CWT-BASED QUANTITATIVE ANALYSIS METHOD FOR EXTERNAL SOURCE OF ATMOSPHERIC PRIMARY POLLUTANT

The present invention relates to a CWT-based quantitative analysis method for an external source of an atmospheric primary pollutant, including following steps: step Sl: acquiring backward trajectory data of a research area using an airflow trajectory HYSPLIT model; step 52: gridding the backward trajectory data, importing hourly observing values of an atmospheric pollutant in the research area, and calculating a concentration-weighted trajectory (CWT); further introducing a weight factor Wij to reduce a model uncertainty caused when the trajectory data is relatively small, thereby obtaining WCWT; and step S3: calculating a CWT percentage PCWT, and further quantitatively analyzing the potential source area percentage of the atmospheric primary pollutant. The present invention can better resolves the problem that prior art cannot quantitatively reflect the external source of the atmospheric primary pollutant to provide strong support for regional management and control of atmospheric pollution treatment in the research area.