Dynamic ship emission list establishing method based on AIS data

Abstract

The invention discloses a dynamic ship emission list establishing method based on AIS data, which comprises the following steps of: obtaining AIS data, and integrating a ship information database; analyzing the time step length of the AIS data, dynamically reading the AIS data, and cleaning the abnormal AIS data; identifying and supplementing the cleaned AIS data, dynamically identifying emissionfactors, and performing emission estimation in combination with dynamic emission calculation to obtain dynamic ship emission characterization; and making AIS trajectory analysis according to the dynamic ship emission characteristics, correcting dynamic ship emission characteristics according to different missing conditions to acquire a repaired and supplemented ship navigation trajectory. Quasi-real-time ship emission dynamic characteristics are realized, the ship emission characteristic precision and accuracy are improved, technical support can be provided for fine management, and accuracy ofair quality forecasting and early warning is improved.

Description

technical field [0001] The invention relates to the research field of environmental protection and air pollution prevention and control, in particular to a method for establishing a dynamic ship discharge inventory based on AIS data. Background technique [0002] In recent years, with the development of the shipping industry, ship emissions have increasingly become an important source of emission contribution. Ship emissions have aggravated air pollution in ports and coastal areas, endangering the healthy life of coastal and inland residents and the sustainable development of the ecological environment. One of the key and difficult points in the prevention and control of urban air pollution is the need to implement more refined management of ship emissions. Ship emissions have basic characteristics such as dynamic emissions, multi-source emissions, and strong mobility, and are widely distributed with large spatial differences. Ship emission inventory is the basic research o...

AI Technical Summary

Problems solved by technology

However, limited by the establishment of ship emission inventory technology and the quality of AIS data, the precision and accuracy of ship emission inventory is limited

At present, the establishment of ship emission inventories mostly uses historical static data, and some studies using AIS data have failed to take advantage of the dynamic reporting of AIS data, and cannot characterize ship emissions in quasi-real time; calculation of ship emissions based on AIS data and dynamic methods is currently the mainstream research However, due to the obstruction of AIS data communication and other reasons, the error and lack of ship track points will affect the characterization of ship emissions and space-time characteristics. At present, there are few studies on the characterization of ship emissions combined with AIS data correction.

[0003] At present, many research institutions have invested a lot of research on AIS data to represent ship emissions. For example, the Chinese invention patent with application number 201911274146.4 involves a method for calculating the emission and spatial distribution of air pollutants from ships based on AIS data, and the Chinese invention patent with application number 201710577047.8 It involves a calculation method of high-precision ship pollutant discharge based on AIS data, all of which are based on historical static AIS data to calculate ship discharge, which fails to take advantage of the dynamic reporting of AIS data to achieve quasi-real-time dynamic representation of ship discharge, and does not In order to correct the AIS data and affect the accuracy of spatio-temporal representation of ship emissions

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