Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-965-2017 |
Biomass burning aerosols and the low-visibility events in Southeast Asia | |
Lee, Hsiang-He1; Bar-Or, Rotem Z.2; Wang, Chien1,2 | |
2017-01-23 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | Singapore; USA |
英文摘要 | Fires including peatland burning in Southeast Asia have become a major concern to the general public as well as governments in the region. This is because aerosols emitted from such fires can cause persistent haze events under certain weather conditions in downwind locations, degrading visibility and causing human health issues. In order to improve our understanding of the spatiotemporal coverage and influence of biomass burning aerosols in Southeast Asia, we have used surface visibility and particulate matter concentration observations, supplemented by decade-long (2003 to 2014) simulations using the Weather Research and Forecasting (WRF) model with a fire aerosol module, driven by high-resolution biomass burning emission inventories. We find that in the past decade, fire aerosols are responsible for nearly all events with very low visibility (<7 km). Fire aerosols alone are also responsible for a substantial fraction of low-visibility events (visibility <10 km) in the major metropolitan areas of Southeast Asia: up to 39% in Bangkok, 36% in Kuala Lumpur, and 34% in Singapore. Biomass burning in mainland Southeast Asia accounts for the largest contribution to total fire-produced PM2.5 in Bangkok (99 %), while biomass burning in Sumatra is a major contributor to fire-produced PM2.5 in Kuala Lumpur (50 %) and Singapore (41 %). To examine the general situation across the region, we have further defined and derived a new integrated metric for 50 cities of the Association of Southeast Asian Nations (ASEAN): the haze exposure day (HED), which measures the annual exposure days of these cities to low visibility (<10 km) caused by particulate matter pollution. It is shown that HEDs have increased steadily in the past decade across cities with both high and low populations. Fire events alone are found to be responsible for up to about half of the total HEDs. Our re-sults suggest that in order to improve the overall air quality in Southeast Asia, mitigation policies targeting both biomass burning and fossil fuel burning sources need to be implemented. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000394595300001 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; GLOBAL FIRE EMISSIONS ; MARITIME CONTINENT ; AIR-QUALITY ; INDONESIA ; SMOKE ; DEFORESTATION ; TRANSPORT ; IMPACT ; FOREST |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/16176 |
专题 | 地球科学 |
作者单位 | 1.Singapore MIT Alliance Res & Technol, Ctr Environm Sensing & Modeling, Singapore, Singapore; 2.MIT, Ctr Global Change Sci, 77 Massachusetts Ave, Cambridge, MA 02139 USA |
推荐引用方式 GB/T 7714 | Lee, Hsiang-He,Bar-Or, Rotem Z.,Wang, Chien. Biomass burning aerosols and the low-visibility events in Southeast Asia[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(2). |
APA | Lee, Hsiang-He,Bar-Or, Rotem Z.,&Wang, Chien.(2017).Biomass burning aerosols and the low-visibility events in Southeast Asia.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(2). |
MLA | Lee, Hsiang-He,et al."Biomass burning aerosols and the low-visibility events in Southeast Asia".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.2(2017). |
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