DOI: 10.1002/2016MS000699
Scopus记录号: 2-s2.0-84978904008
论文题名: Modeling the QBO—Improvements resulting from higher-model vertical resolution
作者: Geller M ; A ; , Zhou T ; , Shindell D ; , Ruedy R ; , Aleinov I ; , Nazarenko L ; , Tausnev N ; L ; , Kelley M ; , Sun S ; , Cheng Y ; , Field R ; D ; , Faluvegi G
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2016
卷: 8, 期: 3 起始页码: 1092
结束页码: 1105
语种: 英语
英文关键词: Clouds
; Gravity waves
; Momentum
; NASA
; Tropics
; Gravity wave momentum
; Modeling transport
; Other model improvements
; Quasi-biennial oscillation
; Transport characteristics
; Tropical tropopause
; Vertical resolution
; Wave-mean-flow interaction
; Climate models
; climate modeling
; gravity wave
; model test
; numerical model
; quasi-biennial oscillation
; stratosphere
; tropopause
; troposphere
; vertical profile
; water vapor
英文摘要: Using the NASA Goddard Institute for Space Studies (GISS) climate model, it is shown that with proper choice of the gravity wave momentum flux entering the stratosphere and relatively fine vertical layering of at least 500 m in the upper troposphere-lower stratosphere (UTLS), a realistic stratospheric quasi-biennial oscillation (QBO) is modeled with the proper period, amplitude, and structure down to tropopause levels. It is furthermore shown that the specified gravity wave momentum flux controls the QBO period whereas the width of the gravity wave momentum flux phase speed spectrum controls the QBO amplitude. Fine vertical layering is required for the proper downward extension to tropopause levels as this permits wave-mean flow interactions in the UTLS region to be resolved in the model. When vertical resolution is increased from 1000 to 500 m, the modeled QBO modulation of the tropical tropopause temperatures increasingly approach that from observations, and the “tape recorder” of stratospheric water vapor also approaches the observed. The transport characteristics of our GISS models are assessed using age-of-air and N2O diagnostics, and it is shown that some of the deficiencies in model transport that have been noted in previous GISS models are greatly improved for all of our tested model vertical resolutions. More realistic tropical-extratropical transport isolation, commonly referred to as the “tropical pipe,” results from the finer vertical model layering required to generate a realistic QBO. © 2016. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75875
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: School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, United States; NASA Goddard Institute for Space Studies, New York, NY, United States; Center for Climate Systems Research, Columbia University, New York, NY, United States; Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, Durham, NC, United States; Trinnovim LLC, New York, NY, United States; NOAA/Earth System Research Laboratory, Boulder, CO, United States; Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States
Recommended Citation:
Geller M,A,, Zhou T,et al. Modeling the QBO—Improvements resulting from higher-model vertical resolution[J]. Journal of Advances in Modeling Earth Systems,2016-01-01,8(3)