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A synthetic method for atmospheric diffusion simulation and environmental impact assessment of accidental pollution in the chemical industry in a WEBGIS context.

Ni H, Rui Y, Wang J, Cheng L - Int J Environ Res Public Health (2014)

Bottom Line: The complete workflow of the emergency response, including raw data (meteorology information, and accident information) management, numeric simulation of different kinds of accidents, environmental impact assessments, and representation of the simulation results were achieved.The main contribution of this paper is that an organizational mechanism of the model set, based on the accident type and pollutant substance; a scheduling mechanism for the parallel processing of multi-accident-type, multi-accident-substance, and multi-simulation-model; and finally a presentation method for scalar and vector data on the web browser on the integration of a WEB Geographic Information System (WEBGIS) platform.The outcomes demonstrated that this method could provide effective support for deciding emergency responses of acute chemical accidents.

View Article: PubMed Central - PubMed

Affiliation: Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing University, Nanjing 210093, China. haochenni.nju@gmail.com.

ABSTRACT
The chemical industry poses a potential security risk to factory personnel and neighboring residents. In order to mitigate prospective damage, a synthetic method must be developed for an emergency response. With the development of environmental numeric simulation models, model integration methods, and modern information technology, many Decision Support Systems (DSSs) have been established. However, existing systems still have limitations, in terms of synthetic simulation and network interoperation. In order to resolve these limitations, the matured simulation model for chemical accidents was integrated into the WEB Geographic Information System (WEBGIS) platform. The complete workflow of the emergency response, including raw data (meteorology information, and accident information) management, numeric simulation of different kinds of accidents, environmental impact assessments, and representation of the simulation results were achieved. This allowed comprehensive and real-time simulation of acute accidents in the chemical industry. The main contribution of this paper is that an organizational mechanism of the model set, based on the accident type and pollutant substance; a scheduling mechanism for the parallel processing of multi-accident-type, multi-accident-substance, and multi-simulation-model; and finally a presentation method for scalar and vector data on the web browser on the integration of a WEB Geographic Information System (WEBGIS) platform. The outcomes demonstrated that this method could provide effective support for deciding emergency responses of acute chemical accidents.

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Conceptual design framework of the organization pattern of the simulation models and calculated data.
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ijerph-11-09238-f001: Conceptual design framework of the organization pattern of the simulation models and calculated data.

Mentions: In order to get a higher level of integration, a specialized organization pattern must be designed for the simulation models and calculated data, the main design framework is shown in Figure 1. Considering the variety of pollutants, large amount of the calculated data (a long-term meteorology data and a wide cover of spatial numeric field data), and the need for scheduling simplicity, the models were organized on the basis of the pollutant substance and accident type. The models using the same pollutants, in a certain accident, are regarded as a single organizational unit. The organizational units for the same accident are aggregated to an application paradigm. It has small differences in driven parameters (namely the pollutant substance). These forms of organizational patterns require a great deal of storage space for the simulation models, but it will provide a tremendous advantage for reducing the scheduling complexity and post-maintenance workload. Hence, simple scheduling logic can be used to achieve the complex application task. Owing to the fact that the organizational units and simulation models are independent, changing the workflow for another application task can be realized by simply modifying part of the organizational unit and not the entire model set. Except for the simulation models, the initial driven (such as accident source information) and real-time meteorology data are stored in a time-series that guarantees the consistency of the accidental information and quick recall of the history accident record. The simulation results are temporary data, which only exist for data display on the terminal. The result data are usually in grid field format, which is it is very large, making it difficult to store continuously.


A synthetic method for atmospheric diffusion simulation and environmental impact assessment of accidental pollution in the chemical industry in a WEBGIS context.

Ni H, Rui Y, Wang J, Cheng L - Int J Environ Res Public Health (2014)

Conceptual design framework of the organization pattern of the simulation models and calculated data.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4199017&req=5

ijerph-11-09238-f001: Conceptual design framework of the organization pattern of the simulation models and calculated data.
Mentions: In order to get a higher level of integration, a specialized organization pattern must be designed for the simulation models and calculated data, the main design framework is shown in Figure 1. Considering the variety of pollutants, large amount of the calculated data (a long-term meteorology data and a wide cover of spatial numeric field data), and the need for scheduling simplicity, the models were organized on the basis of the pollutant substance and accident type. The models using the same pollutants, in a certain accident, are regarded as a single organizational unit. The organizational units for the same accident are aggregated to an application paradigm. It has small differences in driven parameters (namely the pollutant substance). These forms of organizational patterns require a great deal of storage space for the simulation models, but it will provide a tremendous advantage for reducing the scheduling complexity and post-maintenance workload. Hence, simple scheduling logic can be used to achieve the complex application task. Owing to the fact that the organizational units and simulation models are independent, changing the workflow for another application task can be realized by simply modifying part of the organizational unit and not the entire model set. Except for the simulation models, the initial driven (such as accident source information) and real-time meteorology data are stored in a time-series that guarantees the consistency of the accidental information and quick recall of the history accident record. The simulation results are temporary data, which only exist for data display on the terminal. The result data are usually in grid field format, which is it is very large, making it difficult to store continuously.

Bottom Line: The complete workflow of the emergency response, including raw data (meteorology information, and accident information) management, numeric simulation of different kinds of accidents, environmental impact assessments, and representation of the simulation results were achieved.The main contribution of this paper is that an organizational mechanism of the model set, based on the accident type and pollutant substance; a scheduling mechanism for the parallel processing of multi-accident-type, multi-accident-substance, and multi-simulation-model; and finally a presentation method for scalar and vector data on the web browser on the integration of a WEB Geographic Information System (WEBGIS) platform.The outcomes demonstrated that this method could provide effective support for deciding emergency responses of acute chemical accidents.

View Article: PubMed Central - PubMed

Affiliation: Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing University, Nanjing 210093, China. haochenni.nju@gmail.com.

ABSTRACT
The chemical industry poses a potential security risk to factory personnel and neighboring residents. In order to mitigate prospective damage, a synthetic method must be developed for an emergency response. With the development of environmental numeric simulation models, model integration methods, and modern information technology, many Decision Support Systems (DSSs) have been established. However, existing systems still have limitations, in terms of synthetic simulation and network interoperation. In order to resolve these limitations, the matured simulation model for chemical accidents was integrated into the WEB Geographic Information System (WEBGIS) platform. The complete workflow of the emergency response, including raw data (meteorology information, and accident information) management, numeric simulation of different kinds of accidents, environmental impact assessments, and representation of the simulation results were achieved. This allowed comprehensive and real-time simulation of acute accidents in the chemical industry. The main contribution of this paper is that an organizational mechanism of the model set, based on the accident type and pollutant substance; a scheduling mechanism for the parallel processing of multi-accident-type, multi-accident-substance, and multi-simulation-model; and finally a presentation method for scalar and vector data on the web browser on the integration of a WEB Geographic Information System (WEBGIS) platform. The outcomes demonstrated that this method could provide effective support for deciding emergency responses of acute chemical accidents.

Show MeSH
Related in: MedlinePlus