Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-18-0094.1 |
Momentum Flux of Convective Gravity Waves Derived from an Offline Gravity Wave Parameterization. Part II: Impacts on the Quasi-Biennial Oscillation | |
Kang, Min-Jee1; Chun, Hye-Yeong1; Kim, Young-Ha2; Preusse, Peter3; Ern, Manfred3 | |
2018-11-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:11页码:3753-3775 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea; Germany |
英文摘要 | The characteristics of small-scale convective gravity waves (CGWs; horizontal wavelengths <100 km) and their contributions to the large-scale flow in the stratosphere, including the quasi-biennial oscillation (QBO), are investigated using an offline calculation of a source-dependent, physically based CGW parameterization with global reanalysis data from 1979 to 2010. The CGW momentum flux (CGWMF) and CGW drag (CGWD) are calculated from the cloud top (source level) to the upper stratosphere using a Lindzen-type wave propagation scheme. The 32-yr-mean CGWD exhibits large magnitudes in the tropical upper stratosphere and near the stratospheric polar night jet (similar to 60 degrees). The maximum positive drag is 0.1 (1.5) ms(-1) 21 day(-1) 21, and the maximum negative drag is20.9 (20.7) ms(-1) 21 day(-1) 21 in January (July) between 3 and 1 hPa. In the tropics, the momentum forcing by CGWs at 30 hPa associated with the QBO in the westerly shear zone is 3.5-6ms(-1) 21 month(-1) 21, which is smaller than that by Kelvin waves, while that by CGWs in the easterly shear zone (3.1-6ms(-1) 21 month(-1) 21) is greater than that by any other equatorial planetary waves or inertio-gravity waves (inertio-GWs). Composite analyses of the easterly QBO (EQBO) and westerly QBO (WQBO) phases reveal that the zonal CGWMF is concentrated near 108N and that the negative (positive) CGWD extends latitudinally to 6208 (6108) at 30 hPa. The strongest (weakest) negative CGWD is in March-May (September-November) during the EQBO, and the strongest (weakest) positive CGWD is in June-August (March-May) during the WQBO. The CGWMF and CGWD are generally stronger during El Nino than during La Nina in the equatorial region. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000450965500001 |
WOS关键词 | DEEP TROPICAL CONVECTION ; OFFICE UNIFIED MODEL ; JET-FRONT SYSTEMS ; MIDDLE ATMOSPHERE ; DRAG PARAMETERIZATION ; LOWER STRATOSPHERE ; GENERAL-CIRCULATION ; EQUATORIAL WAVES ; GLOBAL CLIMATE ; ZONAL WIND |
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/29678 |
专题 | 地球科学 |
作者单位 | 1.Yonsei Univ, Dept Atmospher Sci, Seoul, South Korea; 2.Goethe Univ Frankfurt, Inst Atmosphare & Umwelt, Frankfurt, Germany; 3.Forschungszentrum Julich, Inst Energy & Climate Res, Stratosphere, Julich, Germany |
推荐引用方式 GB/T 7714 | Kang, Min-Jee,Chun, Hye-Yeong,Kim, Young-Ha,et al. Momentum Flux of Convective Gravity Waves Derived from an Offline Gravity Wave Parameterization. Part II: Impacts on the Quasi-Biennial Oscillation[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(11):3753-3775. |
APA | Kang, Min-Jee,Chun, Hye-Yeong,Kim, Young-Ha,Preusse, Peter,&Ern, Manfred.(2018).Momentum Flux of Convective Gravity Waves Derived from an Offline Gravity Wave Parameterization. Part II: Impacts on the Quasi-Biennial Oscillation.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(11),3753-3775. |
MLA | Kang, Min-Jee,et al."Momentum Flux of Convective Gravity Waves Derived from an Offline Gravity Wave Parameterization. Part II: Impacts on the Quasi-Biennial Oscillation".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.11(2018):3753-3775. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论