DOI: 10.1002/2017JD027109
Scopus记录号: 2-s2.0-85047625651
论文题名: Exploring the Utility of IASI for Monitoring Volcanic SO2 Emissions
作者: Taylor I.A. ; Preston J. ; Carboni E. ; Mather T.A. ; Grainger R.G. ; Theys N. ; Hidalgo S. ; Kilbride B.M.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 10 起始页码: 5588
结束页码: 5606
语种: 英语
英文关键词: IASI
; satellite observation
; SO2
; thermal infrared spectra
; volcanic emissions
英文摘要: Satellite remote sensing is a valuable method for detecting and quantifying sulfur dioxide (SO2) emissions at volcanoes. The use of ultraviolet satellite instruments for monitoring purposes has been assessed in numerous studies, but there are advantages to using infrared measurements, including that they can operate at night and during high-latitude winters. This study focuses on the Infrared Atmospheric Sounding Interferometer (IASI). Retrievals developed for this instrument have been shown to be successful when applied to large eruptions, but little has been done to explore their potential for detecting and quantifying emissions from smaller and lower altitude emissions or for the assessment of ongoing activity. Here a “fast” linear retrieval has been applied across the globe to detect volcanic sources of SO2. The results are dominated by emissions from explosive eruptions, but signals are also evident from weak eruptions, passive degassing, and anthropogenic activity. Ecuador and Kamchatka were selected for further study with a more processing intensive iterative retrieval which can quantify the SO2 amount. At Tungurahua in Ecuador, good agreement was seen between IASI, the Ozone Monitoring Instrument (OMI) and ground-based flux data, demonstrating that the retrieval is capable of capturing relative changes in activity. Similarly, good agreement was found between IASI and OMI in Kamchatka. In this high-latitude region, OMI is unable to operate for 3 or 4 months in each year. It is therefore suggested that IASI could be used alongside other instruments for evaluating changes in volcanic activity. ©2018. 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/113836
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: COMET, Department of Earth Sciences, University of Oxford, Oxford, United Kingdom; Department of Earth Sciences, University of Oxford, Oxford, United Kingdom; COMET, Sub-Department of Atmospheric, Oceanic and Planetary Physics, University of Oxford, Oxford, United Kingdom; Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium; Instituto Geofísico de la Escuela Politécnica Nacional, Quito, Ecuador; COMET, Department of Earth Sciences, University of Cambridge, Cambridge, United Kingdom
Recommended Citation:
Taylor I.A.,Preston J.,Carboni E.,et al. Exploring the Utility of IASI for Monitoring Volcanic SO2 Emissions[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(10)