Water Masses, Circulation Patterns, and Variability in the Central Arctic Ocean: Tracer Studeis (Tritium/3He, Oxygen Isotopes, and 14C) During the 2005 Arctic Section

北冰洋中部的水团、环流模式和变化:2005 年北极部分的示踪剂研究(氚/3He、氧同位素和 14C)

基本信息

  • 批准号:
    0353646
  • 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:
    2005
  • 资助国家:
    美国
  • 起止时间:
    2005-04-01 至 2009-03-31
  • 项目状态:
    已结题

项目摘要

This work will support the collection, measurement and analysis of tracers (tritium/3He, oxygen isotopes, and 14C) during the planned 2005 trans-Arctic cruise of the Swedish icebreaker ODEN, likely as a two-ship operation with the US Icebreaker Healy. The cruise track will cross the entire central Arctic, starting from the Alaskan Shelf crossing the central Canadian Basin to the Pole, from where it leads across the Eurasian Basin to the continental shelf north of the Barents Sea. This section offers the first opportunity to obtain a high-quality, high-resolution, full-depth multi-tracer data set in the central Canada Basin. In the context of the hydrography/tracer program scheduled to be carried out from the ODEN the PIs will collect and measure 900 tritium and helium isotope, 720 oxygen isotope, and 120 radiocarbon (14C) samples. These numbers of samples are adjusted to the scientific goals addressed with the individual tracer measurements. Accommodation on the ODEN for personnel to collect the tracer samples is being provided generously by Swedish colleagues. The proposed work will significantly enhance tracer studies in the Arctic Ocean by providing the first high-quality tracer data set from the poorly sampled Canadian Basin. They also will allow a look at decadal variability in the Eurasian Basin. Finally, the data will provide an extension of the global CLIVAR/carbon repeat hydrography program to the high northern latitude and will represent a firm baseline against which future sections can be compared to study possible anthropogenically driven change in the Arctic. The tracer data will be used to address the following scientific questions: (a) Determine freshwater distribution and inventories over the main basins of the Arctic Ocean and freshwater sources (meteoric water (river runoff and precipitation), sea ice meltwater and Bering Strait Inflow). (b) Explore changes in the freshwater inventory over the Nansen and Amundsen basins compared to those observed along sections occupied in 1991 and 1996 (decadal variability). (c) Determine circulation patterns of the upper waters (surface, halocline, and Atlantic-derived waters). (d) Examine mid-depth circulation patterns in the central Arctic Ocean. (e) Determine the mean residence times and age gradients in the deep waters in the Canadian Basin. The tracer data will be collected and interpreted in close cooperation with the other oceanographic programs on ODEN. The program addresses objectives of ARCSS, SEARCH, and ASOF, as well as high-latitude CLIVAR. Broader Impacts: The program will help to determine to which degree the wide range of changes that have recently been documented in the Arctic are part of natural variability or change due to human activities. This question has important societal relevance because a change towards a new state of the arctic system would have global ramifications for climate, as well as economy. Many indicators hint at the latter scenario, but we still lack the scientific certainty for an anthropogenically driven change of the arctic system. Additional broader impacts include the availability of high-quality data sets from the Arctic that will be used to assemble global data sets for climate and carbon studies (tracer measurements are an important element for estimating the amount of anthropogenic carbon in the ocean). On the educational side, the data will be available to students working on high latitude problems, and the results will be posted on a web site. The material is also routinely used in advanced courses taught at Columbia University. The material is typically used in case studies in courses on tracer oceanography or environmental tracer techniques. The data are also used by students for term papers or problem sets. Finally the PIs are establishing a program with high schools that will allow students to closely follow the evolution of scientific knowledge by involving them in each part of the proposed work.
这项工作将支持收集,测量和分析示踪剂(氚/3 He,氧同位素和14 C)在计划的2005年跨北极巡航的瑞典破冰船ODEN,可能作为一个双船操作与美国破冰船希利。巡航路线将穿越整个北极中部,从阿拉斯加大陆架开始,穿过加拿大盆地中部到达极点,从那里穿过欧亚盆地到达巴伦支海以北的大陆架。本节提供了第一次机会,以获得高质量,高分辨率,全深度的多示踪剂数据集在加拿大盆地中部。在计划从ODEN进行的水文/示踪剂计划的背景下,PI将收集和测量900个氚和氦同位素,720个氧同位素和120个放射性碳(14 C)样品。这些样品的数量被调整到与单个示踪剂测量一起解决的科学目标。瑞典同事正在ODEN号上慷慨地为收集示踪样品的人员提供住宿。拟议的工作将大大加强北冰洋的示踪剂研究,提供第一套来自加拿大海盆采样不足的高质量示踪剂数据。它们还将使人们能够看到欧亚盆地的十年变化。最后,数据将提供一个扩展的全球气候变化和气候变化评估/碳重复水文计划的高北方纬度,并将代表一个坚实的基线,未来的部分可以比较研究可能的气候变化驱动的变化在北极。(a)确定北冰洋主要流域的淡水分布和存量以及淡水来源(大气降水(河流径流和降水)、海冰融水和白令海峡流入)。(b)探索与1991年和1996年占据的沿着部分相比,南森和阿蒙森流域淡水存量的变化(十年变化)。(c)确定上层沃茨(表层、盐跃层和南极派生的沃茨)的环流模式。(d)研究北冰洋中部的中层环流模式。(e)确定加拿大海盆深层沃茨的平均停留时间和年龄梯度。将与ODEN上的其他海洋学方案密切合作,收集和解释示踪剂数据。该计划涉及ARCSS、ASOF和高纬度CLIVAR的目标。更广泛的影响:该计划将有助于确定最近在北极记录的广泛变化在多大程度上是自然变异或人类活动引起的变化的一部分。这个问题具有重要的社会意义,因为北极系统向新状态的变化将对气候和经济产生全球影响。许多指标暗示了后一种情况,但我们仍然缺乏科学确定性,认为北极系统的变化是由气候变化驱动的。其他更广泛的影响包括北极提供高质量的数据集,这些数据集将用于收集气候和碳研究的全球数据集(示踪剂测量是估计海洋中人为碳量的一个重要因素)。在教育方面,将向研究高纬度问题的学生提供数据,并将结果公布在网站上。这些材料也经常用于哥伦比亚大学教授的高级课程。该材料通常用于示踪海洋学或环境示踪技术课程的个案研究。这些数据也被学生用于学期论文或问题集。最后,PI正在与高中建立一个项目,让学生密切关注科学知识的演变,让他们参与拟议工作的每一部分。

