Comment on ″A seasonal budget of the Earth's axial angular momentum″by Naito and Kikuchi
Comment on ″A seasonal budget of the Earth's axial angular momentum″by Naito and Kikuchi
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DOI：
10.1029/91gl02312
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发表时间：
1991-10
影响因子：
5.2
通讯作者：
R. Rosen;D. Salstein
中科院分区：
文献类型：
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作者：
R. Rosen;D. Salstein
根据平流层风的季节变化可能对全球动量收支有重要贡献的建议，Rosen和Salstein [1985；[RS]表明，以前认为在年度和半年度预算中存在的不平衡可以通过纳入尽可能多的大气高度的风数据在很大程度上消除。内藤和菊池[1990；（以下简称NK）利用日本气象厅（JMA）对1000至10 rob压力水平的分析，重新审视了这一主题和核心-大气耦合的作用，他们报告说，这些数据并不完全支持RS的结论。我们在这里探讨了这种分歧的一些原因。特别是，NK报告了大气角动量和日长（LOD）在半年周期的变化之间约有6%的差异
Guided by suggestions that seasonal variations in stratospheric winds could contribute importanfiy to the global momentum budget, Rosen and Salstein [1985; hereinafter RS] show that irabalances previously thought to exist in this budget at annual and semiannual periods may be largely eliminated by incorporating wind data through as much of the height of the atmosphere as possible. Naito and Kikuchi [1990; hereinafter NK] revisit this subject and the role of core-manfie coupling using analyses produced by the Japan Meteorological Agency (JMA) for pressure levels from 1000 to 10 rob, and they report that these data do not entirely support he conclusions of RS. We explore some reasons for this disagreement here. In particular, NK report a discrepancy of about 6% between variations in atmospheric angular momentum and the length-of-day (LOD) at the semiannual period not found by