|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Planetary Stationary Waves in the Atmosphere Part I: Orographic Stationary Waves显示文摘It is proposed that the orographic stationary waves are required by long-term balance of momentum in the atmosphere with zonally asymmetric orographic forcing. This hypothesis may be confirmed successfully with the theoretical model of geostrophic waves. In the Part I, we will explain the observed phase distributions of orographic stationary waves at middle and high latitudes of the Northern Hemisphere, according to the long-term balance of zonal momentum over the stationary orographic forcing. It is revealed that the geographic distribution of stationary waves depends not only on local topgraphy but also on mean circulation fields and angular momentum flux in the atmosphere. So these waves cannot be simulated by the models in a restricted area. | Yong. L. McHall | 1991 | Advances in Atmospheric Sciences1991，8，2： | 7 |
| 2 | Planetary Stationary Waves in the Atmosphere Part II: Thermal Stationary Waves显示文摘The contribution of thermal forcing to the planetary stationary waves will be studied also by assuming that heat balance in stationary waves over zonally asymmetric thermal forcing must be maintained over a long time period. Using the same model of geostrophic waves introduced in Part I, we may explain successfully the observed and simulated responses to the thermal forcing in the atmosphere, such as the wave 1 structure at high levels of middle latitudes, the seasonal changes of the stationary waves in the Northern Hemisphere, the opposite phase distributions of stationary waves at high and low levels of the subtropical regions in both hemispheres and so on. | Yong. L. McHall | 1991 | Advances in Atmospheric Sciences1991，8，2： | 6 |
| 3 | Blocking Distributions in the Atmosphere显示文摘The zonal momentum generation in forced stationary waves may exceed the requirement for momentum balance after long, if the waves do not change their patterns. This suggests that the changes in stationary wave patterns would be required by maintenance of momentum balance over the external forcings. It will be found that the low frequency anomalies like blocking regimes may produce reversed zonal momentum variations, if they happen in the observed centre areas. The zonal momentum balance in the stationary waves may be maintained effectively by alternation between the normal and blocking circulation regimes. Thus, from the point of long-term zonal momentum balance, we may explain the geographical distributions of the blocking centres and the seasonal variations in blocking areas and frequencies. | Yong. L. McHall | 1991 | Advances in Atmospheric Sciences1991，8，3： | 4 |
| 4 | Large Scale Perturbations in Extratropical Atmosphere-Part Ⅰ: On Rossby Waves显示文摘This study reexamines the propagation mechanism and geostrophic property of the classical two-dimensional Rossby waves in a non-divergent barotropic atmosphere. It will be found that propagation of large scale atmospheric waves depends crucially on horizontal divergence. A small Rossby number in Rossby waves is not sufficient for the waves to have a small ageostrophic component, because the two-dimensional classical Rossby waves do not manifest the geostrophic balance as good as observed in the atmosphere. | Y. L. McHall | 1993 | Advances in Atmospheric Sciences1993，10，2： | 3 |
| 5 | Available potential energy in the atmosphere显示文摘 | Y. L. McHall | 1990 | Meteorology and Atmospheric Physics1990，，1： | 2 |
| 6 | Large Scale Perturbations in Extratropical Atmosphere-Part Ⅱ: On Geostrophic Waves显示文摘We have examined, in Part Ⅰ, the propagation mechanism and geostrophic property of classical Rossby waves in a non-divergent barotropic atmosphere. As we found that the non-divergent Rossby waves do not propagate in a hydrostatically equilibrium atmosphere, and do not manifest a good geostrophic property, an alternative large scale circulation pattern of geostrophic waves has been proposed (McHall, 1991a). The propagation mechanism and geostrophic property of these waves are examined in the present study. | Y.L. McHall | 1993 | Advances in Atmospheric Sciences1993，10，2： | 2 |
| 7 | Available equivalent potential energy in moist atmospheres显示文摘 | Y. L. McHall | 1991 | Meteorology and Atmospheric Physics (-)1991，，3： | 1 |
| 8 | Available potential energy in the atmosphere显示文摘 | Mchall Y L | 1990 | Meteorology and Atmospheric Physics1990，42，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员