Extreme precipitation-driven hydrologic connectivity and hydrochemical dynamics in a monsoonal mountain catchment: Carbonate weathering dominance and storm-activated nitrate contamination

Key Points

• Storm-driven precipitation enhances hydrologic connectivity, leading to increased nitrate contamination in runoff.
• Key evidence shows pronounced carbonate weathering dominance, particularly during extreme precipitation events.
• Analysis of hydrological and hydrochemical data across a monsoonal mountain catchment reveals complex dynamics.
• The findings highlight potential implications for water quality management and ecosystem health in vulnerable regions.