Vertical Turbulent Aerosol Particle Transport above open Water and Ice in the central Arctic during Summertime (APAICA) -Aerosol particle sources and transformation in the Arctic marine boundary layer

夏季北极中部开放水域和冰上的垂直湍流气溶胶颗粒输运 (APAICA) - 北极海洋边界层的气溶胶颗粒源和转化

基本信息

项目摘要

The strongest temperature increase due to climate change is currently observed in the Arctic. This fact is based on a very complex chain of processes and feedbacks, in which aerosol particles play an essential role through their influence on radiation balance and cloud formation. In order to assess the impact of changing ice cover, the interactions between ocean as well as ice and the atmosphere also need to be better understood. In general, there is a lack of atmospheric measurements especially in the Arctic Ocean, which are urgently needed to understand the processes but also to predict the expected changes. Exchange processes between ocean/ice and atmosphere are currently poorly understood in these regions. In this project, the RV Polarstern will be used to study vertical exchange processes above water and ice in detail and to localize associated sources of aerosol particles. For this purpose, a series of continuous aerosol measurements on board the ship are planned, including number size distributions, optical parameters (scattering, absorption), the mixing ratio of particles containing black carbon (BC), the concentration of ice nucleating particles (INP), and the chemical composition of aerosol particles. Furthermore, samples of fog water will be collected during fog phases that occur frequently in summer, as well as daily water samples from the ocean throughout the campaign. These samples will be analyzed for the concentration of INP and BC after the measurement campaign. For the first time, BC- concentrations in airborne and water samples will be measured for the using laser incandescence. A novel method for pre-treatment of water samples with high salinity will be applied. By this combination of parallel investigation of components in air and water, transport and exchange processes of these aerosol particles shall be quantified.In the periods with calm movement of the ship or drift with the ice, measurement equipment for the determination of vertical particle fluxes will be employed at the frontal outrigger of the ship. This will be used to acquire time series of the wind vector and particle concentration, which will subsequently be used to determine the vertical turbulent particle flux by the eddy covariance method. Combined with these measurements, the concentration of the INP is recorded in order to be able to assign their origin and sources. Another measuring system, consisting of a one-dimensional wind measurement and a particle counter, is attached to the crane hook below the frontal outrigger and determines the vertical profiles of the particle concentration from which an estimation of the vertical particle flux is also possible. These methods are proven and established, but have never been applied in this way over the Arctic Ocean.
目前在北极观察到气候变化导致的最强烈的气温上升。这一事实基于非常复杂的过程和反馈链,其中气溶胶颗粒通过影响辐射平衡和云的形成发挥着重要作用。为了评估冰盖变化的影响,还需要更好地了解海洋以及冰与大气之间的相互作用。总的来说,缺乏大气测量,特别是在北冰洋,迫切需要这些测量来了解过程并预测预期的变化。目前这些地区对海洋/冰与大气之间的交换过程知之甚少。在该项目中,RV Polarstern 将用于详细研究水和冰上方的垂直交换过程,并定位相关的气溶胶颗粒源。为此,计划在船上进行一系列连续的气溶胶测量,包括数量尺寸分布、光学参数(散射、吸收)、含有黑碳(BC)的颗粒的混合比例、冰核颗粒(INP)的浓度以及气溶胶颗粒的化学成分。此外,还将在夏季频繁出现的雾期收集雾水样本,并在整个活动期间每天收集海洋水样。测量活动结束后,将分析这些样品的 INP 和 BC 浓度。首次使用白炽激光测量空气和水样中的 BC- 浓度。将应用一种高盐度水样预处理的新方法。通过这种对空气和水中成分的并行研究的结合,这些气溶胶颗粒的传输和交换过程将被量化。在船舶平静运动或随冰漂流的时期,将在船舶的前部支腿处使用测量设备来确定垂直颗粒通量。这将用于获取风矢量和粒子浓度的时间序列,随后将用于通过涡流协方差法确定垂直湍流粒子通量。结合这些测量结果,记录 INP 的浓度,以便能够确定其来源。另一个测量系统由一维风测量和颗粒计数器组成,安装在前支腿下方的起重机吊钩上,确定颗粒浓度的垂直分布,从中也可以估计垂直颗粒通量。这些方法已经被证实和确立,但从未在北冰洋上以这种方式应用过。

