U.S.-GLOBEC: NEP Phase IIIb-CGOA: A Synthesis of Climate-Forced Variability on Mesoscale Structure in the CGOA With Direct Comparisons to the CCS

U.S.-GLOBEC：NEP Phase IIIb-CGOA：CGOA 中尺度结构气候强迫变率的综合，并与 CCS 直接比较

• 批准号: 0630471
• 负责人: P. Ted Strub
• 金额: $ 14万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-05-01 至 2010-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0630471&HistoricalAwards=false
• 关键词: U.S.; GLOBEC; NEP; Phase; IIIb

A variety of extreme climate events occurred during the period of US GLOBEC monitoring and process studies in the NEP (1997-2004). These provide an unprecedented opportunity to examine a range of climate variability experienced by the coastal Gulf of Alaska (CGOA). By relating these climate events to regional physical and biological observations, using multiple and diverse data sources (GLOBEC observations, historical data sets and reanalyses, satellites, models), we can determine how these events affect mesoscale ocean variability in the CGOA and its related target populations (the primary goal of the NEP program). We can then directly compare these responses to those evident in the California Current System (CCS). There are two overarching goals for this project. 1) Characterize the linkages between basin-scale variability indicative of climate events and local CGOA changes in mesoscale variability that impact ecosystem pattern, structure and productivity. 2) Compare the linkages between basin-scale and local structure in the coastal Gulf of Alaska (CGOA) with those evident in the CCS, contrasting differing ecosystem responses to the same climate signals. The emphasis is on synthesis of physical circulation, upper ocean structure, nutrients and lower (planktonic) trophic levels to develop metrics based on multiple data sets spanning a wide spectrum of space and time scales. A funded GLOBEC-NEP Phase IIIa proposal to the same PIs to carry out similar analyses in the California Current System provides significant leverage, both financially and intellectually. This team of investigators represents expertise in diverse aspects of climate mesoscale interactions and data analysis. They will use correlative methods to characterize mesoscale variability in the CGOA and the concurrent basin-scale conditions during Field Program years, and then extend these comparisons back in time where possible. They will build on these correlational linkages between basin-scale and mesoscale patterns, examining the mechanisms behind these linkages from three points of view: i) comparing interannual and decadal scales of climate variability, ii) identifying and comparing different shelf regions of climate response in the CGOA, and iii) examining changes in seasonal signals. They will then compare and contrast signals observed in the CCS to those in the CGOA. BROADER IMPACTS: This project will contribute to the legacy of the GLOBEC NEP program in the form of analyses (papers), data sets, and indices for monitoring, assessing, and managing marine resources in the CGOA. By integrating and analyzing multiple data sets, the investigators will provide robust indicators of the response of the CGOA shelf to climate change, a useful tool for resource assessment and management. Improvement of ecosystem management strategies for the Alaskan shelf directly affects a large socio-economic sector of the US west coast. Two graduate students are funded under our CCS and CGOA efforts. Some of the satellite and survey data sets will also be incorporated into curriculum material that is under development within the OSU SMILE program. These materials are used in twelve Oregon high school districts with large proportions of students from groups traditionally under-represented in university science and mathematics departments. They are available for use in schools elsewhere.

在NEP（1997-2004）中，在美国Globec监测和过程研究期间发生了多种极端气候事件。这些提供了一个前所未有的机会，可以检查阿拉斯加沿海湾（CGOA）经历的一系列气候变化。通过将这些气候事件与区域物理和生物学观察相关联，使用多个和多样的数据源（Globec观测，历史数据集和重新分析，卫星，模型）将这些事件联系起来，我们可以确定这些事件如何影响CGOA中的中尺度海洋可变性及其相关目标人群（NEP计划的主要目标）。然后，我们可以将这些响应与加利福尼亚当前系统（CCS）中明显的反应进行比较。该项目有两个总体目标。 1）表征指示气候事件的盆地尺度变异性与中尺度变异性的局部CGOA变化之间的联系，从而影响生态系统模式，结构和生产力。 2）比较阿拉斯加沿海湾（CGOA）的盆地规模与局部结构之间的联系与CCS中明显的盆地之间的联系，并将不同的生态系统响应与对同一气候信号的不同。重点是综合物理循环，上海结构，养分和下（浮游）营养水平，以基于多种空间和时间尺度的多个数据集来开发指标。同一PI的Globec NEP IIIA阶段提案，在加利福尼亚当前系统中进行类似的分析，在财务上和智力上都提供了巨大的杠杆作用。该研究人员团队代表了气候中尺度互动和数据分析的各个方面的专业知识。他们将使用相关方法来表征CGOA中的中尺度变异性和在现场计划年期间的同时盆地规模条件，然后在可能的情况下将这些比较及时扩展。它们将基于盆地尺度和中尺度模式之间的这些相关性联系，从三个角度检查这些联系背后的机制：i）比较气候变化的年度和十分尺度，ii）识别并比较了CGOA中气候响应的不同货架区域，以及CGOA中的气候响应和III中的季节性信号变化。然后，他们将在CCS中比较和对比信号与CGOA中的信号。更广泛的影响：该项目将以分析（论文），数据集以及用于监视，评估和管理CGOA海洋资源的索引的形式为Globec NEP计划的遗产做出贡献。通过整合和分析多个数据集，研究人员将提供CGOA货架对气候变化的响应的强大指标，这是资源评估和管理的有用工具。改善阿拉斯加货架的生态系统管理策略直接影响美国西海岸的大型社会经济部门。两名研究生由我们的CCS和CGOA努力资助。一些卫星和调查数据集也将纳入OSU Smile计划中正在开发的课程材料中。这些材料用于十二个俄勒冈州高中区，其中大量来自大学科学和数学部门的学生的大量学生。它们可用于其他地方的学校。