Abstract: Frequent typhoons in the western North Pacific (WNP) significantly modulate air-sea CO₂ fluxes through intense dynamic and thermal processes. To systematically quantify these complex interactions, this study investigates the synoptic-scale evolution and underlying mechanisms of typhoon-induced CO₂ flux variations using a high-resolution air-sea CO₂ flux dataset reconstructed via neural networks, combined with the typhoon Track Density Function (TDF) from 1982 to 2022. The results indicate that under typhoon influence, the gas transfer coefficient and seawater CO₂ solubility increase by 11.52% and 3.11%, respectively, while the air-sea CO₂ partial pressure gradient ( \Delta f\mathrmC\mathrmO_2 ) decreases by 10.10%. Ultimately, these combined alterations lead to an average enhancement in the oceanic CO₂ efflux density of 2.58 (mmol/m²)/d during typhoon events. Spatially, the anomalies in \Delta f\mathrmC\mathrmO_2 exhibit pronounced regional divergence, characterized by positive anomalies in the South China Sea (SCS) and negative anomalies in the open Pacific. This spatial dichotomy is governed by the competition between thermal and non-thermal (dynamic mixing) effects: typhoon-induced sea surface cooling enhances CO₂ solubility, effectively reducing seawater f\mathrmC\mathrmO_2 by 2.08 µatm in the SCS and 1.97 µatm in the Pacific. Conversely, intense vertical mixing and upwelling entrain CO₂ rich subsurface waters into the surface layer, raising seawater pCO₂ by 2.85 µatm in the SCS and 0.99 µatm in the Pacific. Consequently, thermal cooling processes dominate in the Pacific basin, whereas non-thermal dynamic mixing prevails in the SCS, dictating the contrasting basin-scale \Delta f\mathrmC\mathrmO_2 variations. Mechanism decomposition further reveals that the typhoon-driven CO₂ flux variation is primarily dictated by extreme wind fields, which account for 52.62% of the total flux change. Regionally, thermal processes govern the source-sink transition zones (contributing 12.15% to the total variance), while non-thermal dynamic mixing dominates the SCS (contributing 8.83%). These findings elucidate the critical regulatory role of extreme weather events in regional carbon cycling, providing a robust scientific basis for refining regional carbon budget estimates and projecting the evolution of oceanic carbon sinks under future climate warming scenarios.