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DOI | 10.1029/2018JD030073 |
Gravity Waves in Global High-Resolution Simulations With Explicit and Parameterized Convection | |
Stephan, C. C.1; Strube, C.2; Klocke, D.3; Ern, M.2; Hoffmann, L.2; Preusse, P.2; Schmidt, H.1 | |
2019-04-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:8页码:4446-4459 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | Increasing computing resources allow us to run weather and climate models at horizontal resolutions of 1-10 km. At this range, which is often referred to as the convective gray zone, clouds and convective transport are partly resolved, yet models may not achieve a satisfactory performance without convective parameterizations. Meanwhile, large fractions of the gravity wave (GW) spectrum become resolved at these scales. Convectively generated GWs are sensitive to spatiotemporal characteristics of convective cells. This raises the question of how resolved GWs respond to changes in the treatment of convection. Two global simulations with a horizontal grid spacing of 5 km are performed, one with explicit and one with parameterized convection. The latitudinal profiles of absolute zonal-mean GWmomentum flux match well between both model configurations and observations by satellite limb sounders. However, the simulation with explicit convection shows similar to 30-50% larger zonal-mean momentum fluxes in the summer hemisphere subtropics, where convection is the dominant source of GWs. Our results imply that changes in convection associated with the choice of explicit versus parameterized convection can have important consequences for resolved GWs, with broad implications for the circulation and the transport in the middle atmosphere. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000469071400011 |
WOS关键词 | GENERAL-CIRCULATION ; MOMENTUM FLUX ; ECMWF MODEL ; CLIMATE ; DRAG ; SPECTRUM ; PARAMETRIZATION ; VARIABILITY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182467 |
专题 | 气候变化 |
作者单位 | 1.Max Planck Inst Meteorol, Hamburg, Germany; 2.Forschungszentrum Julich, Julich, Germany; 3.Deutsch Wetterdienst, Hans Ertel Zentrum Wetterforsch, Offenbach, Germany |
推荐引用方式 GB/T 7714 | Stephan, C. C.,Strube, C.,Klocke, D.,et al. Gravity Waves in Global High-Resolution Simulations With Explicit and Parameterized Convection[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(8):4446-4459. |
APA | Stephan, C. C..,Strube, C..,Klocke, D..,Ern, M..,Hoffmann, L..,...&Schmidt, H..(2019).Gravity Waves in Global High-Resolution Simulations With Explicit and Parameterized Convection.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(8),4446-4459. |
MLA | Stephan, C. C.,et al."Gravity Waves in Global High-Resolution Simulations With Explicit and Parameterized Convection".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.8(2019):4446-4459. |
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