Unforced, Forced and Resonance-Forced Waves in a Spherical Atmosphere

doi:10.2172/1236743

GSTDTAP > 地球科学

DOI	10.2172/1236743
报告编号	LLNL--TR-678645
来源ID	OSTI ID: 1236743
	Unforced, Forced and Resonance-Forced Waves in a Spherical Atmosphere
	Covey, Curt
	2015-10-27
出版年	2015
页数	10
语种	英语
国家	美国
领域	地球科学
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	查看原文
来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/7082
专题	地球科学
推荐引用方式 GB/T 7714	Covey, Curt. Unforced, Forced and Resonance-Forced Waves in a Spherical Atmosphere,2015.