WAPflux - New Tools to Study the Fate of Phytoplankton Production in the West Antarctic Peninsula

WAPflux - 研究南极西部半岛浮游植物生产命运的新工具

• 批准号: 0838866
• 负责人: Ken Buesseler
• 金额: $ 60.5万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-15 至 2011-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0838866&HistoricalAwards=false
• 关键词: WAPflux; New; Tools; Study; Fate

AbstractBy using a tool-box of particle flux and characterization techniques appropriate to the study of particulate organic carbon fluxes out of the upper sunlit zone, WHOI researchers will attempt to evaluate the so called 'biological pump' term at the Palmer Long Term Ecological Research (PAL) site in the Western Antarctic Peninsula (WAP). The goal of these measurements is to describe the seasonal dynamics of production, export (sinking) and at-depth remineralization rates of organic matter produced in the Antarctic photic zone. This should lead to a better understanding of the biogeochemical controls on the carbon cycle in this difficult to access region. Additionally, how much of the newly fixed organic carbon is exported off the shelf, effectively driving an influx of atmospheric (including anthropogenic) CO2 to be sequestered into the deep ocean is not presently known. Comparison of prior time series sediment traps in the WAP seem to indicate smaller sinking C fluxes than other, as equally as productive Antarctic coastal regions, e.g. the Ross Sea. New observations and modeling activities will attempt to explain this discrepancy, and to account for the apparently inefficient particle export. "This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."

摘要使用粒子通量和表征技术的工具箱，适合于在阳光下山区域中研究颗粒有机碳通量，WHOI研究人员将试图在西方南极半岛（WAP）中评估Palmer长期生态研究（PAL）位点上所谓的“生物泵”术语。这些测量结果的目的是描述南极光学区域产生的有机物的生产，出口（下沉）和深入回忆率的季节性动态。 这应该可以更好地理解这个难以进入区域的碳循环的生物地球化学控制。此外，目前尚不清楚有多少新固定有机碳从架子上出口多少，有效地驱动了大气涌入（包括人为的）二氧化碳（包括人为）二氧化碳。 WAP中先前的时间序列陷阱的比较似乎表明，与其他沿海地区相同的下沉C通量较小，例如。罗斯海。 新的观察和建模活动将试图解释这一差异，并解释显然效率低下的粒子导出。 “该裁决是根据2009年《美国复苏与再投资法》（公法111-5）资助的。”