Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL072792 |
Revisiting Southern Hemisphere polar stratospheric temperature trends in WACCM: The role of dynamical forcing | |
Calvo, N.1,2; Garcia, R. R.2; Kinnison, D. E.2 | |
2017-04-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; USA |
英文摘要 | The latest version of the Whole Atmosphere Community Climate Model (WACCM), which includes a new chemistry scheme and an updated parameterization of orographic gravity waves, produces temperature trends in the Antarctic lower stratosphere in excellent agreement with radiosonde observations for 1969-1998 as regards magnitude, location, timing, and persistence. The maximum trend, reached in November at 100hPa, is -4.42.8Kdecade(-1), which is a third smaller than the largest trend in the previous version of WACCM. Comparison with a simulation without the updated orographic gravity wave parameterization, together with analysis of the model's thermodynamic budget, reveals that the reduced trend is due to the effects of a stronger Brewer-Dobson circulation in the new simulations, which warms the polar cap. The effects are both direct (a trend in adiabatic warming in late spring) and indirect (a smaller trend in ozone, hence a smaller reduction in shortwave heating, due to the warmer environment). |
英文关键词 | temperature trends Brewer-Dobson circulation chemistry-climate model WACCM |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400186500050 |
WOS关键词 | CLIMATE-CHANGE ; 20TH-CENTURY ; ATMOSPHERE ; OZONE ; MODEL |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/26392 |
专题 | 气候变化 |
作者单位 | 1.Univ Complutense Madrid, Fac Ciencias Fis, Dept Fis Tierra 2, Madrid, Spain; 2.Natl Ctr Atmospher Res, Atmospher Chem Observat & Modeling Lab, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Calvo, N.,Garcia, R. R.,Kinnison, D. E.. Revisiting Southern Hemisphere polar stratospheric temperature trends in WACCM: The role of dynamical forcing[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(7). |
APA | Calvo, N.,Garcia, R. R.,&Kinnison, D. E..(2017).Revisiting Southern Hemisphere polar stratospheric temperature trends in WACCM: The role of dynamical forcing.GEOPHYSICAL RESEARCH LETTERS,44(7). |
MLA | Calvo, N.,et al."Revisiting Southern Hemisphere polar stratospheric temperature trends in WACCM: The role of dynamical forcing".GEOPHYSICAL RESEARCH LETTERS 44.7(2017). |
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