<![CDATA[Sea level rise (SLR) is one of the most significant impacts of climate change, increasing the vulnerability of coastal regions to natural hazards, including tsunamis. Lhokseumawe City, Aceh Province, Indonesia, is a strategic coastal area characterized by ports, energy facilities, and densely populated settlements, making it highly susceptible to the combined effects of tsunami events and rising sea levels. SLR increases nearshore water depth, allowing tsunami waves to propagate farther inland, expand inundation areas, and reduce wave arrival times, thereby increasing potential risks to communities and critical infrastructure. This study investigates the impact of sea level rise on tsunami inundation characteristics in Lhokseumawe City using the Cornell Multi-grid Coupled Tsunami Model (COMCOT). A tsunami source was generated based on a Mw 9.2 megathrust earthquake scenario in the Sumatra–Andaman subduction zone. Simulations were conducted using bathymetric data from DEMNAS, topographic data from BATNAS, and sea level rise scenarios of 1.0 m and 2.0 m. The analysis focused on changes in tsunami wave propagation, arrival time, and inundation extent. The simulation results reveal that sea level rise significantly increases tsunami inundation areas, particularly in the Pusong area of Banda Sakti District. In addition, SLR reduces tsunami arrival time along the Lhokseumawe coast from approximately 80 minutes to 70 minutes, thereby decreasing the available evacuation time. These findings emphasize the necessity of incorporating sea level rise scenarios into tsunami hazard assessments to support effective disaster risk reduction strategies and climate-resilient coastal planning.]]>
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