Data-Driven Hazardous Gas Dispersion Modeling Using the Integration of Particle Filtering and Error Propagation Detection

Zhengqiu Zhu, Sihang Qiu, Bin Chen, Rongxiao Wang and Xiaogang Qiu
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Zhengqiu Zhu: College of System Engineering, National University of Defense Technology, Changsha 410073, China
Sihang Qiu: College of System Engineering, National University of Defense Technology, Changsha 410073, China
Bin Chen: College of System Engineering, National University of Defense Technology, Changsha 410073, China
Rongxiao Wang: College of System Engineering, National University of Defense Technology, Changsha 410073, China
Xiaogang Qiu: College of System Engineering, National University of Defense Technology, Changsha 410073, China

IJERPH, 2018, vol. 15, issue 8, 1-17

Abstract: The accurate prediction of hazardous gas dispersion process is essential to air quality monitoring and the emergency management of contaminant gas leakage incidents in a chemical cluster. Conventional Gaussian-based dispersion models can seldom give accurate predictions due to inaccurate input parameters and the computational errors. In order to improve the prediction accuracy of a dispersion model, a data-driven air dispersion modeling method based on data assimilation is proposed by applying particle filter to Gaussian-based dispersion model. The core of the method is continually updating dispersion coefficients by assimilating observed data into the model during the calculation process. Another contribution of this paper is that error propagation detection rules are proposed to evaluate their effects since the measured and computational errors are inevitable. So environmental protection authorities can be informed to what extent the model output is of high confidence. To test the feasibility of our method, a numerical experiment utilizing the SF 6 concentration data sampled from an Indianapolis field study is conducted. Results of accuracy analysis and error inspection imply that Gaussian dispersion models based on particle filtering and error propagation detection have better performance than traditional dispersion models in practice though sacrificing some computational efficiency.

Keywords: atmospheric dispersion; data-driven modeling; error propagation; particle filter; Gaussian dispersion model (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2018
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