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首页> 外文期刊>Atmospheric research >Geochemical characteristics and potential biogeochemical effect of water-soluble ions in atmospheric aerosols over the western boundary regions of Pacific Ocean
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Geochemical characteristics and potential biogeochemical effect of water-soluble ions in atmospheric aerosols over the western boundary regions of Pacific Ocean

机译：太平洋西部边界区大气气溶胶中水溶性离子在太平洋西部边界区的地球化学特征及潜在生物地球化学效应

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摘要

Atmospheric aerosol samples over the western boundary regions of Pacific Ocean were collected during August 2014-October 2014 and November 2015-February 2016 on R/V Ke Xue, and concentrations of major water-soluble ions, NO3-, NO2-, NH4(+), PO43-, SO42-, MSA(-), Cl-, and Na+, were determined to study their seasonal distributions, sources and biogeochemical effect. The results showed that the average concentrations of NO3-, Cl- and Na+ were higher in winter, while the other ions had higher concentrations in summer. Most water-soluble ions presented obvious high-value centers in nearshore, indicating the significant influence of terrestrial input. Terrestrial input and marine emission were two major factors causing variation in concentrations of water-soluble ions, although their relative contributions were different in summer and winter. The average MSAss-SO42- ratios in summer and in winter were 1.60% and 2.10%, respectively, based on which the contributions of anthropogenic sources to the total SO42- were calculated to be 45.7% and 30.1% in summer and winter, respectively. Yet the contribution of biogenic sources to the total SO42-, which was 14.9% in summer and 14.4% in winter, showed no seasonal change. Apart from air masses from Asian continent, air masses from Japan as well as from Indonesia were also important terrestrial sources of aerosol ions according to air mass backward trajectories analysis. Based on the distribution patterns of aerosol ions, the studied area was divided into Southeast China coastal sea area and Western Pacific open sea area, and the dry deposition fluxes of DIN for these two areas were 6166 mu g m(-2) day(-1) and 574 mu g m(-2) day(-1), which could support 5.6-19.4% and similar to 13.8% of the new production in the East China Sea and the Western Pacific, respectively. Therefore, atmospheric aerosols as an important medium for transporting nutrients to the study area should attract much attention.
机译：2014年8月至2015年10月和2015年11月在2015年11月至2016年11月的大气气溶胶样品在2016年11月 - 2016年11月，以及主要水溶性离子，No3-，No2-，NH4（+确定，确定PO43-，SO42-，MSA（ - ），CL-和NA +研究其季节性分布，来源和生物地球化学效果。结果表明，冬季NO 3，CL-和NA +的平均浓度较高，而其他离子在夏季浓度较高。大多数水溶性离子在近岸呈现出明显的高价量中心，表明陆地投入的显着影响。陆地投入和海洋发射是导致水溶性离子浓度变化的两个主要因素，尽管它们的相对贡献在夏季和冬季不同。夏季和冬季平均MSA / NSS-SO42-比率分别为1.60％和2.10％，基于哪种人为来源与总SO42-的贡献计算为夏季和冬季的45.7％和30.1％，分别。然而，生物原料来源的贡献在夏季的14.9％和冬季14.9％的贡献显示，没有季节性变化。除了亚洲大陆的空气群众外，根据空气质量向后轨迹分析，日本和印度尼西亚的空气群众也是气溶胶离子的重要陆地来源。基于气溶胶离子的分布模式，研究区分为中国东南沿海地区和西太平洋开放海域，以及这两个地区的DIN的干沉沉圆积为6166亩（-2）天（-1 ）和574亩（-2）天（-1），可分别支持5.6-19.4％，同比，占东海和西太平洋新生产的13.8％。因此，大气气溶胶作为用于将营养物传递到研究区域的重要培养基，应引起很多关注。

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  • 来源
    《Atmospheric research》 |2019年第10期|101-111|共11页
  • 作者

    Wang Qidong; Song Jinming; Li Xuegang; Yuan Huamao; Li Ning; Duan Liqin; Ren Chengzhe;

  • 作者单位

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Shandong Peoples R China|Pilot Natl Lab Marine Sci & Technol Qingdao Lab Marine Ecol & Environm Sci Qingdao 266237 Shandong Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Shandong Peoples R China;

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Shandong Peoples R China|Pilot Natl Lab Marine Sci & Technol Qingdao Lab Marine Ecol & Environm Sci Qingdao 266237 Shandong Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Shandong Peoples R China;

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Shandong Peoples R China|Pilot Natl Lab Marine Sci & Technol Qingdao Lab Marine Ecol & Environm Sci Qingdao 266237 Shandong Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Shandong Peoples R China;

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Shandong Peoples R China|Pilot Natl Lab Marine Sci & Technol Qingdao Lab Marine Ecol & Environm Sci Qingdao 266237 Shandong Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Shandong Peoples R China;

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Shandong Peoples R China|Pilot Natl Lab Marine Sci & Technol Qingdao Lab Marine Ecol & Environm Sci Qingdao 266237 Shandong Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Shandong Peoples R China;

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Shandong Peoples R China|Pilot Natl Lab Marine Sci & Technol Qingdao Lab Marine Ecol & Environm Sci Qingdao 266237 Shandong Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Shandong Peoples R China;

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Shandong Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Shandong Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Atmospheric aerosols; Water-soluble ions; Sources; MSAss-SO42- ratios; Dry deposition flux; Western Pacific;

    机译：大气气溶胶;水溶性离子;来源;MSA / NSS-SO42-比率;干燥沉积通量;西太平洋;

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