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

这些研究旨在阐明确定物理特征如何影响生态系统过程的机制。研究人员将开发包含整个北太平洋盆地现象的嵌套模型，例如ENSO和状态转移/ pdo相关特征，并将年际到十年时间尺度的变化纳入其中。它们将特别注意浮游动物，在个别种群水平（例如，小鳞虫）和总体群落水平，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动态一致的数据同化后的区域和时间的CCS现场实验和多年代际、盆地尺度、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可变性如何影响沿海地区浮游动物的生物量、生产、分布、保留和损失；（ii）比较气候可变性和变化（如厄尔尼诺-拉尼娜周期和政权转变）对CCS和CGOA海洋动物种群（euhausiids）的影响。这两者都直接响应了GLOBEC NEP综合计划的既定目标。此外，该项目将为多名博士科学家和本科生提供机会，他们可以直接与pi合作，也可以参加拟议的研讨会，参与GLOBEC的合成。

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.