Arctic Floats: A Pilot Effort for Arctic Argo

北极浮标:Argo Argo 的试点工作

基本信息

  • 批准号:
    1643339
  • 负责人:
  • 金额:
    $ 7.1万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2016
  • 资助国家:
    美国
  • 起止时间:
    2016-08-15 至 2017-01-31
  • 项目状态:
    已结题

项目摘要

The Arctic Ocean plays an important role in regulating the world ocean's heat, and freshwater, and its nutrient cycles. Understanding, monitoring, and predicting how the Arctic Ocean changes as climate changes are thus imperative, but can only be achieved with a comprehensive observation network. The exceedingly successful global Argo program, which consists of roughly 3000 autonomous instruments distributed throughout the world ocean measuring physical properties of the upper 2000 m of the water column, has demonstrated how such a monitoring system can be maintained using low-cost autonomous profiling floats. Technological advancement has made it possible to deploy Argo-type floats in the deep Arctic basin, but sea ice reduces the floats? ability to surface at regular intervals to determine their position and to transmit data to satellites. Using simulations, we will investigate uncertainties associated with extended "silent times" during which floats are unable to surface. We will determine the reduced accuracies in temperature and salinity measurements as a function of a float?s initial position and length of silent times. Use of auxiliary information to estimate the float's movements during silent times will also be explored. These simulations will help establish the likelihood that floats will report their positions after residing 1-5 years under ice and the number of floats that are needed to reduce the uncertainty in the measurement of water mass properties, helping us design a plan for using Arctic floats in the near future.The proposed work leverages much of the high latitude satellite and in situ observations and the use of the Arctic Sub-polar gyre state estimate (ASTE) to extract as much information as possible on: (a) the uncertainty associated with operating near-future float technology, and (b) the geographic distribution of where new observations would have the most impact on better understanding the hydrographic changes occuring in the Arctic. We will quantify several metrics, related to the likelihood of a float?s' surfacing-time as a function of time-mean and time-varying sea ice state, the float's associated position uncertainties, and the implied hydrographic uncertainties. The use of the observations and the state estimate are complementary in that ASTE can inform the initial design of the float deployment, and in turn future float data will be used to further constrain and improve ASTE
北冰洋在调节世界海洋的热量、淡水及其营养循环方面发挥着重要作用。因此,了解、监测和预测北冰洋如何随着气候变化而变化势在必行,但只有通过全面的观测网络才能实现。全球阿尔戈方案非常成功,它由分布在世界各地的大约3000台自主仪器组成,测量水柱上部2000米的物理特性,该方案已经证明了如何使用低成本自主剖面浮标来维护这样一个监测系统。技术进步使得在北极盆地深处部署Argo型浮子成为可能,但海冰减少了浮子?能够定期浮出水面,以确定其位置并向卫星传输数据。使用模拟,我们将调查与延长的“沉默时间”,在此期间,浮动无法表面的不确定性。我们将确定降低精度的温度和盐度测量作为一个功能的浮动?的初始位置和静默时间的长度。还将探讨使用辅助信息来估计浮子在静默时间的运动。这些模拟将有助于确定浮子在冰下停留1-5年后报告其位置的可能性,以及减少水质量特性测量中的不确定性所需的浮子数量,帮助我们设计在不久的将来使用北极浮标的计划。拟议的工作利用了大部分高纬度卫星和现场观测以及使用北极次极地环流状态估计(ASTE),以提取尽可能多的信息:(a)与操作不久的未来浮子技术相关的不确定性,以及(B)新观测对更好地了解北极水文变化影响最大的地理分布。我们将量化几个指标,与浮动的可能性?s'浮出水面时间作为时间平均和随时间变化的海冰状态的函数,浮子的相关位置不确定性,以及隐含的水文不确定性。观测值和状态估计值的使用是互补的,因为ASTE可以告知浮子部署的初始设计,反过来,未来的浮子数据将用于进一步约束和改进ASTE

项目成果

期刊论文数量(0)
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会议论文数量(0)
专利数量(0)

