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首页> 外文期刊>Geophysical Research Letters >Frost flowers as a source of fractionated sea salt aerosol in the polar regions
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Frost flowers as a source of fractionated sea salt aerosol in the polar regions

机译:霜花是极地地区盐分海盐气溶胶的来源

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Frost flowers collected from the surface of new sea ice near the Brunt Ice Shelf, Antarctica, show depletion in sulphate and sodium relative to other sea water ions. This is consistent with loss of mirabilite (Na2SO4) during formation of the brine from which the frost flowers grow. Aerosol generated from frost flowers would have higher sodium:sulphate ratios than aerosol generated from sea water. This would explain low values of non-sea-salt sulphate encountered in winter aerosol, and winter layers in ice cores, at coastal Antarctic sites. Calculations confirm that the frost flower source should be significant compared to an open water source for coastal regions. [References: 20]
机译:从南极洲布鲁特冰架附近的新海冰表面收集的霜花显示出相对于其他海水离子而言,硫酸盐和钠的枯竭。这与形成霜花的盐水形成过程中丢失的芒硝(Na2SO4)相一致。霜花产生的气溶胶比海水产生的气溶胶具有更高的钠:硫酸盐比。这可以解释南极沿海地区冬季气溶胶和冰芯冬季层遇到的低值非海盐硫酸盐。计算结果表明,与沿海地区的开放水源相比,霜花源应具有重要意义。 [参考:20]

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