Arctic ozone loss due to denitrification
Arctic ozone loss due to denitrification
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DOI：
10.1126/science.283.5410.2064
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发表时间：
1999-03
期刊：
影响因子：
56.9
通讯作者：
A. Waibel;T. Peter;K. Carslaw;H. Oelhaf;G. Wetzel;P. Crutzen;U. Pöschl;A. Tsias;E. Reimer;H. Fischer
中科院分区：
文献类型：
--
作者：
A. Waibel;T. Peter;K. Carslaw;H. Oelhaf;G. Wetzel;P. Crutzen;U. Pöschl;A. Tsias;E. Reimer;H. Fischer
1994-95年冬季的测量结果表明，北极平流层中的总活性氮通过颗粒沉降去除，用来约束一个微物理模型。该模型表明，反硝化作用主要是由小密度的三水硝酸颗粒引起的。反硝化被证明大大增加了北极臭氧的损失。敏感性研究表明，北极平流层目前正处于反硝化的门槛。这意味着，未来由人为二氧化碳负荷增加引起的平流层降温可能会加强反硝化作用，并将北极平流层臭氧恢复到工业化前的价值推迟到下个世纪末。
Measurements from the winter of 1994-95 indicating removal of total reactive nitrogen from the Arctic stratosphere by particle sedimentation were used to constrain a microphysical model. The model suggests that denitrification is caused predominantly by nitric acid trihydrate particles in small number densities. The denitrification is shown to increase Arctic ozone loss substantially. Sensitivity studies indicate that the Arctic stratosphere is currently at a threshold of denitrification. This implies that future stratospheric cooling, induced by an increase in the anthropogenic carbon dioxide burden, is likely to enhance denitrification and to delay until late in the next century the return of Arctic stratospheric ozone to preindustrial values.