DOI: 10.1002/jgrd.50505
论文题名: SO<inf>2</inf> as a possible proxy for volcanic ash in aviation hazard avoidance
作者: Sears T.M. ; Thomas G.E. ; Carboni E. ; Smith A.J.A. ; Grainger R.G.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 11 起始页码: 5698
结束页码: 5709
语种: 英语
英文关键词: aviation
; remote sensing
; volcanic ash
Scopus关键词: Aviation
; Hazards
; Remote sensing
; Volcanoes
; Advanced-along track scanning radiometers
; Aviation hazards
; Contamination levels
; Detection threshold
; Infrared atmospheric sounding interferometers
; Radiative transfer calculations
; Satellite data
; Volcanic ash
; Sulfur dioxide
; atmospheric pollution
; hazard assessment
; IASI
; radiative transfer
; satellite data
; sulfur dioxide
; volcanic ash
; volcanic eruption
; Chile
; Eyjafjallajokull
; Iceland
; Los Lagos
; Puyehue
英文摘要: Airborne volcanic ash poses a significant danger to aircraft, but is difficult to quantify accurately using satellite data, while sulphur dioxide is much easier to detect accurately, but is much less of a direct hazard to aviation. This paper investigates the reliability of using SO2 as a proxy for the location of volcanic ash, using an SO2 retrieval from the Infrared Atmospheric Sounding Interferometer (IASI) and ash detections from IASI and the Advanced Along Track Scanning Radiometer (AATSR). Using a numerical "missed ash fraction" applied to the eruptions of Eyjafjallajökull in 2010 and Puyehue-Cordõn Caulle in 2011 reveals that the SO2 flag typically misses ∼30% of the detectable ash. Furthermore, the missed ash fraction is found to be highly variable, both between the two eruptions and over the course of each eruption, with values of over 80% found on some days. The detection threshold of the AATSR ash flag is also investigated using radiative transfer calculations, allowing the threshold of the IASI flag to be inferred, and these are related to the ash contamination levels. © 2013. American Geophysical Union. All Rights Reserved. 资助项目: NE/1015592/1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63665
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: Atmospheric, Oceanic and Planetary Physics, University of Oxford, Oxford OX1 3PU, United Kingdom
Recommended Citation:
Sears T.M.,Thomas G.E.,Carboni E.,et al. SO<inf>2</inf> as a possible proxy for volcanic ash in aviation hazard avoidance[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(11)