Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-7095-2018 |
Vertical distribution of aerosols over the Maritime Continent during El Nino | |
Cohen, Jason Blake1,2; Ng, Daniel Hui Loong3; Lim, Alan Wei Lun4; Chua, Xin Rong5 | |
2018-05-23 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:10页码:7095-7108 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Singapore; USA |
英文摘要 | The vertical distribution of aerosols over Southeast Asia, a critical factor impacting aerosol lifetime, radiative forcing, and precipitation, is examined for the 2006 post El Nino fire burning season. Combining these measurements with remotely sensed land, fire, and meteorological measurements, and fire plume modeling, we have reconfirmed that fire radiative power (FRP) is underestimated over Southeast Asia by MODIS measurements. These results are derived using a significantly different approach from other previously attempted approaches found in the literature. The horizontally constrained Maritime Continent's fire plume median height, using the maximum variance of satellite observed aerosol optical depth as the spatial and temporal constraint, is found to be 2.04 +/- 1.52 km during the entirety of the 2006 El Nino fire season, and 2.19 +/- 1.50 km for October 2006. This is 0.83 km (0.98 km) higher than random sampling and all other past studies. Additionally, it is determined that 61 (C 6-10)% of the bottom of the smoke plume and 83 (C 8-11)% of the median of the smoke plume is in the free troposphere during the October maximum; while 49 (C 79)% and 75 (C 12-12)% of the total aerosol plume and the median of the aerosol plume, are correspondingly found in the free troposphere during the entire fire season. This vastly different vertical distribution will have impacts on aerosol lifetime and dispersal. Application of a simple plume rise model using measurements of fire properties underestimates the median plume height by 0.26 km over the entire fire season and 0.34 km over the maximum fire period. It is noted that the model underestimation over the bottom portions of the plume are much larger. The center of the plume can be reproduced when fire radiative power is increased by 20% (with other parts of the plume ranging from an increase of 0 to 60% depending on the portion of the plume and the length of the fire season considered). However, to reduce the biases found, improvements including fire properties under cloudy conditions, representation of small-scale convection, and inclusion of aerosol direct and semi-direct effects are required. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000433000900005 |
WOS关键词 | OPTICAL-PROPERTIES ; SOUTHEAST-ASIA ; FIRE EMISSIONS ; GLOBAL-MODELS ; SATELLITE ; CLIMATE ; CLOUDS ; FOREST ; DEFORESTATION ; VARIABILITY |
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/17327 |
专题 | 地球科学 |
作者单位 | 1.Sun Yat Sen Univ, Sch Atmospher Sci, Guangzhou, Guangdong, Peoples R China; 2.Sun Yat Sen Univ, Guangdong Prov Key Lab Climate Change & Nat Disas, Guangzhou, Guangdong, Peoples R China; 3.Natl Univ Singapore, Trop Marine Sci Inst, Singapore, Singapore; 4.Chinese Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China; 5.Princeton Univ, Princeton, NJ 08544 USA |
推荐引用方式 GB/T 7714 | Cohen, Jason Blake,Ng, Daniel Hui Loong,Lim, Alan Wei Lun,et al. Vertical distribution of aerosols over the Maritime Continent during El Nino[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(10):7095-7108. |
APA | Cohen, Jason Blake,Ng, Daniel Hui Loong,Lim, Alan Wei Lun,&Chua, Xin Rong.(2018).Vertical distribution of aerosols over the Maritime Continent during El Nino.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(10),7095-7108. |
MLA | Cohen, Jason Blake,et al."Vertical distribution of aerosols over the Maritime Continent during El Nino".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.10(2018):7095-7108. |
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