This study evaluates how Antarctic ice sheet surface mass balance has evolved over the past 125 years and its deep connections to ocean cooling, wind patterns, and dynamic ice loss. By integrating Earth System modeling with paleoclimate data, the study reconciles observed and modeled trends in snowfall, sea surface temperatures, and large-scale climate variability. The findings not only explain long-standing climate model discrepancies but also confirm an anthropogenic increase in Antarctic snowfall, with implications for global sea level rise and regional climate change.