气候变化领域集成服务门户(CCPortal): Methane Emissions: Remote Mapping and Source Quantification Using an Open-Path Laser Dispersion Spectrometer

CCPortal

DOI	10.1029/2019GL086725
	Methane Emissions: Remote Mapping and Source Quantification Using an Open-Path Laser Dispersion Spectrometer
	Hirst B.; Randell D.; Jones M.; Chu J.; Kannath A.; Macleod N.; Dean M.; Weidmann D.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:10
英文摘要	Reducing man-made greenhouse gas emissions depends on the effective detection and location of sources. We present a new method that remotely detects, locates, and quantifies gas emission rates by sequentially steering an optical beam between multiple retro-reflectors. The novel open-path laser gas sensor uses Laser Dispersion Spectroscopy (LDS), with seven beams up to 98 meters long deployed across open, flat terrain. LDS offers high precision (10–20 ppb), high dynamic range and linearity, enhanced immunity to atmospheric perturbations, with fast response to probe an area in 3 s. Simultaneous wind and concentration data were collected for four calibrated methane gas release schemes with emission rates of ~1.3 kg/hr. The resulting data were processed using a Bayesian, Markov chain Monte-Carlo inverse solver to locate the sources and quantify their mass emission rates and uncertainty bounds. All the sources were located to within a few meters and mass emission rates established within the associated confidence bounds. ©2020. The Authors.
英文关键词	Greenhouse gases; Markov chains; Methane; Spectrometers; Atmospheric perturbations; Concentration data; Confidence bounds; Gas emission rates; High dynamic range; Markov Chain Monte-Carlo; Source quantification; Uncertainty bounds; Gas emissions; emission; greenhouse gas; laser method; mapping method; methane; pollutant source; quantitative analysis; sensor; spectrometer
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/170344
作者单位	Shell Global Solutions International B.V, Amsterdam, Netherlands; MIRICO Ltd, Didcot, United Kingdom; STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
推荐引用方式 GB/T 7714	Hirst B.,Randell D.,Jones M.,et al. Methane Emissions: Remote Mapping and Source Quantification Using an Open-Path Laser Dispersion Spectrometer[J],2020,47(10).
APA	Hirst B..,Randell D..,Jones M..,Chu J..,Kannath A..,...&Weidmann D..(2020).Methane Emissions: Remote Mapping and Source Quantification Using an Open-Path Laser Dispersion Spectrometer.Geophysical Research Letters,47(10).
MLA	Hirst B.,et al."Methane Emissions: Remote Mapping and Source Quantification Using an Open-Path Laser Dispersion Spectrometer".Geophysical Research Letters 47.10(2020).