Modelling the Annual Cycles of Plankton Production in Subpolar Open Seas

对近极地公海浮游生物生产的年度周期进行建模

• 批准号: 9101909
• 负责人: Bruce Frost
• 金额: $ 6.66万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-10-01 至 1993-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9101909&HistoricalAwards=false
• 关键词: Modelling; Annual; Cycles; Plankton; Production

The subpolar open seas are under scrutiny for the role they may play in the global carbon dioxide (CO2) cycle. While the level of biological production and the fate of that production are central issues in the inquiry, the mechanisms controlling even the level of biological production in the subpolar open seas are not understood. This project will reformulate an ecosystem process model integrating a biological model of lower trophic level interactions, including phytoplankton production, grazing, and nutrient regeneration, into a one-dimensional physical model of the upper ocean. The model will be developed and first tested against the extensive physical and biological observations from Ocean Station P (50 Degrees N 145 Degrees W) in the open subarctic Pacific Ocean. Effects of physical-biological interactions and trophic complexity will be assessed. The model will then be applied to the other two subpolar open seas, the subarctic Atlantic and the subantarctic circumpolar ocean which, because of biological and physical processes favorable to removal of CO2 from the surface layer and its sequestration in the deep ocean, are thought to play a major role in the global CO2 cycle.

亚极地公海在全球二氧化碳循环中可能扮演的角色正受到密切关注。虽然生物生产的水平和这种生产的命运是调查的中心问题，但控制亚极地公海生物生产水平的机制尚不清楚。该项目将重新制定一个生态系统过程模型，将低营养水平相互作用的生物模型（包括浮游植物生产、放牧和营养物质再生）整合到上层海洋的一维物理模型中。该模型将根据开放的亚北极太平洋海洋站P（北纬50度，西经145度）的广泛物理和生物观测进行开发和首次测试。将评估物理-生物相互作用和营养复杂性的影响。然后，该模型将应用于另外两个亚极地公海，即亚北极大西洋和亚南极环极地海洋，由于有利于从表层去除二氧化碳并将其封存在深海的生物和物理过程，这些海洋被认为在全球二氧化碳循环中起着重要作用。