期刊
JOURNAL OF THE ATMOSPHERIC SCIENCES
卷 75, 期 7, 页码 2175-2186出版社
AMER METEOROLOGICAL SOC
DOI: 10.1175/JAS-D-17-0114.1
关键词
-
资金
- ERC [338965]
- German Research Foundation (DFG)
- Collaborative Research Centre TRR181 Energy Transfers in Atmosphere and Ocean''
- European Research Council (ERC) [338965] Funding Source: European Research Council (ERC)
Atmospheric motions are governed by turbulent motions associated to nontrivial energy transfers at small scales (direct cascade) and/or at large scales (inverse cascade). Although it is known that the two cascades coexist, energy fluxes have been previously investigated from the spectral point of view but not on their instantaneous spatial and local structure. Here, we compute local and instantaneous subfilter-scale energy transfers in two sets of reanalyses (NCEP-NCAR and ERA-Interim) in the troposphere and the lower stratosphere for the year 2005. The fluxes are mostly positive (toward subgrid scales) in the troposphere and negative in the stratosphere, reflecting the baroclinic and barotropic nature of the motions, respectively. The most intense positive energy fluxes are found in the troposphere and are associated with baroclinic eddies or tropical cyclones. The computation of such fluxes can be used to characterize the amount of energy lost or missing at the smallest scales in climate and weather models.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据