The effects of mixing on tracer relationships in the polar vortices
The effects of mixing on tracer relationships in the polar vortices
复制标题
混合对极涡中示踪关系的影响
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
M. Chipperfield
中科院分区：
文献类型：
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作者：
R. A. Plumb;D. Waugh;M. Chipperfield
我们回顾了最近的分析示踪剂观测在北极涡旋，显示异常的示踪剂示踪剂的关系，这表明混合到涡旋的外部空气。类似的异常关系以前已经观察到在涡旋碎片，北极涡旋的崩溃，并解释为混合内的对流碎片的指示。根据其他观察，我们得出结论，这种解释是不正确的：混合发生在破裂之前的旋涡。我们讨论了混合示踪剂的关系内的旋涡，说明了从一个简单的概念模型和两个三维化学输运模型的结果的影响。这些模型表明，穿过涡流边缘的连续混合在涡流内部产生完全改变的示踪剂关系，并且可以发展分离的、紧凑的涡流关系。一般来说，示踪剂关系不应用于估计反硝化作用或臭氧化学损失，除非混合的影响可以量化;这可能是可能的，使用其他示踪剂的信息，但不能假设异常混合的影响表现为简单的混合线示踪剂示踪剂图。
We review recent analyses of tracer observations within the Arctic vortex, showing anomalous tracer-tracer relationships which indicate the mixing of outside air into the vortex. Similar anomalous relationships have previously been observed in vortex fragments, following breakdown of the Arctic vortex, and interpreted as indicative of mixing within the filamentary fragments. In the light of other observations we conclude that this interpretation is incorrect: the mixing took place into the vortex prior to breakdown. We discuss the effects of mixing on tracer relationships within the vortex, illustrated by results both from a simple conceptual model and from two three-dimensional chemical transport models. These models indicate that continuous mixing across the vortex edge produces entirely changed tracer relations inside the vortex and that separate, compact vortex relationships can develop. In general, tracer relationships should not be used to estimate denitrification or chemical ozone loss unless the effects of mixing can be quantified; this may be possible using information from other tracers, but one cannot assume that the effects of anomalous mixing are manifested as simple mixing lines on tracer-tracer diagrams.