Collaborative Research: Arctic time series measurements of atmospheric O2/N2 ratio, CO2 concentration, and CO2 isotopes in relation to changing carbon cycling and biogeochemistry

合作研究:大气 O2/N2 比率、CO2 浓度和 CO2 同位素与碳循环和生物地球化学变化相关的北极时间序列测量

基本信息

项目摘要

This project supports the continuation of long-term measurements of atmospheric carbon dioxide (CO2) and related species such as oxygen (O2) via flasks collected at three Arctic sites. These measurements comprise the longest continuous geochemical records of several key atmospheric trace gases and have direct relevance for understanding climate changes and related changes in land and ocean ecosystems at high northern latitudes. CO2 not only is a critical greenhouse gas but its variations are diagnostic of photosynthesis and respiration of land ecosystems, such as tundra and forests, which support the food-web and health of Arctic ecosystems. Related measurements of atmospheric species, such as O2 and the isotopes of CO2, complement and expand this knowledge base. Previous measurements of atmospheric CO2 reveal clearly that dramatic changes have occurred in the cycling of carbon at high latitudes. Larger changes are likely to occur in the decades ahead and models alone cannot inform our understanding of those outcomes. Hence, atmospheric measurements comprise a key element of an observing system that will allow understanding of how fast and in what respect these systems are changing. This project not only continues long-term flask measurements but also initiates new atmospheric measurements through in situ instrumentation to be installed at Utqiagvik, Alaska. This project supports flask collections at Cold Bay and Utqiagvik, Alaska, and at Alert Station on Ellesmere Island. The flasks will be returned to the Scripps Institution of Oceanography where they will be analyzed for CO2 concentration, the stable isotopes of CO2, and the O2/N2 and Ar/N2 ratios. The project will also support the installation and operation of an in situ O2/N2 analyzer system at Utqiagvik, Alaska. This new installation will enable the study of O2 exchanges with the nearby Chukchi, Beaufort, and Bering Seas based on the ability to resolve short-term signals of regional origin. Augmenting these data collection efforts, this project will support data analysis to detect and quantify long-term changes in the measured atmospheric trace gases, with a particular focus on changes in seasonal cycles. In addition, it will support comparisons between the observed variations in O2 at Utqiagvik with estimates of the expected variations simulated in state-of-the art numerical models.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.
该项目支持继续通过在北极三个地点收集的烧瓶对大气二氧化碳(CO2)和氧(O2)等相关物种进行长期测量。这些测量包括几个关键大气痕量气体的最长连续地球化学记录,并与了解气候变化和北纬高纬度陆地和海洋生态系统的相关变化有直接关系。二氧化碳不仅是一种关键的温室气体,而且它的变化是陆地生态系统光合作用和呼吸作用的诊断指标,例如苔原和森林,这些生态系统支撑着北极生态系统的食物网和健康。对大气物种的相关测量,如O2和二氧化碳的同位素,补充和扩展了这一知识库。以前对大气二氧化碳的测量清楚地表明,高纬度地区的碳循环发生了戏剧性的变化。未来几十年可能会发生更大的变化,单靠模型不能帮助我们理解这些结果。因此,大气测量是观测系统的一个关键要素,它将使人们能够了解这些系统正在以多快的速度和在什么方面变化。该项目不仅继续进行长期的烧瓶测量,还通过安装在阿拉斯加乌特恰格维克的现场仪器启动新的大气测量。该项目支持在阿拉斯加的冷湾和乌特恰格维克以及埃尔斯米尔岛的警报站收集烧瓶。这些烧瓶将被送回斯克里普斯海洋研究所,在那里将对它们进行二氧化碳浓度、二氧化碳稳定同位素以及O2/N2和Ar/N2比率的分析。该项目还将支持在阿拉斯加乌特恰格维克现场安装和运行氧气/氮气分析器系统。这一新装置将能够基于解析区域来源的短期信号的能力,研究与附近楚科奇、博福特和白令海的O2交换。为了加强这些数据收集工作,该项目将支持数据分析,以检测和量化测量到的大气痕量气体的长期变化,并特别注重季节性周期的变化。此外,它还将支持在乌特恰格维克观测到的氧气变化与在最先进的数字模型中模拟的预期变化的估计之间的比较。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

期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
An Atmospheric Constraint on the Seasonal Air‐Sea Exchange of Oxygen and Heat in the Extratropics
大气对季节性空气的限制——温带地区氧气和热量的海洋交换
  • DOI:
    10.1029/2021jc017510
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Morgan, Eric J.;Manizza, Manfredi;Keeling, Ralph F.;Resplandy, Laure;Mikaloff‐Fletcher, Sara E.;Nevison, Cynthia D.;Jin, Yuming;Bent, Jonathan D.;Aumont, Olivier;Doney, Scott C.
  • 通讯作者:
    Doney, Scott C.
A mass-weighted isentropic coordinate for mapping chemical tracers and computing atmospheric inventories
用于绘制化学示踪剂和计算大气库存的质量加权等熵坐标
  • DOI:
    10.5194/acp-21-217-2021
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    6.3
  • 作者:
    Jin, Yuming;Keeling, Ralph F.;Morgan, Eric J.;Ray, Eric;Parazoo, Nicholas C.;Stephens, Britton B.
  • 通讯作者:
    Stephens, Britton B.
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Ralph Keeling其他文献

