Measurements of properties of marine aerosols on research vessel

研究船上海洋气溶胶特性的测量

基本信息

  • 批准号:
    14048222
  • 负责人:
  • 金额:
    $ 23.49万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research on Priority Areas
  • 财政年份:
    2002
  • 资助国家:
    日本
  • 起止时间:
    2002 至 2005
  • 项目状态:
    已结题

项目摘要

It is difficult to measure the size distribution of atmospheric aerosol in laboratory because humidity of sample is different between outdoor and indoor. The artifact of sample on the filter is also a sever problem in chemical analysis.To solve the problem of the humidity effects on size measuring two systems were using to measure size distribution in dry and wet conditions (Miura). An intermixture structure of individual particles was examined by a water dialysis (Niimura and Miura). To solve the problem of the artifact sulfate and nitrate concentration were measured with real time analyzer continuously (Uematsu). Radon concentration was measured continuously as a tracer of continental air mass (Kojima).Main results are as follows :1. Humidity properties of marine submicron particles were investigated with the TDMA. Growth fraction of marine aerosol was almost 100 % and growth factor was a little smaller than that of NaCl. But the deliquescence humidity of these aerosols agreed with that of NaCl. Growth factor and growth fraction of aerosols decrease as they are affected by continental air mass. These properties are dependent on aerosol sources and weather condition.2. The mixing properties of individual particles were studied by using a combination of TEM, EDX and a water dialysis. For the particles collected over the North Pacific, the elemental analysis showed that most of particles contained water-soluble material. A number fraction of "Mixed" particles in all particles ranged from 40 to 80%. For particles collected over the East China Sea, the elemental analysis showed that a number fraction of "Mixed" particles of Kosa event was twice or three times that of non-Kosa event. These results imply that marine atmosphere is influence by soot or Kosa particles mixed with water-soluble materials, when the air mass is transported from the Continent.
由于室外和室内样品的湿度不同,给实验室测量大气气溶胶的大小分布带来了困难。样品在过滤器上的伪影也是化学分析中的一个严重问题。为了解决湿度对粒度测量的影响问题,采用两种系统分别测量干湿条件下的粒度分布(Miura)。单个粒子的混合结构被水透析检查(Niimura和Miura)。为解决假物硫酸盐和硝酸盐浓度的问题,采用实时分析仪(Uematsu)连续测量。连续测量氡浓度作为大陆气团的示踪剂(小岛)。主要研究结果如下:用TDMA研究了海洋亚微米颗粒的湿度特性。海洋气溶胶的生长分数几乎为100%,生长因子略小于NaCl。但这些气溶胶的潮解湿度与NaCl的潮解湿度一致。受大陆气团的影响,气溶胶的生长因子和生长分数降低。这些特性取决于气溶胶来源和天气条件。采用透射电镜、EDX和水透析相结合的方法研究了单个颗粒的混合特性。对在北太平洋收集的颗粒,元素分析表明,大多数颗粒含有水溶性物质。在所有颗粒中,“混合”颗粒的数量分数在40%到80%之间。元素分析表明,在东海上空收集的颗粒中,科沙事件的“混合”颗粒的数量分数是非科沙事件的2 ~ 3倍。这些结果表明,当气团从大陆运来时,海洋大气受到与水溶性物质混合的烟灰或科沙颗粒的影响。

项目成果

期刊论文数量(234)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
海洋大気エアロゾルの挙動と組成変動に関する地球化学的研究-2004年度日本地球化学会賞受賞記念論文
海洋-大气气溶胶的行为和成分变化的地球化学研究 - 2004年日本地球化学会奖纪念论文
  • DOI:
  • 发表时间:
    2005
  • 期刊:
  • 影响因子:
    0
  • 作者:
    関華奈子;三好由純;天野孝伸;他;植松光夫
  • 通讯作者:
    植松光夫
Direct Measurements of Turbulent Vertical Fluxes of Fogwater and Atmospheric Aerosol Particles From a Moving Ship
直接测量移动船舶的雾水和大气气溶胶颗粒的湍流垂直通量
  • DOI:
  • 发表时间:
    2006
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Gire Bbaum;F.
  • 通讯作者:
    F.
An Increase in Primary Production in the South Area out of Kuroshio after Miyakejima Eruption (in Japanese).
三宅岛喷发后黑潮南部地区初级生产增加(日语)。
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Toratani;M.
  • 通讯作者:
    M.
Sources of sodium in atmospheric fine particles
  • DOI:
    10.1016/s1352-2310(02)00341-2
  • 发表时间:
    2002-09
  • 期刊:
  • 影响因子:
    5
  • 作者:
    A. Ooki;M. Uematsu;K. Miura;S. Nakae
  • 通讯作者:
    A. Ooki;M. Uematsu;K. Miura;S. Nakae
Free amino acids in size-fractionated marine aerosols over the remote ocean.
偏远海洋上空尺寸分级海洋气溶胶中的游离氨基酸。
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MIURA Kazuhiko其他文献

MIURA Kazuhiko的其他文献

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{{ truncateString('MIURA Kazuhiko', 18)}}的其他基金

Effects of aerosols, radon, and cosmic ray on concentration of small ions in the urban, maritime, mountain atmosphere
气溶胶、氡和宇宙线对城市、海洋、山区大气中小离子浓度的影响
  • 批准号:
    22510019
  • 财政年份:
    2010
  • 资助金额:
    $ 23.49万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

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人为气溶胶排放空间格局演变在气候变化轨迹中的作用
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