Collaborative Research: Coastal Air-Sea Fluxes of CO2: Nutrients and the Biological Pump

小行星9419322 该提案是根据一次性方案公告- NSF 93-101沿海海洋过程（CoOP）沿海海气化学通量试点研究提交的。 该公告表明，存在着一个互利的机会，可以将NSF/CoOP的研究工作与ONR赞助的计划于1995年进行的海洋边界层高级研究计划（ARI）进行协调。 该合作研究可能会补充ONR物理过程的研究，包括生物和化学的海洋学过程，旨在发展一个机械的理解海气通量。 整个科学项目将是跨学科的，NSF/CoOP致力于解决化学和生物参数，而ONR的研究重点是物理海洋学和气象参数。 这项研究是与南加州大学的合作成果。 这项工作将确定浮游植物生产力对沿海环境中涌升CO2命运的影响。 PI旨在测量pCO 2、TCO 2、NO3、NH 4、尿素、色素、POC、PON、生物硅（BSi）和Si（OH）4，并使用14 CO2、15 NO3、15 NH和15 N-尿素进行孵育，以估计和解释实验区域内的生物活性。 最终目标是确定营养物浓度如何控制“新”CO的吸收以及高地表水pCO 2浓度保持在大气水平以上的时间长度。 由于新产生的速率控制着新涌上来的CO2暴露在大气中的时间长度，因此其测量是彻底了解CO2从海洋到大气的通量转移的关键。 数据收集将通过正在进行的和站船上活动以及通过漂流和系泊进行。 将对选定的样品进行浮游植物种类测定。 最后，将从收集的数据计算碳与氮的吸收比、CO2：NO3：Si（OH）4从水柱中消失的比率以及POC：PON：BSi的比率。 拟议的工作将与其他研究人员进行的物理和气象实验相协调。

9419322 Chavez This proposal was submitted in response to a one-time Program Announcement - NSF 93-101 for the Coastal Ocean Processes (CoOP) Coastal Air-Sea Chemical Fluxes pilot study. The Announcement suggested that a mutually beneficial opportunity exists to coordinate an NSF/CoOP research effort with the ONR-sponsored Marine Boundary Layer (MBL) Advanced Research Initiative (ARI) planned for 1995. The CoOP study might complement the ONR physical processes study by encompassing biological and chemical oceanographic processes aimed at developing a mechanistic understanding of air-sea fluxes. The overall scientific project would be interdisciplinary, with the NSF/CoOP efforts addressing chemical and biological parameters, while the ONR study focuses on physical oceanographic and meteorological parameters. This research is a collaborative effort with the University of Southern California. The work will determine the effect of phytoplankton productivity on the fate of upwelled CO2 in coastal environments. The PIs intend to make measurements of pCO2, TCO2, NO3, NH4, urea, pigments, POC, PON, biogenic silicon (BSi) and Si(OH)4 and also perform incubations with 14CO2, 15NO3, 15NH, and 15N-urea to estimate and interpret biological activities within the region of the experiment. The ultimate goal is to determine how nutrient concentrations control uptake of "new" CO and the length of time that high surface water pCO2 concentrations remain above atmospheric levels. Because the rate of new production controls the length of time newly upwelled CO2 are exposed to the atmosphere, its measurement is key to a thorough understanding of the CO2 flux transfer from ocean to atmosphere. Data collection will be conducted through both underway and station shipboard activities as well as through drifters and moorings. Phytoplankton species determinations will be made on selected samples. Finally, the ratios of uptake of carbon to nitrogen, disappearance of CO2:NO3:Si( OH)4 from the water column, and POC:PON:BSi will be calculated from collected data. The proposed work will be coordinated with physical and meteorological experiments to be conducted by other researchers.