标题： 热酸钙化导致的季节性振荡在不断上升的基林曲线中的原因 显示英文标题

标题： A thermal acid calcification cause for seasonal oscillations in the increasing Keeling curve

摘要： 大气二氧化碳水平为何会在莫纳罗亚测量时出现季节性上升和下降？ 本研究探讨了热酸钙化（TAC）假说，该假说认为海表面温度的季节性变化会触发由钙化引起的酸性pH值驱动的CO2排放。 利用海洋学数据，我们建模分析了温度如何影响溶解无机碳，包括CO2、碳酸氢盐和碳酸盐。 我们的发现揭示，海水变暖通过促进碳酸钙的形成吸收大气中的CO2，使海水酸化，并在晚秋和冬季增加向大气中释放CO2，此时大气中的CO2含量达到最高。 模型预测，由于钙化而非陆地过程，年均CO2会上升2 ppmv。 季节性pH值波动0.04个单位证实了这一机制。 TAC假说表明，持续的海洋变暖，而不仅仅是化石燃料，导致了CO2水平的上升，呼吁更深入地研究海洋碳动力学。 显示英文摘要

摘要： Why do atmospheric carbon dioxide levels rise and fall seasonally measured on Mauna Loa? This study explores the thermal acid-calcification (TAC) hypothesis, suggesting that seasonal temperature shifts in surface seawater trigger acid pH-driven CO2 emissions caused by calcification. Using oceanographic data, we modeled how temperature affects dissolved inorganic carbon including CO2, bicarbonate, and carbonate. Our findings reveal that warming waters absorb atmospheric CO2 by promoting calcium carbonate formation, acidifying seawater and boosting CO2 release to the atmosphere in late autumn and winter, when atmospheric CO2 becomes highest. The model predicts a net annual CO2 rise of 2 ppmv, driven by calcification rather than land-based processes. Seasonal pH swings of 0.04 units corroborate this mechanism. The TAC hypothesis indicates that continued ocean warming, not just fossil fuels, contribute to rising CO2 levels, calling for deeper investigation into marine carbon dynamics.