Bromide and other ions in the snow, firn air, and atmospheric boundary layer at Summit during GSHOX
Bromide and other ions in the snow, firn air, and atmospheric boundary layer at Summit during GSHOX
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GSHOX 期间 Summit 雪、冷空气和大气边界层中的溴化物和其他离子
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
P. Beckman
中科院分区：
文献类型：
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作者：
J. Dibb;L. Ziemba;J. Luxford;P. Beckman
抽象的。在格陵兰萨米特（72.5° N，38.4° W，3200 m a.s.l.）对边界层和积雪空气中的气相可溶性溴化物以及气溶胶和雪中的Br−进行了测量。作为对Br化学对HOx循环的影响的更大调查的一部分。可溶性溴化物的测量结果证实，尽管雪中有微量的Br−浓度（2007年和2008年分别为15和8 nmol Br− kg−1），但雪中Br−的光化学活化导致活性Br释放到上层空气中。可溶性溴化物在雪上方的混合比也很小（平均
Abstract. Measurements of gas phase soluble bromide in the boundary layer and in firn air, and Br− in aerosol and snow, were made at Summit, Greenland (72.5° N, 38.4° W, 3200 m a.s.l.) as part of a larger investigation into the influence of Br chemistry on HOx cycling. The soluble bromide measurements confirm that photochemical activation of Br− in the snow causes release of active Br to the overlying air despite trace concentrations of Br− in the snow (means 15 and 8 nmol Br− kg−1 of snow in 2007 and 2008, respectively). Mixing ratios of soluble bromide above the snow were also found to be very small (mean