项目成果

期刊论文数量(0)
专著数量(0)
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会议论文数量(0)
专利数量(0)

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Peter Schlosser其他文献

A 3H/3He Study of Ground Water Flow in a Fractured Bedrock Aquifer
裂隙基岩含水层地下水流的 3H/3He 研究
  • DOI:
  • 发表时间:
    1998
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Werner Aeschbach;Peter Schlosser;Peter Schlosser;M. Stute;M. Stute;H. J. Simpson;H. J. Simpson;A. Ludin;Jordan F. Clark
  • 通讯作者:
    Jordan F. Clark
New Tramway Infrastructure in Bratislava – How can Influence the Well Prepared Traffic Engineering Analysis and Planning Tools the Decision Making
  • DOI:
    10.1016/j.proeng.2016.08.545
  • 发表时间:
    2016-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    Tibor Schlosser;Peter Schlosser
  • 通讯作者:
    Peter Schlosser
Time evolution of superoscillations for the Schrödinger equation on $${\mathbb {R}}\setminus \{0\}$$
Evolution of Aharonov–Berry superoscillations in Dirac $$\varvec{\delta }$$ -potential
Modeling recent climate variability in the Arctic Ocean
模拟北冰洋近期的气候变化
  • DOI:
    10.1029/1999gl011227
  • 发表时间:
    2000
  • 期刊:
  • 影响因子:
    5.2
  • 作者:
    W. Maslowski;B. Newton;Peter Schlosser;A. Semtner;D. Martinson
  • 通讯作者:
    D. Martinson

Peter Schlosser的其他文献

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{{ truncateString('Peter Schlosser', 18)}}的其他基金

NSF Engines: Southwest Sustainability Innovation Engine
NSF Engines:西南可持续创新引擎
  • 批准号:
    2315479
  • 财政年份:
    2024
  • 资助金额:
    --
  • 项目类别:
    Cooperative Agreement
Collaborative Research: Influence of Surfactants on Air-Sea Gas Exchange: 3He/SF6 Experiments in the Baltic Sea
合作研究:表面活性剂对海气交换的影响:波罗的海的 3He/SF6 实验
  • 批准号:
    1756757
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Collaborative Research: Gas Transfer through Polar Sea Ice (GAPS) - Mechanisms of Turbulence Production in the Seasonal Ice Zone and its Control of Mixed Layer Ventilation
合作研究:极地海冰气体传输(GAPS)——季节性冰区湍流产生机制及其对混合层通风的控制
  • 批准号:
    0944643
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Collaborative Research: Long-term Observations in the Switchyard Region of the Arctic Ocean as Part of the Arctic Observing Network (AON)
合作研究:作为北极观测网络(AON)一部分的北冰洋开关站地区的长期观测
  • 批准号:
    1023529
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Collaborative Research: Global Ocean Repeat Hydrography, Carbon, and Tracer Measurements, 2009-2014
合作研究:全球海洋重复水文学、碳和示踪剂测量,2009-2014
  • 批准号:
    0752980
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Collaborative Research: A Modular Approach to Building an Arctic Observing System for the IPY and Beyond in the Switchyard Region of the Arctic Ocean
合作研究:在北冰洋开关站地区为 IPY 及其他地区建立北极观测系统的模块化方法
  • 批准号:
    0633878
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Collaborative Research: AnSlope Analysis
合作研究:AnSlope 分析
  • 批准号:
    0440827
  • 财政年份:
    2005
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Collaborative Research: Circulation in the Freshwater Switchyard of the Arctic Ocean
合作研究:北冰洋淡水开关站的循环
  • 批准号:
    0230238
  • 财政年份:
    2003
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Collaborative Research: Global Ocean Repeat Hydrography, Carbon, and Tracer Measurements
合作研究:全球海洋重复水文学、碳和示踪剂测量
  • 批准号:
    0223951
  • 财政年份:
    2003
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Collaborative Research: AnSlope, Cross-Slope Exchanges at the Antarctic Slope Front
合作研究:AnSlope,南极斜坡前缘的跨斜坡交换
  • 批准号:
    0125523
  • 财政年份:
    2002
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant

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