气候变化领域集成服务门户(CCPortal): Carbon Dioxide Emissions During the 2018 Kilauea Volcano Eruption Estimated Using OCO-2 Satellite Retrievals

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DOI	10.1029/2020GL090507
	Carbon Dioxide Emissions During the 2018 Kilauea Volcano Eruption Estimated Using OCO-2 Satellite Retrievals
	Johnson M.S.; Schwandner F.M.; Potter C.S.; Nguyen H.M.; Bell E.; Nelson R.R.; Philip S.; O'Dell C.W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:24
英文摘要	This study applies Orbiting Carbon Observatory-2 (OCO-2) column-averaged dry-air mole fractions of CO2 (XCO2) to constrain CO2 fluxes during the 2018 Kilauea volcano eruption. CO2 enhancements (ΔXCO2) of 1–2 parts per million were observed far downwind of the eruption coincident with elevated sulfur dioxide (SO2) concentrations. The estimated CO2 emission rate was 77.1 ± 49.6 kilotons per day (kt day−1) on 11 July 2018 with most of the uncertainty from modeled winds and XCO2 retrievals. This emission rate is higher compared to flux estimates made with ground-based measurements (30–40 kt day−1). However, cross-sectional flux estimates made using OCO-2 XCO2 observations will inherently be larger than ground-based measurements near the source as these estimates comprise all sources of CO2 in the vicinity of the eruption (e.g., vegetation and soil burning). This study for the first time uses satellite XCO2 data ~200 km downwind to estimate CO2 emissions from a major volcanic eruption. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Global warming; Orbits; Sulfur dioxide; Uncertainty analysis; Volcanoes; Carbon dioxide emissions; Emission rates; Ground based measurement; Kilauea volcano; Mole fraction; Parts per millions; Satellite retrieval; Volcanic eruptions; Carbon dioxide; carbon dioxide; concentration (composition); ground-based measurement; OCO; satellite data; sulfur; sulfur dioxide; volcanic eruption; Hawaii [(ISL) Hawaiian Islands]; Hawaii [United States]; Hawaiian Islands; Kilauea
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169299
作者单位	Earth Science Division, NASA Ames Research Center, Moffett Field, CA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins, CO, United States; NASA Academic Mission Services by Universities Space Research Association, Mountain View, CA, United States
推荐引用方式 GB/T 7714	Johnson M.S.,Schwandner F.M.,Potter C.S.,et al. Carbon Dioxide Emissions During the 2018 Kilauea Volcano Eruption Estimated Using OCO-2 Satellite Retrievals[J],2020,47(24).
APA	Johnson M.S..,Schwandner F.M..,Potter C.S..,Nguyen H.M..,Bell E..,...&O'Dell C.W..(2020).Carbon Dioxide Emissions During the 2018 Kilauea Volcano Eruption Estimated Using OCO-2 Satellite Retrievals.Geophysical Research Letters,47(24).
MLA	Johnson M.S.,et al."Carbon Dioxide Emissions During the 2018 Kilauea Volcano Eruption Estimated Using OCO-2 Satellite Retrievals".Geophysical Research Letters 47.24(2020).