气候变化领域集成服务门户(CCPortal): Technical note: Interpretation of field observations of point-source methane plume using observation-driven large-eddy simulations

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DOI	10.5194/acp-22-6489-2022
	Technical note: Interpretation of field observations of point-source methane plume using observation-driven large-eddy simulations
	Raznjevic, Anja; van Heerwaarden, Chiel; van Stratum, Bart; Hensen, Arjan; Velzeboer, Ilona; van den Bulk, Pim; Krol, Maarten
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	6489
结束页码	6505
卷号	22 期号:10 页码:17
英文摘要	This study demonstrates the ability of large-eddy simulation (LES) forced by a large-scale model to reproduce plume dispersion in an actual field campaign. Our aim is to bring together field observations taken under non-ideal conditions and LES to show that this combination can help to derive point-source strengths from sparse observations. We analyze results from a single-day case study based on data collected near an oil well during the ROMEO campaign (ROmanian Methane Emissions from Oil and gas) that took place in October 2019. We set up our LES using boundary conditions derived from the meteorological reanalysis ERA5 and released a point source in line with the configuration in the field. The weather conditions produced by the LES show close agreement with field observations, although the observed wind field showed complex features due to the absence of synoptic forcing. In order to align the plume direction with field observations, we created a second simulation experiment with manipulated wind fields that better resemble the observations. Using these LESs, the estimated source strengths agree well with the emitted artificial tracer gas plume, indicating the suitability of LES to infer source strengths from observations under complex conditions. To further harvest the added value of LES, higher-order statistical moments of the simulated plume were analyzed. Here, we found good agreement with plumes from previous LES and laboratory experiments in channel flows. We derived a length scale of plume mixing from the boundary layer height, the mean wind speed and convective velocity scale. It was demonstrated that this length scale represents the distance from the source at which the predominant plume behavior transfers from meandering dispersion to relative dispersion.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000797404700001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273582
作者单位	Wageningen University & Research; Utrecht University
推荐引用方式 GB/T 7714	Raznjevic, Anja,van Heerwaarden, Chiel,van Stratum, Bart,et al. Technical note: Interpretation of field observations of point-source methane plume using observation-driven large-eddy simulations[J],2022,22(10):17.
APA	Raznjevic, Anja.,van Heerwaarden, Chiel.,van Stratum, Bart.,Hensen, Arjan.,Velzeboer, Ilona.,...&Krol, Maarten.(2022).Technical note: Interpretation of field observations of point-source methane plume using observation-driven large-eddy simulations.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(10),17.
MLA	Raznjevic, Anja,et al."Technical note: Interpretation of field observations of point-source methane plume using observation-driven large-eddy simulations".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.10(2022):17.