Ocean acidification in the western Arctic Ocean

北冰洋西部海洋酸化

• 批准号: 1926158
• 负责人: Wei-Jun Cai
• 金额: $ 39.13万
• 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: 2019
• 资助国家: 美国
• 起止时间: 2019-08-15 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1926158&HistoricalAwards=false
• 关键词: Ocean; acidification; western; Arctic

Rising carbon dioxide concentrations in the atmosphere, global climate change, and the sustainability of the Earth's biosphere are of great societal concern. This is true in the Arctic Ocean as it is widely viewed as one of the most sensitive regions on Earth to climate change. Understanding the carbon cycle and its underlying control mechanisms is necessary to predict how carbon flux in the Arctic Ocean will change, as well as feedbacks to the larger climate system. This project will measure components of the carbonate system to understand ocean acidification in the western Arctic Ocean through collaboration with the Chinese National Arctic Research Expedition (CHINARE) cruises along a transect from the Bering Strait to high latitude basins. The investigator will collect high resolution inorganic carbon data during summer 2020. These data, supplemented by a subset of data collected in 2019 and 2021 by CHINARE collaborators, will be used to understand the mechanisms controlling carbon cycle and fluxes and ocean acidification in the western Arctic Ocean and the changes that have occurred in recent decades. Continued data collection and data synthesis are important to understand major environmental and climate-related changes in the marine carbonate system in the Arctic Ocean. This research will enhance the infrastructure of ocean carbon research and general science education through teaching undergraduate and graduate courses at the University of Delaware. In addition, it will enhance international collaboration and public awareness of climate change and environmental issues through public outreach activities. Observing and understanding the mechanisms controlling the carbon cycle in the Arctic Ocean is necessary to predict future conditions and feedbacks to climate change. This study will test the hypothesis that high biological production and low partial pressure of carbon dioxide (pCO2) are limited to the Chukchi shelf and the sea-ice melt edge and that ice-free basin areas are characterized by high pCO2, low pH, and low carbonate saturation state. A comparison of the new data with those collected between 2008 and 2018 during CHINARE, as well as other historical data, will be used to test the hypothesis that the expansion of the basin area to north characterized by increasingly higher pCO2 and lower pH is due to the earlier timing and longer summer warming, reduced buffer capacity, and increased pCO2 in the atmosphere. Finally, water column data collected in 2020 together with earlier data will be used to test the hypothesis that the expansion of ocean acidification from subsurface to deeper depths and to higher latitudes is primarily caused by the increased input of the Pacific Winter Water into the subsurface basin driven by rapid environment change such as sea-ice retreat.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.

大气中二氧化碳浓度上升、全球气候变化以及地球生物圈的可持续性受到社会极大关注。北冰洋也是如此，因为它被广泛视为地球上对气候变化最敏感的地区之一。了解碳循环及其基本控制机制对于预测北冰洋碳通量将如何变化以及对更大气候系统的反馈是必要的。该项目将通过与中国国家北极科学考察队（CHINARE）合作，沿着从白令海峡到高纬度盆地的横断面航行，测量碳酸盐系统的组成部分，以了解北冰洋西部的海洋酸化情况。研究人员将在 2020 年夏季收集高分辨率无机碳数据。这些数据辅以 CHINARE 合作者在 2019 年和 2021 年收集的一部分数据，将用于了解控制北极西部碳循环和通量以及海洋酸化的机制海洋和近几十年来发生的变化。持续的数据收集和数据合成对于了解北冰洋海洋碳酸盐系统的主要环境和气候相关变化非常重要。这项研究将通过在特拉华大学教授本科生和研究生课程，加强海洋碳研究和普通科学教育的基础设施。此外，还将通过公共宣传活动加强国际合作和公众对气候变化和环境问题的认识。观察和了解控制北冰洋碳循环的机制对于预测未来条件和对气候变化的反馈是必要的。这项研究将检验以下假设：高生物产量和低二氧化碳分压 (pCO2) 仅限于楚科奇陆架和海冰融化边缘，而无冰盆地地区的特点是高 pCO2、低 pH 值和低 pH 值。低碳酸盐饱和状态。将新数据与 2008 年至 2018 年 CHINARE 期间收集的数据以及其他历史数据进行比较，将用于检验以下假设：以日益升高的 pCO2 和较低的 pH 为特征的流域面积向北扩展是由于夏季变暖的时间提前，时间更长，缓冲能力降低，大气中的二氧化碳分压增加。最后，2020年收集的水柱数据和早期数据将用于检验以下假设：海洋酸化从地下向更深的深度和更高的纬度扩展主要是由于太平洋冬季水流入地下盆地的增加造成的该奖项反映了 NSF 的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

