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|Title:||Assessing transboundary-local aerosols interaction over complex terrain using a doppler LiDAR network||Authors:||Huang, Tao
Cheng, Jack C. H.
Hon, K. K.
Lam, David H. Y.
Lee, Olivia S. M.
O'Connor, Ewan James
Lee, Harry F.
Yim, Steve Hung Lam
|Keywords:||Engineering::Environmental engineering||Issue Date:||2021||Source:||Huang, T., Li, Y., Cheng, J. C. H., Haywood, J., Hon, K. K., Lam, D. H. Y., Lee, O. S. M., Lolli, S., O'Connor, E. J., Lee, H. F., Wang, M. & Yim, S. H. L. (2021). Assessing transboundary-local aerosols interaction over complex terrain using a doppler LiDAR network. Geophysical Research Letters, 48(12), e2021GL093238-. https://dx.doi.org/10.1029/2021GL093238||Journal:||Geophysical Research Letters||Abstract:||Transboundary-local aerosols interaction requires to be comprehensively understood in urban air quality research. A year-long intensive observation of the atmospheric boundary layer (ABL) at multiple sites in Hong Kong was conducted using a four-Doppler Light Detection and Ranging (LiDAR) network with different scanning modes. Results show that heterogeneity of the ABL in terms of mixing layer height and wind shear was induced by orographic topography. Interaction between local and advected aerosol layers during a transboundary air pollution (TAP) episode was identified by the network. During TAP episode, downward transport of transboundary aerosol relied on small scale eddies with weak wind speed in nighttime, while the transport of surface local aerosol to upper level was the dominated process in daytime, but the heterogeneity of the ABL affected by terrain determined the capacity of the mixing, eventually resulting in the opposite transport direction of aerosols in the transboundary-local aerosols interaction.||URI:||https://hdl.handle.net/10356/153686||ISSN:||0094-8276||DOI:||10.1029/2021GL093238||Rights:||© 2021 American Geophysical Union. All Rights Reserved. This paper was published in Geophysical Research Letters and is made available with permission of American Geophysical Union.||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||ASE Journal Articles|
Updated on May 24, 2022
Updated on May 24, 2022
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