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

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。研究人员将开发涵盖整个北太平洋盆地现象的嵌套模型--例如，ENSO和与制度转变/PDO相关的特征--并纳入年际到年代际时间尺度上的可变性。他们将特别注意浮游动物，既在个体种群层面(例如，真浮游动物)，也在聚集的社区层面，并采用先进的数据同化(例如，中尺度调查)，以产生最佳的合并数据/模式产品，供全球海洋环境研究中心NEP综合工作使用。耦合的物理-生态系统模式产品将包括CCS实地试验的区域和时间的动态一致的、数据同化的后预报和多年代、流域尺度的嵌套计算(1970年至今)。通过这项研究，研究人员试图(I)量化加州当前系统的物理特征和与气候变化有关的可变性如何影响沿海地区浮游动物的生物量、生产、分布和留存和损失，以及(Ii)比较气候可变性和变化(例如厄尔尼诺-拉尼娜周期和制度变化)对CCS和CGOA海洋动物种群(Euphausiidae)的影响。这两个都直接响应了GLOBEC NEP合成计划的既定目标。此外，该项目将为多名博士生和本科生提供机会，他们要么直接与私人投资机构合作，要么参加拟议的研讨会，参与GLOBEC合成。

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.