globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2014MS000396
Scopus记录号: 2-s2.0-85027944728
论文题名:
Realistic simulations of atmospheric gravity waves over the continental U.S. using precipitation radar data
作者: Stephan C; , Alexander M; J
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2015
卷: 7, 期:2
起始页码: 823
结束页码: 835
语种: 英语
英文关键词: Gravity waves ; Heat convection ; Radar ; Rain ; Upper atmosphere ; Atmospheric gravity waves ; Cloud resolving model ; Cloud-resolving model simulations ; Convective rain cells ; Convectively forced gravity waves ; Idealized models ; Latent heating/cooling ; Quantitative agreement ; Precipitation (meteorology) ; algorithm ; amplitude ; atmospheric wave ; cloud cover ; cloud microphysics ; cloud radiative forcing ; continental margin ; convection ; data set ; gravity wave ; latent heat flux ; middle atmosphere ; model validation ; precipitation (climatology) ; radar ; satellite data ; troposphere ; wave modeling ; United States
英文摘要: Convectively forced gravity waves can affect the dynamics of the upper troposphere and middle atmosphere on local to global scales. Simulating these waves requires cloud-resolving models, which are computationally expensive and therefore limited to case studies. Furthermore, full-physics models cannot accurately reproduce the locations, timing, and intensity of individual convective rain cells, limiting the validation of simulated waves. Here, we present a new modeling approach that retains the spatial scope of larger-scale models but permits direct validation of the modeled waves with individual cases of observed waves. Full-physics cloud-resolving model simulations are used to develop an algorithm for converting instantaneous radar precipitation rates over the U.S. into a high-resolution latent heating/cooling field. This heating field is used to force an idealized dry version of the WRF model. Wave patterns and amplitudes observed in individual satellite overpasses are reproduced with remarkable quantitative agreement. The relative simplicity of the new model permits longer simulations with much larger and deeper domains needed to simulate wave horizontal/vertical propagation. Eliminating the complicating factors of cloud physics and radiation this approach provides a link between conceptual and full-physics models and is suitable for studying wave-driven far-field circulation patterns. © 2015. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/76061
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: Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO, United States; NorthWest Research Assoc., Inc., CoRA Office, Boulder, CO, United States

Recommended Citation:
Stephan C,, Alexander M,J. Realistic simulations of atmospheric gravity waves over the continental U.S. using precipitation radar data[J]. Journal of Advances in Modeling Earth Systems,2015-01-01,7(2)
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