DOI: 10.1175/JCLI-D-15-0809.1
Scopus记录号: 2-s2.0-84973379019
论文题名: Structure and dynamics of the Quasi-biennial oscillation in MERRA-2
作者: Coy L. ; Wargan K. ; Molod A.M. ; McCarty W.R. ; Pawson S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 14 起始页码: 5339
结束页码: 5354
语种: 英语
Scopus关键词: Chemical analysis
; Digital storage
; Dynamics
; NASA
; Oscillators (mechanical)
; Signal analysis
; Wind
; Data assimilation
; Meridional circulation
; Quasi-biennial oscillation
; Research and application
; Retrospective analysis
; Stratospheric circulations
; Structure and dynamics
; Transport experiments
; Ozone
; atmospheric circulation
; atmospheric dynamics
; atmospheric modeling
; atmospheric structure
; data assimilation
; quasi-biennial oscillation
; stratosphere
; zonal wind
; Singapore [Southeast Asia]
英文摘要: The structure, dynamics, and ozone signal of the quasi-biennial oscillation (QBO) produced by the 35-yr NASA Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2), are examined based on monthly mean output. Along with the analysis of the QBO in assimilation winds and ozone, the QBO forcings created by assimilated observations, dynamics, parameterized gravity wave drag (GWD), and ozone chemistry parameterization are examined and compared with the original MERRA system. Results show that MERRA-2 produces a realistic QBO in the zonal winds, mean meridional circulation, and ozone over the 1980-2015 time period. In particular, the MERRA-2 zonal winds show improved representation of the QBO 50-hPa westerly phase amplitude at Singapore when compared to MERRA. The use of limb ozone observations creates improved vertical structure and realistic downward propagation of the ozone QBO signal during times when the MLS ozone limb observations are available (from October 2004 to present). The increased equatorial GWD in MERRA-2 has reduced the zonal wind data analysis contribution compared to MERRA so that the QBO mean meridional circulation can be expected to be more physically forced and therefore more physically consistent. This can be important for applications in which MERRA-2 winds are used to drive transport experiments. © 2016 American Meteorological Society. 资助项目: NASA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50345
Appears in Collections: 气候变化事实与影响
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作者单位: NASA GSFC, Greenbelt, MD, United States; SSAI, Lanham, MD, United States; Earth System Science Interdisciplinary Center, University of Maryland, College Park, College Park, MD, United States
Recommended Citation:
Coy L.,Wargan K.,Molod A.M.,et al. Structure and dynamics of the Quasi-biennial oscillation in MERRA-2[J]. Journal of Climate,2016-01-01,29(14)