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.

对海洋物理学的长期观察和数十年的化学作品为理解侵略性变化提供了强大的镜头。五年的数据集对自然和人类影响的伴侣的价值影响了太平洋的生态系统，这是世界各地的n个宝贵的培训。每年进行五天的探险，以及近乎连续的系泊台，海洋混合和深海的物理特征。和固有的光学目标。 ），（2）量化碳和相关生物元素（氮，磷和硅）的储层和通量变化的时间变化（季节性到十年）的变化，可控制空气碳汇率，碳转化的浮游食品网和碳转化的速度（4）将碳的一些通量延伸至40年，直至40年，水文和生物地球化学物质的气候从衡量到量规或NPSG栖息地的极端变化，形成了从车轮到破译的自然和人为影响NPSG的多年基线生态系统，（5）继续对受益于时间上环境科学受益的辅助计划的科学和后勤支持，以及一些常规的访问热计划占领的公海，依靠新方法和变革性海洋采样技术，以及（6）为下一个海洋科学家提供独特的培训和教育机会。该奖项反映了NSF'Stutory，值得支持Thendation的Ntellectual功绩和更广泛的影响标准。