Collaborative: US-GLOBEC NEP Phase IIIa-CCS: Effects of Meso- and Basin-scale Variability on Zooplankton Populations in the CCS using Data-Assimilative, Physical/Ecosystem Models

合作：US-GLOBEC NEP IIIa-CCS 阶段：使用数据同化、物理/生态系统模型观察中观和盆地尺度变异对 CCS 中浮游动物种群的影响

• 批准号: 0435574
• 负责人: Thomas Powell
• 金额: $ 18.44万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-04-15 至 2008-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0435574&HistoricalAwards=false
• 关键词: Collaborative; US; GLOBEC; NEP; Phase

The studies are designed to elucidate mechanisms that determine how physical features influence ecosystem processes. The investigators will develop nested models that encompass phenomena across the entire North Pacific basin -- e.g., ENSO and regime shift/PDO-linked features -- and incorporate variability over interannual to decadal time scales. They will direct special attention to zooplankton, at both the individual population level (e.g., euphausiids), and at the aggregated community level and employ advanced data assimilation (e.g., of the mesoscale surveys) to produce optimal merged data/model products for use by the GLOBEC NEP synthesis effort. The coupled physical-ecosystem model products will include dynamically consistent, data-assimilative hindcasts for the region and time of the CCS field experiments and multi-decadal, basin-scale, nested calculations (1970-present). With this research, the investigators seek to (i) quantify how physical features in the California Current System and variability related to climate change impact zooplankton biomass, production, distribution, and the retention and loss of zooplankton from coastal regions and (ii) compare the impacts of climate variability and change (such as El Nino-La Nina cycles and regime shifts) on marine animal populations (euphausiids) in the CCS and CGOA. Both of these respond directly to stated goals of the GLOBEC NEP synthesis program. In addition, this project will afford the opportunity for multiple Ph.D. scientists and undergraduate students, working either directly with the PIs or by attendance at the proposed workshops, to participate in GLOBEC synthesis.

这些研究旨在阐明决定物理特征如何影响生态系统过程的机制。 研究人员将开发嵌套模型，涵盖整个北太平洋盆地的现象（例如 ENSO 和政权转变/PDO 相关特征），并纳入年际至十年时间尺度的变化。 他们将特别关注个体种群水平（例如磷虾）和总体群落水平上的浮游动物，并采用先进的数据同化（例如中尺度调查）来生成最佳的合并数据/模型产品，供 GLOBEC NEP 综合工作使用。 耦合的物理生态系统模型产品将包括 CCS 现场实验的区域和时间的动态一致、数据同化的后报以及数十年、流域规模、嵌套计算（1970 年至今）。 通过这项研究，研究人员试图（i）量化加州洋流系统的物理特征和与气候变化相关的变异性如何影响浮游动物生物量、生产、分布以及沿海地区浮游动物的保留和损失，以及（ii）比较气候变异性和变化（例如厄尔尼诺-拉尼娜周期和制度转变）对CCS和 CGOA。 这两者都直接响应 GLOBEC NEP 综合计划的既定目标。此外，该项目还将提供多个博士学位的机会。科学家和本科生直接与 PI 合作或参加拟议的研讨会，参与 GLOBEC 综合。