On the Gravity Wave Forcing during the Southern Stratospheric Final Warming in LMDZ
On the Gravity Wave Forcing during the Southern Stratospheric Final Warming in LMDZ
复制标题
LMDZ南部平流层最终增温过程中的重力波强迫
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
A. Hertzog
中科院分区：
文献类型：
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作者：
A. Cámara;F. Lott;V. Jewtoukoff;R. Plougonven;A. Hertzog
南方平流层最终增暖日期在几个气候模式中往往被预测得有相当大的延迟。这种系统误差通常归因于60°S附近平流层中参数化重力波（GW）阻力不足。一个模拟与大气环流模型[气象动态缩放模型（LMDZ）]与一个不太明显的偏见是用来分析不同类型的波的最终变暖的动力学的贡献。为此，在LMDZ和再分析资料中检验了南半球春季中层大气的分辨和未分辨波强迫，发现两者之间有很好的一致性。参数化的地形和nonorographic GWs在LMDZ的作用进一步研究，它被发现，地形和nonorographic GWs的贡献均匀的GW强迫在平流层，不像在其他气候模式，地形GWs的主要贡献者。这一结果与实验结果具有良好的一致性。
AbstractThe austral stratospheric final warming date is often predicted with substantial delay in several climate models. This systematic error is generally attributed to insufficient parameterized gravity wave (GW) drag in the stratosphere around 60°S. A simulation with a general circulation model [Laboratoire de Meteorologie Dynamique zoom model (LMDZ)] with a much less pronounced bias is used to analyze the contribution of the different types of waves to the dynamics of the final warming. For this purpose, the resolved and unresolved wave forcing of the middle atmosphere during the austral spring are examined in LMDZ and reanalysis data, and a good agreement is found between the two datasets. The role of parameterized orographic and nonorographic GWs in LMDZ is further examined, and it is found that orographic and nonorographic GWs contribute evenly to the GW forcing in the stratosphere, unlike in other climate models, where orographic GWs are the main contributor. This result is shown to be in good ag...
影响因子：
4.4
作者：
Ern, M.;Ploeger, F.;Riese, M.
通讯作者：
Riese, M.
影响因子：
6.3
作者：
Hindley, N. P.;Wright, C. J.;Mitchell, N. J.
通讯作者：
Mitchell, N. J.