Fig. 5: Validation of TransNet’s learned transport pathways against WRF-forecasted wind fields in Busan metropolitan area.
Comparison of WRF-forecasted wind fields and TransNet’s learned transport pathways in Busan metropolitan area on 4th January 00:00 (12:00 am). a displays wind fields as black arrows overlaid on normalized PM2.5 concentrations shown as filled circles colored according to the horizontal color bar, ranging from −0.4 (dark blue, below-average concentrations) through 0.0 (white, average) to +0.2 (dark red, above-average concentrations). Panel (b) shows the corresponding transport pathways learned by TransNet, where arrows represent the direction and magnitude of connections originating from each station. Different arrow colors (red, orange, yellow, blue) are used to visually distinguish between different transport pathways for clarity.
