Atmospheric Gravity Waves: Processes and Parameterization
Atmospheric Gravity Waves: Processes and Parameterization
复制标题
大气重力波：过程和参数化
DOI：
10.1175/jas-d-23-0210.1
复制
发表时间：
2023
影响因子：
3.1
通讯作者：
Achatz U
中科院分区：
文献类型：
--
作者：
Achatz U
从亚季节到季节时间尺度的大气可预测性和气候变率都受到重力波的重要影响。区域和全球数值模式的质量依赖于对GW动力学及其与化学、降水、云和气候在多个尺度上的相互作用的透彻理解。在可预见的未来，全球变暖和许多其他相关过程仍将部分无法解决，模式将继续依赖于参数化。最近的模式相互比较和研究表明，目前的全球变暖参数化不能准确地代表全球变暖过程。在预测气候变化对重要变率模态的影响时，这些缺点带来了不确定性。然而，过去十年在理论和数值发展方面产生了新的数据和进展，有望改善这种情况。本文综述了这些发展，讨论了GW参数化的现状，并就如何从那里着手提出了建议。
Atmospheric predictability from subseasonal to seasonal time scales and climate variability are both influenced critically by gravity waves (GW). The quality of regional and global numerical models relies on thorough understanding of GW dynamics and its interplay with chemistry, precipitation, clouds, and climate across many scales. For the foreseeable future, GWs and many other relevant processes will remain partly unresolved, and models will continue to rely on parameterizations. Recent model intercomparisons and studies show that present-day GW parameterizations do not accurately represent GW processes. These shortcomings introduce uncertainties, among others, in predicting the effects of climate change on important modes of variability. However, the last decade has produced new data and advances in theoretical and numerical developments that promise to improve the situation. This review gives a survey of these developments, discusses the present status of GW parameterizations, and formulates recommendations on how to proceed from there.