This study uses an oceanic energy budget to estimate the ocean heat transport convergence in the North Atlantic during 2005–2018. The horizontal convergence of the ocean heat transport is estimated using ocean heat content tendency primarily derived from satellite altimetry combined with space gravimetry. The net surface energy fluxes are inferred from mass-corrected divergence of atmospheric energy transport and tendency of the ECMWF ERA5 reanalysis combined with top-of-the-atmosphere radiative fluxes from the clouds and the Earth’s radiant energy system project. The indirectly estimated horizontal convergence of the ocean heat transport is integrated between the rapid climate change-meridional overturning circulation and heatflux array (RAPID) section at 26.5°N (operating since 2004) and the overturning in the subpolar north atlantic program (OSNAP) section, situated at 53°–60°N (operating since 2014). This is to validate the ocean heat transport convergence estimate against an independent estimate derived from RAPID and OSNAP in-situ measurements. The mean ocean energy budget of the North Atlantic is closed to within ± 0.25 PW between RAPID and OSNAP sections. The mean oceanic heat transport convergence between these sections is 0.58 ± 0.25 PW, which agrees well with observed section transports. Interannual variability of the inferred oceanic heat transport convergence is also in reasonable agreement with the interannual variability observed at RAPID and OSNAP, with a correlation of 0.54 between annual time series. The correlation increases to 0.67 for biannual time series. Other estimates of the ocean energy budget based on ocean heat content tendency derived from various methods give similar results. Despite a large spread, the correlation is always significant meaning the results are robust against the method to estimate the ocean heat content tendency.

本研究使用海洋能源收支来估计 2005-2018 年期间北大西洋的海洋热传输收敛。海洋热传输的水平收敛是使用主要来自卫星测高结合空间重力测量的海洋热含量趋势来估计的。净表面能量通量是根据大气能量传输的质量校正散度和 ECMWF ERA5 再分析的趋势以及来自云层和地球辐射能系统项目的大气顶部辐射通量推断出来的。间接估计的海洋热传输水平收敛是在 26.5°N 的快速气候变化-经向翻转环流和热通量阵列 （RAPID） 部分（自 2004 年开始运行）和位于 53°–60°N 的亚极地北大西洋计划 （OSNAP） 部分（自 2014 年开始运行）之间的翻转。这是为了根据 RAPID 和 OSNAP 原位测量得出的独立估计来验证海洋热传输收敛估计。北大西洋的平均海洋能源收支在 RAPID 和 OSNAP 部分之间接近 ± 0.25 PW 以内。这些部分之间的平均海洋热传递收敛为 0.58 ± 0.25 PW，这与观测到的截面传输非常吻合。推断的海洋热传输收敛的年际变率也与在 RAPID 和 OSNAP 观察到的年际变率合理一致，年时间序列之间的相关性为 0.54。对于一年两次的时间序列，相关性增加到 0.67。基于各种方法得出的海洋热含量趋势的其他海洋能源收支估计也给出了类似的结果。 尽管差异很大，但相关性始终显著，这意味着结果与估计海洋热含量趋势的方法相比是稳健的。