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首页> 外文期刊>Journal of oceanography >Mass, Heat and Salt Balances in the Eastern Barents Sea Obtained by Inversion of Hydrographic Section Data
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Mass, Heat and Salt Balances in the Eastern Barents Sea Obtained by Inversion of Hydrographic Section Data

机译：通过水文剖面数据反演获得的东巴伦支海的质量，热量和盐分平衡

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摘要

Standard hydrological section data, collected in the eastern Barents Sea in September 1997, have been analyzed using a variational data assimilation technique. This method allows us to obtain temperature, salinity and velocity fields that are consistent with observations and dynamically balanced within the framework of a steady-state model describing large-scale nearly geostrophic circulation. Error bars of the optimized fields are computed by explicit inversion of the Hessian matrix. The optimized velocity field is in agreement with independent velocity observations derived from surface drifter trajectories in the southwestern part of the Barents Sea. Optimized fields provide the following estimates of integral characteristics of the circulation in the region: ⅰ) the North Cape current transport is 2.12 +- 0.25 Sv; ⅱ) the Karskie Vorota Strait throughflow is 0.7 +- 0.06 Sv; ⅲ) heat flux with Atlantic water is 4.7 +- 0.16-10~(11) W; ⅳ) salt import from the Atlantic Ocean is 7.41 +- 0.46-10~3 kg/s. The imbalance of the heat budget in the eastern part of the Barents Sea indicates the presence of statistically insignificant surface heat fluxes which are less than 1 W/m~2.
机译：1997年9月在巴伦支海东部收集的标准水文断面数据已使用变分数据同化技术进行了分析。这种方法使我们能够获得与观测值一致的温度，盐度和速度场，并在描述大规模近地转环流的稳态模型的框架内动态平衡。通过对Hessian矩阵进行显式求逆来计算优化字段的误差线。优化的速度场与来自巴伦支海西南部的表面漂泊轨迹的独立速度观测结果一致。优化的区域提供了对该区域环流整体特征的以下估计：ⅰ）北开普省的当前输运量为2.12 +-0.25 Sv； ⅱ）Karskie Vorota海峡通流量为0.7 +-0.06 Sv； ⅲ）大西洋水的热通量为4.7 +-0.16-10〜（11）W; ⅳ）从大西洋进口的盐为7.41±-0.46-10〜3 kg / s。巴伦支海东部的热量收支不平衡，表明存在小于1 W / m〜2的统计上无意义的表面热通量。

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