Mesoscale cellular convection: is it convection?
Mesoscale cellular convection: is it convection?
复制标题
中尺度细胞对流：是对流吗？
DOI：
10.3402/tellusa.v37i2.11663
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发表时间：
1985
期刊：
影响因子：
2
通讯作者：
B. Fiedler
中科院分区：
文献类型：
--
作者：
B. Fiedler
本文比较了三种旨在解释宽展弦比的中尺度胞状对流（MCC）的对流不稳定模式和Fiedler（1984）提出的中尺度卷吸不稳定（MEI）模式的一个简单分析版本。指出了对流模式的不足之处。在MEI模式中，MCC是由卷吸通量的中尺度不稳定从上方产生的。MEI能够解释MCC的宽高比。然而，MEI的预测增长率仅为10 - 5s-1的数量级，这可能太小而不能解释MCC的振幅。战术进行了讨论，使飞机的意见，可以揭示MCC是由MEI或对流内的混合层。DOI：10.1111/j.1600-0870.1985.tb00278.x
The three convective instability models that aim to account for the broad aspect ratio of mesoscale cellular convection (MCC) are compared with a simple analytical version of the mesoscale entrainment instability (MEI) model proposed by Fiedler (1984). The inadequacies of the convective models are demonstrated. In the MEI model, the MCC is generated from above by a mesoscale instability in the entrainment fluxes. MEI is able to account for the broad aspect ratio of MCC. However the predicted growth rate for MEI is only of order 10 -5 s -1 , which may be too small to account for the amplitude of MCC. Tactics are discussed for making aircraft observations that could reveal whether MCC is generated by MEI or by convection within the mixed layer. DOI: 10.1111/j.1600-0870.1985.tb00278.x