RETRACTED: Rapid Acidification of the Arctic Chukchi Sea Waters Driven by Anthropogenic Forcing and Biological Carbon Recycling

撤回：人为强迫和生物碳循环驱动的北极楚科奇海水快速酸化

• DOI: 10.1029/2021gl097246
• 发表时间: 2022-02
• 期刊: Geophysical Research Letters
• 影响因子: 5.2
• 作者: Qi, Di;Wu, Yingxu;Chen, Liqi;Cai, Wei‐Jun;Ouyang, Zhangxian;Zhang, Yixing;Anderson, Leif G.;Feely, Richard A.;Zhuang, Yanpei;Lin, Hongmei;et al
• 通讯作者: et al

Seasonal Water Mass Evolution and Non‐Redfield Dynamics Enhance CO 2 Uptake in the Chukchi Sea

季节性水团演化和非雷德菲尔德动力学增强了楚科奇海的 CO 2 吸收

• DOI: 10.1029/2021jc018326
• 发表时间: 2022-08
• 期刊: Journal of Geophysical Research: Oceans
• 作者: Zhangxian, Ouyang;Collins, Andrew;Li, Yun;Qi, Di;Arrigo, Kevin R.;Zhuang, Yanpei;Nishino, Shigeto;Humphreys, Matthew P.;Kosugi, Naohiro;Murata, Akihiko;Kirchman, David L.;Chen, Liqi;Chen, Jianfang;Cai, Wei-Jun
• 通讯作者: Cai, Wei-Jun

The Changing CO 2 Sink in the Western Arctic Ocean From 1994 to 2019

1994年至2019年北冰洋西部CO 2 沉降变化

• DOI: 10.1029/2021gb007032
• 发表时间: 2022-01
• 期刊: Global Biogeochemical Cycles
• 影响因子: 5.2
• 作者: Ouyang, Zhangxian;Li, Yun;Qi, Di;Zhong, Wenli;Murata, Akihiko;Nishino, Shigeto;Wu, Yingxu;Jin, Meibing;Kirchman, David;Chen, Liqi;et al
• 通讯作者: et al

Summertime Evolution of Net Community Production and CO 2 Flux in the Western Arctic Ocean

北冰洋西部群落净生产量和 CO 2 通量的夏季演变

• DOI: 10.1029/2020gb006651
• 发表时间: 2021-03
• 期刊: Global Biogeochemical Cycles
• 影响因子: 5.2
• 作者: Ouyang, Zhangxian;Qi, Di;Zhong, Wenli;Chen, Liqi;Gao, Zhongyong;Lin, Hongmei;Sun, Heng;Li, Tao;Cai, Wei‐Jun
• 通讯作者: Cai, Wei‐Jun

Climate change drives rapid decadal acidification in the Arctic Ocean from 1994 to 2020

1994年至2020年，气候变化导致北冰洋十年间快速酸化

• DOI: 10.1126/science.abo0383
• 发表时间: 2022-09-30
• 期刊: Science
• 影响因子: 56.9
• 作者: D. Qi;Z. Ouyang;Liqi Chen;Yingxu Wu;R. Lei;Baoshan Chen;R. Feely;L. Anderson;Wenli Zhong;Hongmei Lin;A. Polukhin;Yixing Zhang;Yongli Zhang;Haibo Bi;Xinyu Lin;Yiming Luo;Yanpei Zhuang;Jian;Jianfang Chen;W. Cai
• 通讯作者: W. Cai