globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2016MS000824
Scopus记录号: 2-s2.0-85013178088
论文题名:
Sensitivity of the quasi-biennial oscillation simulated in WACCM to the phase speed spectrum and the settings in an inertial gravity wave parameterization
作者: Yu C; , Xue X; , Wu J; , Chen T; , Li H
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期:1
起始页码: 389
结束页码: 403
语种: 英语
英文关键词: Climate models ; Gravity waves ; Oscillators (mechanical) ; Radiosondes ; Inertia gravity waves ; Inertial gravity wave ; Intermittency factors ; Quasi-biennial oscillation ; Radiosonde observations ; Spatial resolution ; Spontaneous generation ; Whole atmosphere community climate models ; Parameterization ; climate modeling ; Gaussian method ; gravity wave ; numerical method ; parameterization ; quasi-biennial oscillation ; radiosonde ; sensitivity analysis ; spatial resolution ; stratosphere ; tropical environment
英文摘要: The application of inertial gravity wave parameterization has allowed for the spontaneous generation of quasi-biennial oscillation (QBO) in the Whole Atmosphere Community Climate Model (WACCM), although there is some mismatch when comparing with observations. The parameterization is based on Lindzen's linear saturation theory, modified to describe inertia-gravity waves (IGW) by considering the Coriolis effect. In this work, we improve the parameterization by importing a more realistic IGW phase speed spectrum that exhibits a double peak Gaussian distribution calculated from tropical radiosonde observations. A series of numeric simulations are performed to test the sensitivity of QBO-like oscillation features to the phase speed spectrum and the settings of parameterized IGW. All these simulations are capable of generating equatorial wind oscillations in the stratosphere based on standard spatial resolution settings. Central phase speeds of the “double-Gaussian parameterization” affect QBO magnitudes and periods, and the momentum flux of IGW determines the acceleration rate of zonal wind. Furthermore, stronger IGW forcing can lead to a propagation of the QBO-like oscillation to lower altitude. The intermittency factor of the parameterization also prominently affects the QBO period. Stratospheric QBO-like oscillation with obvious improvements is generated using the new IGW parameterization in a long-time simulation. © 2017. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75816
Appears in Collections:影响、适应和脆弱性
气候变化与战略

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作者单位: CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei, China; Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui, China; Collaborative Innovation Center of Astronautical Science and Technology, Hefei, Anhui, China

Recommended Citation:
Yu C,, Xue X,, Wu J,et al. Sensitivity of the quasi-biennial oscillation simulated in WACCM to the phase speed spectrum and the settings in an inertial gravity wave parameterization[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(1)
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