A better understanding of recent changes of the CO2 system in the Western Arctic Ocean via field measurements from the summer 2014 CHINARE cruise

通过 2014 年夏季 CHINARE 巡航的现场测量，更好地了解北冰洋西部二氧化碳系统的近期变化

• 批准号: 1304337
• 负责人: Wei-Jun Cai
• 金额: $ 43.44万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-10-01 至 2017-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1304337&HistoricalAwards=false
• 关键词: better; understanding; recent; changes; CO2

This project would continue a successful collaboration between U.S. and Chinese scientists to study the exchange of carbon dioxide between the atmosphere and the surface waters of the Arctic Ocean. It involves the collection of high resolution underway pCO2 (partial pressure of carbon dioxide) data combined with discrete samples of water column pH, total dissolved inorganic carbon (DIC), alkalinity, calcium, nutrients, and oxygen during the Chinese Arctic Research Expedition (CHINARE) cruise in summer 2014. Together with historical data, the results will be used to constrain the variability of sea surface pCO2, air-to-sea CO2 flux, and their changes over time and to understand the underlying carbon cycling control mechanisms in the Western Arctic Ocean. The investigator hypothesizes that 1) sea surface pCO2 is highly variable in the Western Arctic Ocean and is controlled by multiple parameters that are climate-sensitive, and that current knowledge is insufficient to draw reliable conclusions regarding air-sea CO2 flux, controlling mechanisms and prediction of future changes, 2) high biological production (and CO2/DIC removal) areas have expanded from the southern areas in 1990s and early 2000s to the northern basins today along with the retreat of sea ice, and 3) riverine inorganic and organic carbon inputs have increased and they play an important role in controlling sea surface pCO2 and thus the net air-sea CO2 exchange flux in the western Arctic Ocean. This project would continue an active international collaboration and culture a Chinese Arctic carbon research team through fieldwork and data synthesis activities. The collaboration would incorporate these data into several U.S. and international databases. The project would also directly support a Ph.D. student.

该项目将继续美国和中国科学家之间的成功合作，研究大气和北冰洋表层水之间的二氧化碳交换。它涉及在中国北极科考期间收集高分辨率的pCO2（二氧化碳分压）数据以及水体pH值、总溶解无机碳（DIC）、碱度、钙、营养物和氧气的离散样本。 ）于 2014 年夏季巡航。与历史数据一起，结果将用于限制海面 pCO2、空气到海洋 CO2 通量的变化及其随时间的变化，并了解潜在的碳循环控制机制在北冰洋西部。研究者假设 1) 北冰洋西部海面 pCO2 变化很大，受多个气候敏感参数控制，目前的知识不足以就海气 CO2 通量、控制机制和预测得出可靠的结论未来的变化，2）随着海冰的消退，高生物产量（和 CO2/DIC 去除）区域已从 1990 年代和 2000 年代初的南部地区扩展到今天的北部盆地，以及 3）河流无机和有机碳输入量有所增加，对控制北冰洋西部海表pCO2 进而控制海气净CO2 交换通量发挥着重要作用。该项目将继续积极的国际合作，并通过实地考察和数据综合活动培养中国北极碳研究团队。此次合作将把这些数据纳入多个美国和国际数据库。该项目还将直接支持博士学位。学生。