BIOMASS BURNING RELATED POLLUTIONS AND THEIR CONTRIBUTIONS TO THE LOCAL AIR QUALITY IN HONG KONG
In this study, we present a quantitative estimation of the impacts of biomass burning emissions from different source regions to the local air quality in Hong Kong in 2014 using global chemistry transport model simulations, sun photometer measurements, satellite observations and local monitoring n...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2017-09-01
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| Series: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLII-2-W7/29/2017/isprs-archives-XLII-2-W7-29-2017.pdf |
| Summary: | In this study, we present a quantitative estimation of the impacts of biomass burning emissions from different source regions to the
local air quality in Hong Kong in 2014 using global chemistry transport model simulations, sun photometer measurements, satellite
observations and local monitoring network data. This study focuses on two major biomass burning pollutants, black carbon aerosols and
carbon monoxide (CO). The model simulations of atmospheric black carbon and CO show excellent agreement with sun photometer
aerosol optical depth (AOD) measurements, satellite CO columns observations and local monitoring stations data. From the model
simulation results, we estimated that biomass burning contributes 12 % of total black carbon and 16 % of atmospheric CO in Hong
Kong on annual average. South East Asia shows the largest influence to the black carbon and CO levels in Hong Kong, accounts
for 11 % of the total atmospheric black carbon and 8 % of CO. Biomass burning in North East Asia and Africa also show significant
impacts to Hong Kong. Elevated levels of atmospheric black carbon aerosols and CO were observed during springtime (March and
April) which is mainly due to the enhancement of biomass burning contributions. Black carbon and CO originating from biomass
burning sources are estimated to contribute 40 % of atmospheric black carbon and 28 % of CO in Hong Kong during March 2014. An
investigation focusing on the biomass burning pollution episode during springtime suggests the intensified biomass burning activities
in the Indochinese Peninsula are the major sources of black carbon and CO in Hong Kong during the time. |
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| ISSN: | 1682-1750 2194-9034 |