The Ce-Anomaly and Rare Earth Element Cycles in the Upper Oceans

在马尾藻海测量的稀土元素(REE)和Ce氧化速率的新剖面表明，Ce在大洋上层存在一个时变的氧化还原循环。这个循环复杂地与生物和光介导的反应有关，这些反应来自尘埃和雨水以及热层结。为了了解影响上层海洋REE和Ce氧化还原转化的生物地球化学过程，将在马尾藻海的BATS GOFS站点进行一项全面的时间序列研究。此外，还将对北大西洋的雨水、大气颗粒和上层水域中的稀土元素进行测量。

New profiles of rare earth elements (REE) and Ce oxidation rate measurements in the Sargasso Sea point to a time variable upper ocean redox cycle of cerium. This cycle is complexly linked to biological and light-mediated reactions, input from dust and rain and thermal stratification. In order to understand the biogeochemical processes operating on REE and Ce redox transformation in the upper oceans, a comprehensive time-series study at the BATS GOFS site in the Sargasso Sea will be conducted. This will be complemented with measurements of REE in rainwater, atmospheric particles and upper waters of the N. Atlantic Ocean.