DOI: 10.1002/jgrd.50862
论文题名: High-resolution MODIS aerosol retrieval during wildfire events in California for use in exposure assessment
作者: Raffuse S.M. ; McCarthy M.C. ; Craig K.J. ; Dewinter J.L. ; Jumbam L.K. ; Fruin S. ; James Gauderman W. ; Lurmann F.W.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 19 起始页码: 11242
结束页码: 11255
语种: 英语
英文关键词: aerosol optical depth
; air quality
; biomass burning
; exposure
; MODIS
Scopus关键词: Air quality
; Atmospheric aerosols
; Estimation
; Radiometers
; Reflection
; Satellite imagery
; Aerodynamic diameters
; Aerosol optical depths
; Aerosol optical thickness
; Biomass-burning
; exposure
; Moderate resolution imaging spectroradiometer
; MODIS
; Surface reflectance ratio
; Fires
; aerosol
; algorithm
; concentration (composition)
; estimation method
; image resolution
; MODIS
; optical method
; surface reflectance
; wildfire
; California
; United States
英文摘要: Retrieval of aerosol optical depth (AOD) from the Moderate Resolution Imaging Spectroradiometer (MODIS) using the Collection 5 (C005) algorithm provides large-scale (10 × 10 km) estimates that can be used to predict surface layer concentrations of particulate matter with aerodynamic diameter smaller than 2.5 μm (PM2.5 ). However, these large-scale estimates are not suitable for identifying intraurban variability of surface PM 2.5 concentrations during wildfire events when individual plumes impact populated areas. We demonstrate a method for providing high-resolution (2.5 km) kernel-smoothed estimates of AOD over California during the 2008 northern California fires. The method uses high-resolution surface reflectance ratios of the 0.66 and 2.12 μm channels, a locally derived aerosol optical model characteristic of fresh wildfire plumes, and a relaxed cloud filter. Results show that the AOD derived for the 2008 northern California fires outperformed the standard product in matching observed aerosol optical thickness at three coastal Aerosol Robotic Network sites and routinely explained more than 50% of the variance in hourly surface PM2.5 concentrations observed during the wildfires. Key Points The 2.5 km estimates of AOD are derived for California wildfires AOD estimates predict more than 50% of observed surface PM2.5 variance High-resolution surface reflectance ratios are critically important ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63244
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Sonoma Technology, Inc., 1445 N. McDowell Blvd., Petaluma, CA 94954-65, United States; Esri, Redlands CA, United States; Keck School of Medicine, University of Southern California, Los Angeles CA, United States
Recommended Citation:
Raffuse S.M.,McCarthy M.C.,Craig K.J.,et al. High-resolution MODIS aerosol retrieval during wildfire events in California for use in exposure assessment[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(19)