Mixing in the equatorial Pacific: the role of interleaving
赤道太平洋的混合:交织的作用
基本信息
- 批准号:0326630
- 负责人:
- 金额:$ 34.63万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2003
- 资助国家:美国
- 起止时间:2003-09-01 至 2007-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This project focuses on lateral mixing and the role of the observed interleaving of water masses across the equator. Estimates suggest that the interleaving has an effective lateral diffusion coefficient of the order of 1000 m2s-1. Imposing an enhanced mixing coefficient of this magnitude close to the equator is found in preliminary experiments with an ocean general circulation model (OGCM) to both limit the strength of the Equatorial Under Current (EUC) and reduce the cold bias in the eastern cold tongue, thus resolving two problems which plague ocean models used in climate studies. The ultimate goal is to provide a parameterization scheme for interleaving suitable for ocean models used in climate studies, and thus improves the reliability and predictive skill of climate models. An analysis of existing observations will be combined with linear stability theory, numerical process studies and an OGCM to elucidate the fundamental physics of the interleaving process. Associated fluxes of momentum and tracers will be quantified and the relationship between these fluxes and the broader scale characteristics of the ocean state will be determined. The main focus will be on inertial instability (and other shear induced instabilities) as the prime mechanism for the formation and subsequent evolution of the layering. Particular attention will be paid to the three dimensional nature of the interleaving process. Double diffusive vertical fluxes may also play a role and their impact will be investigated and quantified. A parameterization scheme for interleaving will be developed and tested, and its impact on the characteristics of an OGCM configured for the Pacific Ocean will be investigated.Broader Impacts: The usefulness of any climate forecast depends crucially on its skill and reliability; with implications for the way planners and resource managers react and the potential gains by human society. The reliability of a forecast is improved through an increased understanding of the physical processes involved. The enhanced mixing brought about by interleaving may well affect the development of ENSO events and possibly its decadal variability. The proposed work is designed to have an output that is directly useful to agencies charged with making ENSO forecasts, as well as other researchers. The work is directly related to the aims of the Climate variability and predictability Program (CLIVAR) and will be useful to the forthcoming ocean biogeochemistry program.
该项目的重点是横向混合和所观察到的横跨赤道的水团交错的作用。估计表明,交错有一个有效的横向扩散系数的顺序为1000 m2 s-1。在海洋环流模式(OGCM)的初步实验中发现,在赤道附近施加这种量级的增强混合系数,既可以限制赤道潜流(EUC)的强度,又可以减少东部冷舌的冷偏差,从而解决了困扰气候研究中海洋模式的两个问题。其最终目的是为气候研究中的海洋模式提供一种合适的交错参数化方案,从而提高气候模式的可靠性和预报能力。现有的观测分析将结合线性稳定性理论,数值过程的研究和OGCM阐明交织过程的基本物理。将对相关的动量和示踪剂通量进行量化,并确定这些通量与海洋状况的更广泛尺度特征之间的关系。主要的重点将是惯性不稳定性(和其他剪切引起的不稳定性)的形成和随后的分层演变的主要机制。将特别注意交织过程的三维性质。双重扩散的垂直通量也可能发挥作用,将对其影响进行调查和量化。一个参数化方案的交错将开发和测试,其对OGCM配置为太平洋的特点的影响将investigated.Broader影响:任何气候预测的有用性关键取决于它的技能和可靠性,与规划者和资源管理者的反应方式和人类社会的潜在收益的影响。通过加深对所涉及的物理过程的理解,可以提高预报的可靠性。交错引起的混合增强可能会影响ENSO事件的发展,并可能影响其年代际变化。拟议的工作旨在产生对负责进行厄尔尼诺/南方涛动预测的机构以及其他研究人员直接有用的产出。这项工作与气候变率和可预测性计划(CLIVAR)的目标直接相关,并将有助于即将开展的海洋地球化学计划。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Kelvin Richards其他文献
