentration and new particle formation in an urban environment of Taipei, Taiwan. Atmospheric Chemistry and Physics, 13, 8935-8946. (granted with Publication award by Ministry of Technology in 2015).
Cheung, H.C., Morawska, L., Ristovski, Z.D. and Wainwright, D. (2012). Influence of medium range transport of particles from nucleation burst on particle number concentration within the urban airshed. Atmospheric Chemistry and Physics, 12, 4951-4962.
Cheung, H.C., Morawska, L. and Ristovski, Z.D. (2011). Observation of new particle formation in subtropical urban environment. Atmospheric Chemistry and Physics, 11, 3823-3833. (granted with Higher Degree Student Publication award by QUT in 2012).
Jayaratne, E.R., Johnson, G.R., McGarry, P., Cheung, H.C. and Morawska, L. (2011). Characteristics of airborne ultrafine and coarse particles during the Australian dust storm of 23 September 2009. Atmospheric Environment, 45, 3996-4001.
Morawska, L., Wang, H., Ristovski, Z., Jayaratne, E.R., Johnson, G., Cheung, H.C., Ling, X. and He, C. (2009). JEM Spotlight: Environmental monitoring of airborne nanoparticles. Journal of Environmental Monitoring, 11, 1758-1773.
Cheung, H.C., Wang, T., Baumann, K. and Guo, H. (2005). Influence of regional pollution outflow on the concentrations of fine particulate matter and visibility in the coastal area of southern China. Atmospheric Environment, 39, 6463-6474.
重要研究與突破
富貴角大氣氣膠吸濕性質及雲凝結核活性的季節變異及影響因子(Cheung et al., Atmos. Chem. Phys., 20, 5911–5922, 2020) 本研究在富貴角研究站調查大氣氣膠(PM2.5)的化學組成、吸濕特性、以及雲凝結核活性的季節變化。研究結果發現：在冬季季風影響期間，氣膠組成中含有較高濃度的無機鹽類(海鹽、硫酸鹽)，因而具有較高的吸濕性，並增加了雲凝結核的活性；反之，在夏季期間，富貴角主要接受源自台灣都市的空氣污染，有機氣膠含量較高，雲凝結核的活性較低。此項結果顯示源自中國大陸的氣膠具有較高的親水性，因而可能經由與雲的交互作用而對區域氣候有較大的影響。本研究並發現夏季期間在富貴角常可觀測到”新微粒生成”，顯示氣體轉化成微粒的物理化學反應在台灣北部濱海地區十分旺盛，對區域氣膠的濃度和物理化學性質都可能有重要的影響。
台北都市地區新粒子生成對超細與亞微米粒子特徵季節變化影響 (Cheung et al., Atmos Chem. Phys., 16, 1317-1330, 2016) 本研究調查台灣北部都市的超細(UFPs)與亞微(PM1)粒子的微物理和化學組成在新粒生成事件影響下的季節變化。觀測結果顯示藉由光化學反應產生的可凝結有機分子可以加強大氣中氣態硫酸的核化過程並產生大量的新粒子。過往的研究結果指出新粒子生成主要在較乾淨的大氣環境中發生，但本研究結果提出新的數據頻繁的新粒子生成事件也可在污染的都市環境中出現。
