globalchange  > 气候减缓与适应
DOI: 10.1002/2017JD026840
Scopus记录号: 2-s2.0-85040636540
论文题名:
Mitigating Satellite-Based Fire Sampling Limitations in Deriving Biomass Burning Emission Rates: Application to WRF-Chem Model Over the Northern sub-Saharan African Region
作者: Wang J.; Yue Y.; Wang Y.; Ichoku C.; Ellison L.; Zeng J.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:1
起始页码: 507
结束页码: 528
语种: 英语
英文关键词: fire emission uncertainty ; MODIS fire products ; smoke transport ; WRF-Chem
Scopus关键词: AERONET ; Aqua (satellite) ; atmospheric modeling ; biomass burning ; CALIOP ; emission ; emission inventory ; MODIS ; nadir ; pixel ; pollutant transport ; sampling ; satellite altimetry ; Terra (satellite) ; tropical environment ; uncertainty analysis ; Sub-Saharan Africa
英文摘要: Largely used in several independent estimates of fire emissions, fire products based on MODIS sensors aboard the Terra and Aqua polar-orbiting satellites have a number of inherent limitations, including (a) inability to detect fires below clouds, (b) significant decrease of detection sensitivity at the edge of scan where pixel sizes are much larger than at nadir, and (c) gaps between adjacent swaths in tropical regions. To remedy these limitations, an empirical method is developed here and applied to correct fire emission estimates based on MODIS pixel level fire radiative power measurements and emission coefficients from the Fire Energetics and Emissions Research (FEER) biomass burning emission inventory. The analysis was performed for January 2010 over the northern sub-Saharan African region. Simulations from WRF-Chem model using original and adjusted emissions are compared with the aerosol optical depth (AOD) products from MODIS and AERONET as well as aerosol vertical profile from CALIOP data. The comparison confirmed an 30–50% improvement in the model simulation performance (in terms of correlation, bias, and spatial pattern of AOD with respect to observations) by the adjusted emissions that not only increases the original emission amount by a factor of two but also results in the spatially continuous estimates of instantaneous fire emissions at daily time scales. Such improvement cannot be achieved by simply scaling the original emission across the study domain. Even with this improvement, a factor of two underestimations still exists in the modeled AOD, which is within the current global fire emissions uncertainty envelope. ©2017. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114701
Appears in Collections:气候减缓与适应

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作者单位: Department of Earth and Atmospheric Sciences, University of Nebraska–Lincoln, Lincoln, NE, United States; Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City, IA, United States; Center for Global and Regional Environmental Research, University of Iowa, Iowa City, IA, United States; Climate and Radiation Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Science Systems and Applications, Inc., Lanham, MD, United States

Recommended Citation:
Wang J.,Yue Y.,Wang Y.,et al. Mitigating Satellite-Based Fire Sampling Limitations in Deriving Biomass Burning Emission Rates: Application to WRF-Chem Model Over the Northern sub-Saharan African Region[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(1)
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