The impact of ocean mixing on the Pacific cold tongue
海洋混合对太平洋冷舌的影响
- DOI:
- 发表时间:
2010 - 期刊:
- 影响因子:0
- 作者:
那須侑子;東野美和;齋藤尚子;林田佐智子;今須良一;塩見慶;町田敏暢;松枝秀和;Kelvin Richards - 通讯作者:
Kelvin Richards
Kelvin Richards的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Kelvin Richards', 18)}}的其他基金
Collaborative Research: The Impact of Climate Change on the Physics and Biology of the Ocean on Scales Down to the Submesoscale
合作研究:气候变化对亚中尺度海洋物理和生物学的影响
- 批准号:
1658550 - 财政年份:2017
- 资助金额:
$ 34.63万 - 项目类别:
Standard Grant
Collaborative Research: Mixing in the Equatorial Thermocline (MIXET)
合作研究:赤道温跃层的混合(MIXET)
- 批准号:
1029722 - 财政年份:2010
- 资助金额:
$ 34.63万 - 项目类别:
Standard Grant
Scale interactions in the equatorial ocean
赤道海洋的尺度相互作用
- 批准号:
0751962 - 财政年份:2008
- 资助金额:
$ 34.63万 - 项目类别:
Standard Grant
SGER: Measurements of the Velocity Field Associated with Interleaving
SGER:与交织相关的速度场的测量
- 批准号:
0741426 - 财政年份:2007
- 资助金额:
$ 34.63万 - 项目类别:
Standard Grant
相似海外基金
mCDR 2023: Multiscale observing system simulation experiments for iron fertilization in the Southern Ocean, Equatorial Pacific, and Northeast Pacific
mCDR 2023:南大洋、赤道太平洋和东北太平洋铁肥化多尺度观测系统模拟实验
- 批准号:
2333334 - 财政年份:2023
- 资助金额:
$ 34.63万 - 项目类别:
Standard Grant
Global ocean circulation during the late Quaternary: Paleoceanographic constraints from the Western Equatorial Pacific
晚第四纪全球海洋环流:来自西赤道太平洋的古海洋学限制
- 批准号:
RGPIN-2022-03064 - 财政年份:2022
- 资助金额:
$ 34.63万 - 项目类别:
Discovery Grants Program - Individual
RAPID: Exploring the high-frequency variability of air-sea CO2 fluxes in the Eastern Equatorial Pacific from an ecotourism ship
RAPID:从生态旅游船上探索东赤道太平洋海气二氧化碳通量的高频变化
- 批准号:
2225719 - 财政年份:2022
- 资助金额:
$ 34.63万 - 项目类别:
Standard Grant
Equatorial transport of nitrous oxide from the eastern tropical Pacific Ocean
东热带太平洋一氧化二氮的赤道输送
- 批准号:
2048518 - 财政年份:2021
- 资助金额:
$ 34.63万 - 项目类别:
Standard Grant
Resolving 20th Century Sea Surface Temperatures in the Central Equatorial Pacific with Laser Sr-U
利用激光 Sr-U 解析 20 世纪中赤道太平洋海面温度
- 批准号:
2016133 - 财政年份:2020
- 资助金额:
$ 34.63万 - 项目类别:
Standard Grant
Collaborative Research: Investigating the Influences of Hydrothermal and Respired Carbon in Intermediate Waters of the Equatorial Pacific Ocean During the Last Deglaciation
合作研究:调查末次冰消期赤道太平洋中层水域热液和呼吸碳的影响
- 批准号:
1904433 - 财政年份:2019
- 资助金额:
$ 34.63万 - 项目类别:
Standard Grant
Collaborative Research: Investigating the Influences of Hydrothermal and Respired Carbon in Intermediate Waters of the Equatorial Pacific Ocean During the Last Deglaciation
合作研究:调查末次冰消期赤道太平洋中层水域热液和呼吸碳的影响
- 批准号:
1905505 - 财政年份:2019
- 资助金额:
$ 34.63万 - 项目类别:
Standard Grant
Collaborative Research: Investigating the Influences of Hydrothermal and Respired Carbon in Intermediate Waters of the Equatorial Pacific Ocean During the Last Deglaciation
合作研究:调查末次冰消期赤道太平洋中层水域热液和呼吸碳的影响
- 批准号:
2001569 - 财政年份:2019
- 资助金额:
$ 34.63万 - 项目类别:
Standard Grant
Collaborative Research: Linking Atmospheric CO2 to Millennial Changes in Atmospheric and Oceanic Circulation in the Eastern Equatorial Pacific Ocean over the Past 100 kyr
合作研究:将大气二氧化碳与过去 100 公里东赤道太平洋大气和海洋环流的千年变化联系起来
- 批准号:
1803803 - 财政年份:2018
- 资助金额:
$ 34.63万 - 项目类别:
Standard Grant
Collaborative Research: Atmospheric CO2 and the Relationship to Millennial Changes in Atmospheric and Oceanic Circulation in the Eastern Equatorial Pacific Ocean over the Past 100
合作研究:大气CO2及其与过去100年东赤道太平洋大气和海洋环流千年变化的关系
- 批准号:
1803933 - 财政年份:2018
- 资助金额:
$ 34.63万 - 项目类别:
Standard Grant