Recent and future trends in atmospheric radiocarbon
大气放射性碳的近期和未来趋势
  • DOI:
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Heather Graven;Ryo Fujita;Ralph Keeling;Samar Khatiwala;Joeri Rogelj;Xiaomei Xu
  • 通讯作者:
    Xiaomei Xu
Seasonal CO2 amplitude in northern high latitudes
北半球高纬度地区的季节性二氧化碳振幅
  • DOI:
    10.1038/s43017-024-00600-7
  • 发表时间:
    2024-10-31
  • 期刊:
  • 影响因子:
    71.500
  • 作者:
    Zhihua Liu;Brendan M. Rogers;Gretchen Keppel-Aleks;Manuel Helbig;Ashley P. Ballantyne;John S. Kimball;Abhishek Chatterjee;Adrianna Foster;Aleya Kaushik;Anna-Maria Virkkala;Arden L. Burrell;Christopher Schwalm;Colm Sweeney;Edward A. G. Schuur;Jacqueline Dean;Jennifer D. Watts;Jinhyuk E. Kim;Jonathan A. Wang;Lei Hu;Lisa Welp;Logan T. Berner;Marguerite Mauritz;Michelle Mack;Nicholas C. Parazoo;Nima Madani;Ralph Keeling;Roisin Commane;Scott Goetz;Shilong Piao;Susan M. Natali;Wenjuan Wang;Wolfgang Buermann;Xanthe Walker;Xin Lin;Xuhui Wang;Yuming Jin;Kailiang Yu;Yangjian Zhang
  • 通讯作者:
    Yangjian Zhang
nitial Results of an Intercomparison of AMS-Based Atmoshperic14CO2 Measurements.
基于 AMS 的 Atmoshperic14CO2 测量结果相互比较的初步结果。
  • DOI:
  • 发表时间:
    2013
  • 期刊:
  • 影响因子:
    8.3
  • 作者:
    John Miller;Scott Lehman;Chad Wolak;Jocelyn Turnbull;Gregory Dunn;Heather Graven;Ralph Keeling;Harro A J Meijer;Anita Th Aerts-Bijma;7名略, Toshio Nakamura;6名略
  • 通讯作者:
    6名略

Ralph Keeling的其他文献

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{{ truncateString('Ralph Keeling', 18)}}的其他基金

Measurement of Atmospheric He/N2 (Helium to Nitrogen) Ratio as a Tracer of Stratospheric-Tropospheric Exchange
测量大气 He/N2(氦气与氮气)比率作为平流层-对流层交换的示踪剂
  • 批准号:
    1940361
  • 财政年份:
    2019
  • 资助金额:
    $ 207.89万
  • 项目类别:
    Continuing Grant
Collaborative Research: Measuring Carbon and Climate Tracers on the Atom Airborne Campaigns
合作研究:测量原子机载运动中的碳和气候示踪剂
  • 批准号:
    1623748
  • 财政年份:
    2016
  • 资助金额:
    $ 207.89万
  • 项目类别:
    Standard Grant
RAPID: Collaborative Research: Flask and in Situ Measurements of Carbon and Climate Tracers on ATom-1
RAPID:合作研究:ATom-1 上碳和气候示踪剂的烧瓶和原位测量
  • 批准号:
    1547797
  • 财政年份:
    2015
  • 资助金额:
    $ 207.89万
  • 项目类别:
    Standard Grant
Collaborative Research: The O2/N2 Ratio and CO2 Airborne Southern Ocean (ORCAS) Study
合作研究:O2/N2 比率和二氧化碳机载南大洋 (ORCAS) 研究
  • 批准号:
    1502301
  • 财政年份:
    2015
  • 资助金额:
    $ 207.89万
  • 项目类别:
    Standard Grant
MRI: Acquisition of High Precision Laser-based CO2 Isotope Analysis System for Atmospheric and Seawater Applications
MRI:获取用于大气和海水应用的高精度激光 CO2 同位素分析系统
  • 批准号:
    1429552
  • 财政年份:
    2014
  • 资助金额:
    $ 207.89万
  • 项目类别:
    Standard Grant
Collaborative Research: Atmospheric measurements of O2/N2 ratio, CO2 concentration, and CO2 isotopes in support of the Arctic Observing Network
合作研究:O2/N2 比率、CO2 浓度和 CO2 同位素的大气测量,支持北极观测网络
  • 批准号:
    1304270
  • 财政年份:
    2014
  • 资助金额:
    $ 207.89万
  • 项目类别:
    Continuing Grant
Testing model estimates of recent ocean carbon uptake and deoxygenation using atmospheric and oceanic data
使用大气和海洋数据测试近期海洋碳吸收和脱氧的模型估计
  • 批准号:
    1130976
  • 财政年份:
    2011
  • 资助金额:
    $ 207.89万
  • 项目类别:
    Continuing Grant
The Data Legacy of the Scripps Carbon Dioxide Program
斯克里普斯二氧化碳计划的数据遗产
  • 批准号:
    1036399
  • 财政年份:
    2010
  • 资助金额:
    $ 207.89万
  • 项目类别:
    Standard Grant
Collaborative Research: HIAPER Pole-to-Pole Observations (HIPPO) of Carbon Cycle and Greenhouse Gases
合作研究:碳循环和温室气体的 HIAPER 极地观测 (HIPPO)
  • 批准号:
    0628519
  • 财政年份:
    2007
  • 资助金额:
    $ 207.89万
  • 项目类别:
    Continuing Grant
Atmospheric Constraints on Carbon Exchanges and Related Processes Based on Measurements of Atmospheric O2/N2 and Ar/N2 Ratios and CO2 Concentrations
基于大气 O2/N2 和 Ar/N2 比率以及 CO2 浓度测量的大气对碳交换和相关过程的约束
  • 批准号:
    0651834
  • 财政年份:
    2007
  • 资助金额:
    $ 207.89万
  • 项目类别:
    Standard Grant

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合作研究:阿拉斯加北极沿海地区陆地冰冻期间的物理反馈
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