N - Isotopes of Ammonia and Ammonium in and over the Atlantic (NISAAA)

N - 大西洋内外的氨和铵的同位素 (NISAAA)

• 批准号: 403651491
• 负责人: Dr. Jens Dyckmans
• 金额: --
• 依托单位: Abteilung Bioklimatologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/403651491?language=en
• 关键词: Isotopes; Ammonia; Ammonium; over; Atlantic

N-transfer rates in the boundary layer between atmosphere and ocean play a critical role to understand global life processes and their development. The ratio of stable isotopes of N2 and nitrate were mainly used to understand transfer rates and transfer mechanisms of nitrogen compounds. We want to determine isotope ratios of atmospheric ammonia over the ocean for the first time and in conjunction N - isotope ratios in particulate ammonium, in order to evaluate sources, transports, transformations and sinks of atmospheric NH3. Isotope ratios of NH4+ and of physically dissolved NH3 x H2O in the surface water of the Atlantic will be determined to relate ocean and atmospheric NH3. On a meridional transection from 80° north to 70° south RV "Polarstern" will traverse representative maritime provinces and air-mass zones, so that a first impression can be gained on the distribution of N - isotopes in ammonia and ammonium. New constraining barriers can thus be set up with isotope ratios of N-NH3 and NH4+ for cycles and models of N - components in the earth system.

大气和海洋之间边界层的N转移率在了解全球生活过程及其发展方面起着至关重要的作用。 N2和硝酸盐的稳定同位素的比率主要用于了解氮化合物的转移速率和转移机制。我们要首次确定大气氨气在海洋上的同位素比，并以n-同位素比特别是铵的结合，以评估大气NH3的来源，运输，转化，转化和水槽。 NH4+的同位素比和物理溶解的NH3 X H2O在大西洋的地表水中将被确定与海洋和大气NH3相关。在从北向70°向南RV的子午线转导将横穿代表海洋剂量和空气质量区域的遍历，因此可以在氨和氨中获得N-同位素的分布，从而获得第一印象。因此，可以使用N -NH3和NH4+的同位素比，用于地球系统中N-组件的循环和模型。