DOI: 10.1002/2013GL059086
论文题名: Quantification of MODIS fire radiative power (FRP) measurement uncertainty for use in satellite-based active fire characterization and biomass burning estimation
作者: Freeborn P.H. ; Wooster M.J. ; Roy D.P. ; Cochrane M.A.
刊名: Geophysical Research Letters
ISSN: 0094-10268
EISSN: 1944-9999
出版年: 2014
卷: 41, 期: 6 起始页码: 1988
结束页码: 1994
语种: 英语
英文关键词: active fire characterization
; biomass burning
; bow-tie effect
; FRP
; MODIS
; uncertainty
Scopus关键词: Biomass
; Estimation
; Fires
; Normal distribution
; Pixels
; Radiometers
; Satellite imagery
; Active fires
; Biomass-burning
; Bowtie effects
; FRP
; MODIS
; uncertainty
; Uncertainty analysis
; biogeochemistry
; biomass burning
; carbon budget
; emission inventory
; fire behavior
; flux measurement
; MODIS
; nadir
; pixel
; quantitative analysis
; radiative forcing
; satellite imagery
; uncertainty analysis
英文摘要: Satellite measurements of fire radiative power (FRP) are increasingly used to estimate the contribution of biomass burning to local and global carbon budgets. Without an associated uncertainty, however, FRP-based biomass burning estimates cannot be confidently compared across space and time, or against estimates derived from alternative methodologies. This work addresses this issue and quantifies the precision of Moderate Resolution Imaging Spectroradiometer (MODIS) measurements of FRP by collecting duplicate, off-nadir, overlapping observations of the same fires. Differences in the per-pixel FRP measured near-simultaneously in consecutive MODIS scans are approximately normally distributed with a standard deviation (ση) of 26.6%. Simulations demonstrate that this uncertainty decreases to less than ∼5% (at ±1 ση) for aggregations larger than ∼50 MODIS active fire pixels. Although FRP uncertainties limit the confidence in flux estimates on a per-pixel basis, the sensitivity of biomass burning estimates to FRP uncertainties can be mitigated by conducting inventories at coarser spatiotemporal resolutions. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896690259&doi=10.1002%2f2013GL059086&partnerID=40&md5=e65feb519bc40adad66a08dfab088585
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7532
Appears in Collections: 气候减缓与适应
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作者单位: Geographic Information Science Center of Excellence, South Dakota State University, Brookings, SD, United States
Recommended Citation:
Freeborn P.H.,Wooster M.J.,Roy D.P.,et al. Quantification of MODIS fire radiative power (FRP) measurement uncertainty for use in satellite-based active fire characterization and biomass burning estimation[J]. Geophysical Research Letters,2014-01-01,41(6).