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An Nguyen其他文献

HUMAN GAIT ANALYSIS USING HYBRID CONVOLUTIONAL NEURAL NETWORKS
使用混合卷积神经网络进行人体步态分析
The Optimal Initial Dose and Route of Naloxone Administration for Successful Opioid Reversal: A Systematic Literature Review
纳洛酮成功逆转阿片类药物的最佳初始剂量和给药途径:系统文献综述
  • DOI:
    10.7759/cureus.52671
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Rida Aziz;Lan Nguyen;Washika Ruhani;An Nguyen;Brian Zachariah
  • 通讯作者:
    Brian Zachariah
Hemolytic anemia following rasburicase administration: a review of published reports.
拉布立酶给药后的溶血性贫血:已发表报告的回顾。
EXTERNAL CAVITY SEMICONDUCTOR LASERS
  • DOI:
  • 发表时间:
    1999
  • 期刊:
  • 影响因子:
    0
  • 作者:
    An Nguyen
  • 通讯作者:
    An Nguyen
Mutations in LNPK, Encoding the Endoplasmic Reticulum Junction Stabilizer Lunapark, Cause a Recessive Neurodevelopmental Syndrome
  • DOI:
    10.1016/j.ajhg.2018.06.011
  • 发表时间:
    2018-08-02
  • 期刊:
  • 影响因子:
    9.8
  • 作者:
    Breuss, Martin W.;An Nguyen;Gleeson, Joseph G.
  • 通讯作者:
    Gleeson, Joseph G.

An Nguyen的其他文献

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{{ truncateString('An Nguyen', 18)}}的其他基金

Drivers and Impacts of North Atlantic freshwater and heat fluxes unsettling modern-day climate (DIMSUM)
北大西洋淡水和热通量扰乱现代气候的驱动因素和影响 (DIMSUM)
  • 批准号:
    2401413
  • 财政年份:
    2023
  • 资助金额:
    $ 7.1万
  • 项目类别:
    Standard Grant
Collaborative Research: Research Networking Activities in Support of Sustained Coordinated Observations of Arctic Change
合作研究:支持北极变化持续协调观测的研究网络活动
  • 批准号:
    1936579
  • 财政年份:
    2020
  • 资助金额:
    $ 7.1万
  • 项目类别:
    Continuing Grant
COJO for COVID recovery: Solutions-focused constructive journalism as a pandemic exit strategy for local/regional UK communities
COJO 促进新冠病毒恢复:以解决方案为中心的建设性新闻作为英国当地/区域社区的流行病退出策略
  • 批准号:
    AH/V015168/1
  • 财政年份:
    2020
  • 资助金额:
    $ 7.1万
  • 项目类别:
    Research Grant
Collaborative Research: AccelNet: Accelerating discoveries at Greenlands marine margins through international collaboration
合作研究:AccelNet:通过国际合作加速格陵兰海洋边缘的发现
  • 批准号:
    2020387
  • 财政年份:
    2020
  • 资助金额:
    $ 7.1万
  • 项目类别:
    Standard Grant
Collaborative Research: Three-dimensional structure of Arctic tides and near-inertial oscillations, and their role in changing the Arctic Ocean and ice pack
合作研究:北冰洋潮汐和近惯性振荡的三维结构及其在改变北冰洋和冰层中的作用
  • 批准号:
    1708289
  • 财政年份:
    2017
  • 资助金额:
    $ 7.1万
  • 项目类别:
    Standard Grant
Collaborative Research: Understanding Arctic System Change Through Synthesis of Hydrographic and Sea Ice Observations from the early 21st Century
合作研究:通过综合 21 世纪初的水文和海冰观测了解北极系统的变化
  • 批准号:
    1603903
  • 财政年份:
    2016
  • 资助金额:
    $ 7.1万
  • 项目类别:
    Standard Grant
Collaborative Research: An eddy-permitting Arctic & Sub-Polar State Estimate for climate research
合作研究:允许涡流的北极
  • 批准号:
    1118473
  • 财政年份:
    2011
  • 资助金额:
    $ 7.1万
  • 项目类别:
    Standard Grant
Collaborative Research: An eddy-permitting Arctic & Sub-Polar State Estimate for climate research
合作研究:允许涡流的北极
  • 批准号:
    1023089
  • 财政年份:
    2010
  • 资助金额:
    $ 7.1万
  • 项目类别:
    Standard Grant

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