DOI: 10.1002/jgrd.50624
论文题名: Direct top-down estimates of biomass burning CO emissions using TES and MOPITT versus bottom-up GFED inventory
作者: Pechony O. ; Shindell D.T. ; Faluvegi G.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 14 起始页码: 8054
结束页码: 8066
语种: 英语
英文关键词: Biomass burning emissions
; Carbon monoxide
; Climate model
; GFED
; MOPITT
; TES
Scopus关键词: Biomass
; Carbon monoxide
; Climate models
; Estimation
; Inverse problems
; Satellites
; Biomass burning emissions
; GFED
; Measurements of pollution in the tropospheres
; MOPITT
; Regional differences
; Satellite observations
; TES
; Tropospheric emission spectrometers
; Fires
; atmospheric pollution
; biomass burning
; carbon dioxide
; carbon monoxide
; climate modeling
; emission inventory
; MOPITT
; Northern Hemisphere
; pollutant source
; satellite imagery
; satellite sensor
; Southern Hemisphere
; top-down control
英文摘要: In this study, we utilize near-simultaneous observations from two sets of multiple satellite sensors to segregate Tropospheric Emission Spectrometer (TES) and Measurements of Pollution in the Troposphere (MOPITT) CO observations over active fire sources from those made over clear background. Hence, we obtain direct estimates of biomass burning CO emissions without invoking inverse modeling as in traditional top-down methods. We find considerable differences between Global Fire Emissions Database (GFED) versions 2.1 and 3.1 and satellite-based emission estimates in many regions. Both inventories appear to greatly underestimate South and Southeast Asia emissions, for example. On global scales, however, CO emissions in both inventories and in the MOPITT-based analysis agree reasonably well, with the largest bias (30%) found in the Northern Hemisphere spring. In the Southern Hemisphere, there is a one-month shift between the GFED and MOPITT-based fire emissions peak. Afternoon tropical fire emissions retrieved from TES are about two times higher than the morning MOPITT retrievals. This appears to be both a real difference due to the diurnal fire activity variations, and a bias due to the scarcity of TES data. Key Points Near-simultaneous fire and CO satellite observations used to estimate fire CO Satellite CO estimates and GFED 2 and 3 show large regional differences Global agreement is reasonable with largest biases in Northern Hemisphere spring ©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/63532
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: NASA Goddard Institute for Space Studies, Columbia Earth Institute, 2880 Broadway, New York, NY 10025, United States
Recommended Citation:
Pechony O.,Shindell D.T.,Faluvegi G.. Direct top-down estimates of biomass burning CO emissions using TES and MOPITT versus bottom-up GFED inventory[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(14)