项目成果

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Professor Dr. Andreas B. Held其他文献

Professor Dr. Andreas B. Held的其他文献

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{{ truncateString('Professor Dr. Andreas B. Held', 18)}}的其他基金

The influence of ions on atmospheric particle growth - flow tube and aerosol chamber studies
离子对大气颗粒生长的影响——流管和气溶胶室研究
  • 批准号:
    287297866
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Field and laboratory studies of aerosol formation from halogenated precursor gases
卤化前体气体形成气溶胶的现场和实验室研究
  • 批准号:
    193265552
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Units
Nitrous acid (HONO) source and sink processes in a disturbed forest ecosystem - interactions of heterogeneous chemistry and turbulent transport
受干扰的森林生态系统中的亚硝酸 (HONO) 源和汇过程 - 异质化学和湍流传输的相互作用
  • 批准号:
    187047602
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Noval Experimental Techniques for the physical and chemical characterization of Nucleation mode Aerosol Particles
成核模式气溶胶颗粒物理和化学表征的新颖实验技术
  • 批准号:
    142705878
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Development and application of an experimental technique for the simulaneous quantification of atmospheric ultrafine particle composition and turbulent transport
大气超细颗粒成分与湍流输送同时定量实验技术的开发与应用
  • 批准号:
    15416901
  • 财政年份:
    2005
  • 资助金额:
    --
  • 项目类别:
    Research Fellowships
Turbulent Aerosol Fluxes in the central Arctic during the ARTofMELT expedition
ARTofMELT 探险期间北极中部的湍流气溶胶通量
  • 批准号:
    521926906
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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Exploration of the Nonequilibrium Statistical Mechanics of Turbulent Collisionless Plasmas
湍流无碰撞等离子体的非平衡统计力学探索
  • 批准号:
    2409316
  • 财政年份:
    2024
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    --
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EAGER: Liutex-based Sub-Grid Model for Large Eddy Simulation of Turbulent Flow
EAGER:基于 Liutex 的湍流大涡模拟子网格模型
  • 批准号:
    2422573
  • 财政年份:
    2024
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    --
  • 项目类别:
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Collaborative Research: Understanding the Influence of Turbulent Processes on the Spatiotemporal Variability of Downslope Winds in Coastal Environments
合作研究:了解湍流过程对沿海环境下坡风时空变化的影响
  • 批准号:
    2331729
  • 财政年份:
    2024
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    --
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    Continuing Grant
Mesh-free methods for turbulent reacting flows: the next generation of DNS
用于湍流反应流的无网格方法:下一代 DNS
  • 批准号:
    EP/W005247/2
  • 财政年份:
    2024
  • 资助金额:
    --
  • 项目类别:
    Research Grant
Collaborative Research: Understanding the Influence of Turbulent Processes on the Spatiotemporal Variability of Downslope Winds in Coastal Environments
合作研究:了解湍流过程对沿海环境下坡风时空变化的影响
  • 批准号:
    2331728
  • 财政年份:
    2024
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ERI: Experimental Investigation of Compressibility Effects on Turbulent Kinetic Energy Production in Supersonic Flows
ERI:压缩性对超音速流中湍动能产生的影响的实验研究
  • 批准号:
    2347416
  • 财政年份:
    2024
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    --
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    Standard Grant
Impact of roughness on adverse pressure gradient turbulent boundary layers
粗糙度对逆压梯度湍流边界层的影响
  • 批准号:
    DP240103015
  • 财政年份:
    2024
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    Discovery Projects
CAREER: High fidelity numerical simulations of turbulent flow separation at high Reynolds numbers with passive scalar transport.
职业:采用被动标量传输的高雷诺数湍流分离的高保真度数值模​​拟。
  • 批准号:
    2314303
  • 财政年份:
    2023
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    --
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    Standard Grant
CAREER: Nonlinear Finite Element Manifolds for Improved Simulation of Shock-Dominated Turbulent Flows
职业:用于改进冲击主导的湍流模拟的非线性有限元流形
  • 批准号:
    2338843
  • 财政年份:
    2023
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    --
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    Continuing Grant
CAREER: Embedded Data Assimilation for Complex Turbulent Reacting Flows
职业:复杂湍流反应流的嵌入式数据同化
  • 批准号:
    2236904
  • 财政年份:
    2023
  • 资助金额:
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  • 项目类别:
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