Hawaii Ocean Time-series (HOT): 2023-2028

夏威夷海洋时间序列（热门）：2023-2028

• 批准号: 2241005
• 负责人: Angelicque White
• 金额: $ 998.44万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-08-01 至 2028-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2241005&HistoricalAwards=false
• 关键词: Hawaii; Ocean; Time; series; HOT

Long-term observations of ocean physics, biology, and chemistry across decades provide a powerful lens for understanding the response of the oceans to environmental change. This award will continue the Hawaii Ocean Time-series (HOT) research program, which began in 1988, for an additional five years. Continuity of these observations will improve the value of the dataset for deciphering how natural and human-influenced climate signals affect ecosystem structure in the Pacific Ocean. All HOT program data are publicly available and are frequently used by researchers and policy makers around the world. HOT also serves as (1) a testbed for the development of new sensors and methodologies, (2) a calibration/validation site, (3) an invaluable training ground that attracts students and researchers from around the globe, and (4) a forum for international collaboration and capacity building.The proposed research will rely on shipboard observations and experiments conducted on ten separate five-day expeditions per year along with near-continuous moored platform measurements of air-sea interactions, ocean mixing, and physical characteristics of the deep sea. Observations include biogeochemical and physical measurements required for continued assessment of dynamics in ocean carbon and nutrient pools and fluxes, plankton community structure, ecosystem productivity, and inherent optical properties of the water column. The major program goals and objectives over the next 5 years remain as in prior years and include: (1) sustain high quality, time-resolved oceanographic measurements on the interactions between ocean-climate and ecosystem variability in the North Pacific Subtropical Gyre (NPSG), (2) quantify time-varying (seasonal to decadal) changes in reservoirs and fluxes of carbon and associated bioelements (nitrogen, phosphorus, and silicon), (3) constrain processes controlling air-sea carbon exchange, rates of carbon transformation through the planktonic food web, and fluxes of carbon into the ocean’s interior, (4) extend to 40 years a climatology of hydrographic and biogeochemical dynamics from which to gauge anomalous or extreme changes to the NPSG habitat, forming a multi-decadal baseline from which to decipher natural and anthropogenic influences on the NPSG ecosystem, (5) continue to provide scientific and logistical support to ancillary programs that benefit from the temporal context, interdisciplinary science, and regular access to the open sea afforded by HOT program occupation of Station ALOHA, including projects implementing, testing, and validating new methodologies and transformative ocean sampling technologies, and (6) provide unique training and educational opportunities for the next generation of ocean scientists.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

几十年来对海洋物理、生物和化学的长期观测为了解海洋对环境变化的反应提供了一个强有力的透镜。该奖项将继续夏威夷海洋时间序列（HOT）研究计划，该计划始于1988年，为期五年。这些观测的连续性将提高数据集的价值，以破译自然和人类影响的气候信号如何影响太平洋的生态系统结构。所有HOT计划数据都是公开的，并经常被世界各地的研究人员和政策制定者使用。HOT还可作为（1）开发新传感器和方法的试验平台，（2）校准/验证站点，（3）吸引来自地球仪的学生和研究人员的宝贵培训场所，以及（4）一个国际合作和能力建设的论坛。拟议的研究将依赖于在十个独立的五个船上进行的观测和实验，每年进行为期一天的考察沿着在系泊平台上对海气相互作用、海洋混合和深海物理特性进行近乎连续的测量。观测包括持续评估海洋碳和营养库及通量动态、浮游生物群落结构、生态系统生产力和水柱固有光学特性所需的生物地球化学和物理测量。未来5年的主要计划目标和目的与前几年相同，包括：（1）持续对北太平洋副热带环流（NPSG）海洋气候和生态系统变率之间的相互作用进行高质量、时间分辨的海洋学测量，（2）量化（季节到十年）碳库和碳通量及相关生物元素的变化（氮，磷和硅），（3）限制控制海气碳交换的过程，碳通过浮游食物网的转化率，以及碳进入海洋内部的通量，（4）将水文和地球化学动力学的气候学延长到40年，从中测量NPSG栖息地的异常或极端变化，形成一个数十年的基线，从中解读自然和人为对NPSG生态系统的影响，（5）继续为受益于时间背景的辅助计划提供科学和后勤支持，跨学科的科学，并定期进入公海提供HOT计划占领站ALOHA，包括项目实施，测试和验证新的方法和变革性的海洋采样技术，以及（6）为下一代海洋科学家提供独特的培训和教育机会。该奖项反映了NSF的法定使命，通过使用基金会的知识价值和更广泛的影响审查标准进行评估，