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

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：卫星观察到的海洋气候变化1y1y PIS将随着时间的流逝而扩展并扩展范围内的卫星数据开发和基于卫星的基于卫星的海洋气候变异性分析（NEP），在全球飞行员项目阶段（1997-00）开始。 总体科学问题是要表征和量化NEP中的可变性主要模式，因为卫星测量表面传输，温度和叶绿素模式所体现。 我们的分析使用了加利福尼亚州电流（CCS）和阿拉斯加沿海湾（CGOA）（CGOA）的Globec目标研究区域的合并卫星数据产品解决多个空间和时间尺度。GlobecNEP现场研究都需要空间和时间上下文。 该项目的主要目的是在每个过程研究地点量化小规模和中尺度循环模式的季节性和年际变异性程度，并将这种变异性的变化与当地风和盆地量表循环的强迫强度相关联与季节性和年际变化。 该目标将通过对使用卫星测量的空间时间尺度进行系统分析来实现。 PIS将定义和量化a）小型事件规模的沿海特征，例如前部，涡流和融合（50 m -100 km）。 这些特征被认为对于陆架上的局部目标物种的局部成功 /生存至关重要，架子上的中尺度循环 /季节性变异性，上升的前线，沿海喷气式飞机，浮力羽毛和涡流（10公里-500公里） - 这些也影响了人口的运输和保留； c）在盆地和年际量表（100 km -10,000 km）的强迫和过程。 第二个相关的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。该项目的特定目标分为卫星海洋学的两个方面，这三个PI具有丰富的经验：1）在NEP区域中以多个尺度获取，过程，子集，QC和存档卫星数据，并将这些数据电子用于该计划的其他数据； 2）分析这些数据以及辅助数据，以解决盆地和近岸尺度的Globec研究目标。 核心数据集是L KM和4 km分辨率和合成孔径雷达（SAR）图像的高度计AVHRR和NASA SEAWIFS数据。 这些补充了模型和浮标，潮汐量规海平面以及原位数据。 与进行现场测量的研究人员的密切合作将将卫星数据分析中确定的量表和模式联系起来，与3D原位过程相关。