GLOBEC NEP: Satellite-Observed Ocean Climate Variability

GLOBEC NEP：卫星观测的海洋气候变化

• 批准号: 0000900
• 负责人: P. Ted Strub
• 金额: $ 112.92万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-02-01 至 2006-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0000900&HistoricalAwards=false
• 关键词: GLOBEC; NEP; Satellite; Observed; Ocean

GLOBEC NEP: Satellite-Observed Ocean Climate Variabili1yThe PIs will extend in time and expand in scope the satellite data development and satellite-based analyses of ocean climate variability in the Northeast Pacific (NEP), begun during the GLOBEC Pilot Project phase (1997 - 00). The overall scientific problem is to characterize and quantify the dominant modes of variability in the NEP as embodied by satellite measurements of surface transports, temperature and chlorophyll patterns. Our analyses address multiple spatial and temporal scales using merged satellite data products over GLOBEC target study regions in both the California Current (CCS) and the coastal Gulf of Alaska (CGOA).GLOBEC NEP field studies require both spatial and temporal context. The primary goal of this project is to quantify the degree of seasonal and interannual variability in small scale and mesoscale circulation patterns in each of the process study sites, and to relate changes in this variability to the seasonal and interannual changes in the strength of forcing by local winds and basin scale circulation. This goal will be accomplished through a systematic analysis of spatial temporal scales utilizing satellite measurements. The PIs will define and quantify a) small event-scale coastal features such as fronts, eddies and convergences (50 m - 100 km). These features are thought to be critical to local success/ survival of GLOBEC target species, b) mesoscale circulation / seasonal variability over the shelf, upwelling fronts, coastal jets, buoyant plumes and eddies (10 km - 500 km) - these also affect transport and retention of populations; and c) forcing and processes at basin and interannual scales (100 km - 10,000 km). A second, related goal is to quantify changes in the timing and strength of seasonal transitions in both study regions. Specific objectives of the project are divided into two aspects of satellite oceanography, with which the three PIs have extensive experience: 1) Acquire, process, subset, QC, and archive satellite data in the NEP region at multiple scales and make these data electronically available to others in the program; 2) analyze these data, in conjunction with ancillary data, to address GLOBEC research goals at basin- meso- and nearshore scales. The core data sets are altimeter fields, NOAA AVHRR and NASA SeaWiFS data at both l km and 4 km resolution and synthetic aperture radar (SAR) imagery. These are supplemented with model and buoy winds, tide gauge sea levels and in situ data. Close collaboration with investigators carrying out field measurements will link scales and patterns determined in the satellite data analyses to 3D in situ processes.

GLOBEC NEP：卫星观测的海洋气候变化 PI 将延长东北太平洋 (NEP) 海洋气候变化卫星数据开发和卫星分析的时间和范围，这些分析是在 GLOBEC 试点项目阶段 (1997 - 00) 开始的）。 总体科学问题是表征和量化 NEP 的主要变化模式，如表面传输、温度和叶绿素模式的卫星测量所体现的那样。 我们的分析使用加利福尼亚洋流 (CCS) 和阿拉斯加湾 (CGOA) 的 GLOBEC 目标研究区域的合并卫星数据产品来解决多个空间和时间尺度的问题。GLOBEC NEP 实地研究需要空间和时间背景。 该项目的主要目标是量化每个过程研究地点小尺度和中尺度环流模式的季节性和年际变化程度，并将这种变化的变化与强迫强度的季节和年际变化联系起来局地风和盆地尺度环流。 这一目标将通过利用卫星测量对时空尺度进行系统分析来实现。 PI 将定义和量化 a) 小事件规模的沿海特征，例如锋面、涡流和辐合（50 m - 100 km）。 这些特征被认为对于 GLOBEC 目标物种的局部成功/生存至关重要，b) 陆架上的中尺度环流/季节变化、上升流锋面、沿海急流、浮力羽流和涡流（10 公里 - 500 公里）——这些也会影响运输和保留人口； c) 流域和年际尺度（100 km - 10,000 km）的强迫和过程。 第二个相关目标是量化两个研究区域季节性转变的时间和强度的变化。该项目的具体目标分为卫星海洋学两个方面，三位PI在这方面拥有丰富的经验：1）获取、处理、子集、质量控制和存档NEP区域多尺度卫星数据，并以电子方式提供这些数据计划中的其他人； 2) 结合辅助数据分析这些数据，以实现盆地、中观和近岸尺度的 GLOBEC 研究目标。 核心数据集包括高度计字段、1 公里和 4 公里分辨率的 NOAA AVHRR 和 NASA SeaWiFS 数据以及合成孔径雷达 (SAR) 图像。 这些数据还补充有模型和浮标风、验潮仪海平面和现场数据。 与进行现场测量的研究人员密切合作，将卫星数据分析中确定的尺度和模式与 3D 现场过程联系起来。