The effects of stratification and Yucatan Current (YC) transport on the dynamics of the Loop Current (LC) and Loop Current Eddies (LCEs) are studied using a primitive equation, 2½ nonhomogeneous layered model, which reproduces the main dynamical features of the upper ocean circulation in the Gulf of Mexico (GoM). The analysis considers the observed variations in stratification and YC transport, and their expected changes due to climate change. The study is based on a set of long‐term simulations considering the combination of seven stratification configurations with seven transport configurations resulting in 49 cases. The LCE shedding period and diameter (LCE metrics) and kinetic energy, eddy kinetic energy, available potential energy, eddy available potential energy, and the energy Burger number (energy metrics) are analyzed. The stratification and transport contribute to the current and future LC and LCE variability, with their dynamics being more sensitive to transport variations than to stratification variations. The LCE detachment is associated with the increase in the mass of the LC and its available potential energy budget, which is a primary determinant for the LC and LCE dynamics and a condition for eddy shedding. For the expected changes due to climate change, the LCE response is contrary: larger stratification causes increments in the LCE metrics and energy metrics, except the energy Burger number that decreases; conversely, smaller transport causes the opposite response. A combined occurrence of increased stratification and reduced transport, as expected with climate change, causes decrements in the LCE metrics and energy in the GoM.

中文翻译：

---

分层和尤加坦电流输运对环流涡流脱落过程的影响

使用原始方程2½非均匀分层模型研究了分层和尤卡坦流（YC）传输对回路电流（LC）和回路电流涡流（LCE）动力学的影响，该模型再现了上层海洋的主要动力学特征墨西哥湾（GoM）的环流。该分析考虑了观察到的分层和YC运移变化，以及由于气候变化而产生的预期变化。该研究基于一组长期模拟，其中考虑了七个分层配置与七个运输配置的组合，导致49例。分析了LCE的脱落周期和直径（LCE度量），动能，涡动能，可用势能，涡可用势能和能量汉堡数（能量度量）。分层和运输会导致当前和未来的LC和LCE变异，其动态对运输变化的敏感性要大于对分层变异的敏感性。LCE的脱离与LC的质量及其可用势能预算的增加有关，这是LC和LCE动态的主要决定因素，也是涡流脱落的条件。对于由于气候变化而引起的预期变化，LCE的反应是相反的：更大的分层会导致LCE指标和能量指标的增加，但能量汉堡数会减少；相反，较小的运输会引起相反的响应。正如气候变化所预期的那样，分层增加和运输减少共同发生，导致LCE指标和GoM中的能源减少。