| DOI: | 10.2172/1236743
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| 报告号: | LLNL--TR-678645
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| 报告题名: | Unforced, Forced and Resonance-Forced Waves in a Spherical Atmosphere |
| 作者: | Covey, Curt
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| 出版年: | 2015
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| 发表日期: | 2015-10-27
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| 总页数: | 10
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| 国家: | 美国
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| 语种: | 英语
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| 中文主题词: | 大气科学
; 表面压力
; 潮汐
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| 主题词: | ATMOSPHERE
; SURFACE PRESSURE
; TIDES
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| 英文摘要: | This technical report discusses a longstanding issue of atmospheric tides in weather-prediction and general circulation models (GCMs). Tidal signatures consistent with observations have appeared in the surface pressure output of GCMs since their inception (Hardy 1968, Hunt and Manabe 1968). Such models, however, are sufficiently complicated that the possibility of âgetting the right answer for the wrong reasonsâ arises. Lindzen et al. (1968, hereafter LBK) showed that wave reflection at the upper boundary of a GCM can artificially enhance the tides. Covey et al. (2011, 2014) found that tidal output from a number of modern GCMs is surprisingly independent of their forcing. This finding is consistent with earlier suggestions that a compensating effect occurs in some models: lowering the model top reduces the forcing (solar heating of the ozone layer) but also enhances spurious wave reflection (Zwiers and Hamilton 1986, Hamilton et al. 2008). |
| URL: | http://www.osti.gov/scitech/servlets/purl/1236743
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/41728
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1236743.pdf（400KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Covey, Curt. Unforced, Forced and Resonance-Forced Waves in a Spherical Atmosphere. 2015-01-01.
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