globalchange  > 气候变化与战略
DOI: 10.1016/j.atmosenv.2020.117579
论文题名:
An accurate strategy to retrieve multiple source emissions in the atmosphere
作者: Albani R.A.S.; Albani V.V.L.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 233
语种: 英语
英文关键词: Atmospherics ; Earth atmosphere ; Emission sources ; Gradient Descent method ; Multiple source ; Number of sources ; Realistic modelling ; Simultaneous estimation ; Splitting strategies ; Stabilized finite element ; Gradient methods ; accuracy assessment ; algorithm ; atmospheric pollution ; finite element method ; pollutant source ; strategic approach ; algorithm ; article ; atmospheric dispersion ; field study ; finite element analysis
学科: Atmospheric dispersion ; Finite element method ; Gauss-seidel-like algorithm ; Multiple source estimation ; Tikhonov-type regularization
中文摘要: We propose a new methodology to retrieve multiple point emission sources in the atmosphere. To allow more realistic modelling, the dispersion problem is solved by a stabilized finite element formulation. The simultaneous estimation of the source strengths, their locations and the total number of sources is made employing Tikhonov-type regularization, with a composite data misfit function. The corresponding minimization of the Tikhonov-type functional is carried out by a combination of a splitting strategy algorithm with a gradient-descent method. We illustrate the accuracy of the proposed technique by using Fusion Field Trials 2007 (FFT07) data. © 2020 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160732
Appears in Collections:气候变化与战略

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作者单位: Polytechnic Institute, Rio de Janeiro State University, Nova Friburgo, RJ 28.625-570, Brazil; Dept of Mathematics, Federal University of Santa Catarina, Campus Trindade, Florianopolis, SC 88.040-900, Brazil

Recommended Citation:
Albani R.A.S.,Albani V.V.L.. An accurate strategy to retrieve multiple source emissions in the atmosphere[J]. Atmospheric Environment,2020-01-01,233
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