To study the impact of vessel pollution on the atmospheric environment of the surrounding area, we present a numerical simulation method based on regional emissions inventories. The general spatial resolution is ≥1 km and the temporal resolution is ≥1 h; parameters which are suitable for the study of larger space–time scales. In this paper, the WRF/CALMET/CALPUFF model and Automatic Identification System (AIS) data are employed to develop a single-vessel atmospheric pollution diffusion model. The goal of this research uses existing meteorological models and diffusion models to provide a simulation technology method for studying the diffusion of SO₂ from a single ship. We take the outgoing phase of ocean-going container vessels in Yantian Port as an example. It can be used to set the position of sensitive receptors near the port area. Simulations are implemented with CALPUFF and the results are compared with data derived from on-site monitoring instrument. The CALPUFF modelling domain covers an area of 925 km² with a grid spacing of 500 m. The simulation results demonstrated agreement with the measured data. The ground concentration contribution value ranged from 10 to 10² μg/m³, while the affected area was about 4–26 km² and the high-value area of the ground concentration contribution was distributed within 1–2 km from the ship track. Emissions generated by the vessels represent a considerable contribution to SO₂ pollution around the harbor areas.

中文翻译：

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深圳盐田港区单船羽流扩散模拟：方法和案例研究

为了研究船舶污染对周围地区大气环境的影响，我们提出了一种基于区域排放清单的数值模拟方法。总体空间分辨率≥1km，时间分辨率≥1h；适用于研究较大时空尺度的参数。本文采用WRF / CALMET / CALPUFF模型和自动识别系统（AIS）数据来建立单船大气污染扩散模型。本研究的目的是利用现有的气象模型和扩散模型为研究SO ₂的扩散提供一种模拟技术方法。从一艘船。我们以盐田港远洋集装箱船的出港阶段为例。它可用于在端口区域附近设置敏感受体的位置。用CALPUFF进行仿真，并将结果与​​现场监测仪器得出的数据进行比较。CALPUFF建模域覆盖925 km ²的区域，网格间距为500 m。仿真结果与实测数据吻合。地面浓度贡献值介于10-10 ²微克/米³，而受影响的面积为约4-26公里²地面浓度贡献的高价值区域分布在离船径1-2公里的范围内。船舶产生的排放物对港口地区的SO ₂污染有很大贡献。