Influence of interannual atmospheric forcing on North Pacific biogeochemical variability

年际大气强迫对北太平洋生物地球化学变化的影响

基本信息

  • 批准号:
    0550771
  • 负责人:
  • 金额:
    --
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2006
  • 资助国家:
    美国
  • 起止时间:
    2006-03-15 至 2010-02-28
  • 项目状态:
    已结题

项目摘要

In this research project, investigators at the University of Washington will study the sensitivity of the North Pacific carbon cycle to changes in physical atmospheric forcing over the past few decades. Decade-scale changes in the North Pacific carbon cycle and related processes have been well documented through direct observations. Basic questions remain, however, about the controlling mechanisms, and little is known about the relationship between surface and thermocline variability. The investigators are motivated by a series of recent indications from both models and observations that fresh water forcing due to changes in the hydrological cycle plays an important role in the decadal variability of tracers of carbon cycle processes in both surface and thermocline waters. This issue can now be addressed using newly published historical ocean salinity trends. In addition, valuable data emerging from the CLIVAR program allows the relationships between changes in biogeochemical variability in surface waters and in the ocean interior to be explored.The research plan will involve hind cast simulations with an ocean circulation/biogeochemical model to examine the sensitivity of surface carbon cycle parameters and interior distributions of O2 and DIC to changes in sea surface salinity as well as nutrients. The investigators have previously developed a model for investigations of physical-biogeochemical variability in the North Pacific basin. While the model currently has no carbon cycle, it does have biogeochemical cycles of nutrients and oxygen that are able to reproduce the climatological O2 and nutrient distributions, as well as the overall pattern of thermocline O2 changes observed during the late 20th century. The straightforward addition of a carbon cycle to the model therefore builds on a demonstrated capacity to capture important modes of physical and biogeochemical variability.The results of these sensitivity experiments will then be assessed through a detailed comparison of model output to observed carbon cycle variability in the North Pacific based on ocean time series stations, together with data from the CLIVAR/CO2 Repeat Hydrography Program. This effort will take advantage of established collaborations with leading experimental carbon cycle scientists at the Pacific Marine Environmental Laboratory. Finally, the research team will conduct a series of attribution experiments to isolate and characterize the contribution of physical, biological and chemical processes to simulated carbon variability.Although the study itself will be regionally specific, the study should have broader impacts for the study of the global ocean carbon cycle and related phenomena. The emphasis on the spatial signatures and relative importance of different processes controlling ocean carbon cycle variability should inform the community-wide understanding of the variability of the global carbon cycle. The project will support a young postdoctoral investigator and a beginning graduate student.
在这个研究项目中,华盛顿大学的研究人员将研究北太平洋碳循环对过去几十年物理大气强迫变化的敏感性。 北太平洋碳循环和相关过程的十年尺度变化已通过直接观测得到充分记录。然而,关于控制机制的基本问题仍然存在,并且对表面和温跃层变化之间的关系知之甚少。 研究人员的动机是一系列最近的迹象表明,从两个模型和观测,淡水强迫由于水文循环的变化在地表和温跃层沃茨的碳循环过程的示踪剂的十年变化中起着重要的作用。这个问题现在可以用新发表的历史海洋盐度趋势来解决。此外,从CLIVAR程序中出现的宝贵数据允许在表层沃茨和海洋内部的海洋地球化学变化之间的关系进行探讨,研究计划将涉及后投模拟与海洋环流/海洋地球化学模式,以检查表面碳循环参数和内部分布的O2和DIC的敏感性,在海面盐度以及营养物的变化。研究人员以前已经开发了一个模型,用于调查北太平洋海盆的物理-地球化学变化。虽然该模型目前没有碳循环,但它确实有营养物和氧气的地球化学循环,能够重现气候学上的O2和营养物分布,以及在世纪后期观察到的温跃层O2变化的总体模式。因此,直接增加碳循环的模式,建立在一个证明的能力,捕捉物理和地球化学变异的重要模式,这些敏感性实验的结果,然后将评估通过详细比较模型的输出,观察到的碳循环变异在北太平洋的海洋时间序列站,以及数据从气候变化和大气研究/CO2重复水文方案。这项工作将利用与太平洋海洋环境实验室的主要实验碳循环科学家建立的合作关系。最后,研究小组将进行一系列归因实验,以分离和说明物理、生物和化学过程对模拟碳变异性的贡献,虽然研究本身将是区域性的,但这项研究应该对全球海洋碳循环和相关现象的研究产生更广泛的影响。 强调控制海洋碳循环变异性的不同过程的空间特征和相对重要性,应有助于全社会了解全球碳循环的变异性。该项目将支持一名年轻的博士后研究员和一名刚开始的研究生。

