Inorganic nutrient measurements in the Benguela Upwelling System during METEOR cruise M157

Upwelling systems are significant sources of atmospheric nitrous oxide (N₂O). The Benguela Upwelling System is one of the most productive regions worldwide and a temporally variable source of N₂O. Strong O₂ depletions above the shelf are favoring periodically OMZ formations. We aimed to assess underlying N₂O production and consumption processes on different temporal and spatial scales during austral winter in the Benguela Upwelling System, when O₂-deficiency in the water column is relatively low.

上升流系统是大气中一氧化二氮（N₂O）的重要来源。本格拉上升流系统（Benguela Upwelling System）是全球生产力最高的区域之一，也是N₂O的时间动态变化源。陆架上方强烈的氧气（O₂）消耗会周期性地促进海洋缺氧区（OMZ）的形成。我们旨在评估本格拉上升流系统南半球冬季期间（此时水体中的缺氧程度相对较低），不同时间和空间尺度下N₂O产生与消耗的潜在过程。