Sulfur dioxide incorporation into ice depositing from the vapor
Sulfur dioxide incorporation into ice depositing from the vapor
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二氧化硫融入蒸气沉积的冰中
DOI：
10.1029/jd094id01p01095
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发表时间：
1989
影响因子：
--
通讯作者：
R. Bales
中科院分区：
文献类型：
--
作者：
M. P. Valdez;G. A. Dawson;R. Bales
一项实验研究了将 SO{sub 2} 掺入到在 {-15C 下由蒸气沉积的冰中。令人惊讶的是，SO{sub 2} 在沉积冰中被捕获，其浓度与 0℃ 下 SO{sub 2}/S(IV) 水平衡给出的浓度相当。这一结果的结果是，在遥远的对流层中，SO{sub 2} 的未覆盖雪清除率可能与硫酸盐的清除率相当。此外，臭氧和 HCHO 似乎会抑制而不是增强 SO{sub 2} 的吸收。开发了水膜模型来解释 SO{sub 2} 捕获。如果 SO{sub 2} 溶解在生长的冰表面上的液体状层中，则由于远离前进的冰/层界面的扩散传输延迟，层内 S(IV) 物质的浓度可能会增加。尽管溶质被有效地从冰中排除，但这样的浓度增加可以产生显着的溶质掺入到块状冰中。
An experimental study has been made of the incorporation of SO{sub 2} into ice depositing from the vapor at {minus}15C. Surprisingly, SO{sub 2} was captured in deposited ice at concentrations comparable to those given by SO{sub 2}/S(IV) aqueous equilibrium at 0C. A consequence of this result is that, in the remote troposphere, unrimed snow scavenging ratios for SO{sub 2} may be comparable to those for sulfate. In addition, ozone and HCHO appeared to inhibit, rather than enhance, SO{sub 2} uptake. An aqueous-film model is developed to account for SO{sub 2} capture. If SO{sub 2} dissolves in a liquidlike layer on growing ice surfaces, the concentration of S(IV) species may become enhanced within the layer as a result of retarded diffusional transport away from the advancing ice/layer interface. Such a concentration increase can produce significant solute incorporation into the bulk ice, despite effective solute rejection from the ice.