项目成果

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LuAnne Thompson其他文献

Diurnal warming rectification in the tropical Pacific linked to sea surface temperature front
热带太平洋日间变暖修正与海面温度锋相关
  • DOI:
    10.1038/s41561-024-01391-8
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    18.3
  • 作者:
    Meghan F. Cronin;Dongxiao Zhang;Samantha M. Wills;J. E. J. Reeves Eyre;LuAnne Thompson;Nathan Anderson
  • 通讯作者:
    Nathan Anderson
Unexpected fix for ocean models
海洋模型的意外修复
  • DOI:
    10.1038/535497a
  • 发表时间:
    2016-07-27
  • 期刊:
  • 影响因子:
    48.500
  • 作者:
    Kathryn A. Kelly;LuAnne Thompson
  • 通讯作者:
    LuAnne Thompson

LuAnne Thompson的其他文献

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{{ truncateString('LuAnne Thompson', 18)}}的其他基金

EAGER: Ocean Circulation in the Amundsen Sea Embayment over the 20th Century
EAGER:20 世纪阿蒙森海湾的海洋环流
  • 批准号:
    2333370
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Collaborative Research: Midlatitude Marine Heatwaves in a changing climate: Variability, Predictability, and Projections
合作研究:气候变化中的中纬度海洋热浪:变化性、可预测性和预测
  • 批准号:
    2022874
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
2016 Graduate Climate Conference; Seattle, Washington; October 28-30, 2016
2016年研究生气候会议;
  • 批准号:
    1640913
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
2014 Graduate Climate Conference; Eatonville, Washington; October 31-November 2, 2014
2014年研究生气候会议;
  • 批准号:
    1441614
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
2012 Graduate Climate Conference; Eatonville, Washington; October 26-28, 2012
2012年研究生气候会议;
  • 批准号:
    1242403
  • 财政年份:
    2012
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Ice-Ocean Interactions on the Okhotsk Sea Shelf
鄂霍次克海陆架上的冰海相互作用
  • 批准号:
    0526011
  • 财政年份:
    2005
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Exploratory Research on the Causes of Salinity Errors in the CCSM Coupled Climate Models with Focus on the Subpolar North Pacific
以副极地北太平洋为中心的CCSM耦合气候模式盐度误差成因探索性研究
  • 批准号:
    0451479
  • 财政年份:
    2004
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Mechanisms Controlling the Biological Pump and CO2 Uptake Rates in the North Pacific
北太平洋生物泵和二氧化碳吸收率的控制机制
  • 批准号:
    0095106
  • 财政年份:
    2001
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Interaction of Dynamics and Thermodynamics along the Boundaries of the North Pacific Subtropical Gyre
沿着北太平洋副热带环流边界的动力学和热力学的相互作用
  • 批准号:
    9818920
  • 财政年份:
    1999
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
NSF Young Investigator
NSF 青年研究员
  • 批准号:
    9458356
  • 财政年份:
    1994
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant

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湿地对大气甲烷增长率年际变化的贡献
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湿地对大气甲烷增长率年际变化的贡献
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湿地对大气甲烷增长率年际变化的贡献
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  • 批准号:
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大西洋中部湾冬春季气温的年际变化:与大规模大气和海洋变化的联系
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