Substantial contribution of iodine to Arctic ozone destruction
Substantial contribution of iodine to Arctic ozone destruction
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DOI：
10.1038/s41561-022-01018-w
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发表时间：
2022-09-15
影响因子：
18.3
通讯作者：
Saiz-Lopez, Alfonso
中科院分区：
文献类型：
--
作者：
Benavent, Nuria;Mahajan, Anoop S.;Saiz-Lopez, Alfonso
与溴不同，碘化学对北极地表臭氧收支的影响很难受到限制。我们给出了2020年3月至10月高北极边界层中卤素氧化物的船基测量结果，结果表明，碘增强了春季对流层臭氧的消耗。我们发现，在研究期间，碘和臭氧之间的化学反应是造成臭氧损失的第二大因素，仅次于臭氧光解引发的损失，领先于溴。根据2020年3月至10月对卤素氧化物的船基观测，碘化学在北极对流层臭氧损失中发挥着比溴化学更重要的作用。
Unlike bromine, the effect of iodine chemistry on the Arctic surface ozone budget is poorly constrained. We present ship-based measurements of halogen oxides in the high Arctic boundary layer from the sunlit period of March to October 2020 and show that iodine enhances springtime tropospheric ozone depletion. We find that chemical reactions between iodine and ozone are the second highest contributor to ozone loss over the study period, after ozone photolysis-initiated loss and ahead of bromine.Iodine chemistry plays a more important role than bromine chemistry in tropospheric ozone losses in the Arctic, according to ship-based observations of halogen oxides from March to October 2020.