Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-1313-2017 |
Time-varying changes in the simulated structure of the Brewer-Dobson Circulation | |
Garfinkel, Chaim I.1; Aquila, Valentina2,3,4; Waugh, Darryn W.2; Oman, Luke D.4 | |
2017-01-30 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | Israel; USA |
英文摘要 | A series of simulations using the NASA Goddard Earth Observing System Chemistry Climate Model are analyzed in order to assess changes in the Brewer-Dobson Circulation (BDC) over the past 55 years. When trends are computed over the past 55 years, the BDC accelerates throughout the stratosphere, consistent with previous modeling results. However, over the second half of the simulations (i.e., since the late 1980s), the model simulates structural changes in the BDC as the temporal evolution of the BDC varies between regions in the stratosphere. In the mid-stratosphere in the midlatitude Northern Hemisphere, the BDC does not accelerate in the ensemble mean of our simulations despite increases in greenhouse gas concentrations and warming sea surface temperatures, and it even decelerates in one ensemble member. This deceleration is reminiscent of changes inferred from satellite instruments and in situ measurements. In contrast, the BDC in the lower stratosphere continues to accelerate. The main forcing agents for the recent slowdown in the mid-stratosphere appear to be declining ozone-depleting substance (ODS) concentrations and the timing of volcanic eruptions. Changes in both mean age of air and the tropical upwelling of the residual circulation indicate a lack of recent acceleration. We therefore clarify that the statement that is often made that climate models simulate a decreasing age throughout the stratosphere only applies over long time periods and is not necessarily the case for the past 25 years, when most tracer measurements were taken. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000394606200001 |
WOS关键词 | CHEMISTRY-CLIMATE MODEL ; STRATOSPHERIC AIR ; TEMPERATURE TRENDS ; MEAN AGE ; IN-SITU ; TROPOSPHERE ; VARIABILITY ; UNCERTAINTIES ; ACCELERATION ; EVOLUTION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/25005 |
专题 | 地球科学 |
作者单位 | 1.Hebrew Univ Jerusalem, Fredy & Nadine Herrmann Inst Earth Sci, Jerusalem, Israel; 2.Johns Hopkins Univ, Dept Earth & Planetary Sci, Baltimore, MD 21218 USA; 3.Goddard Earth Sci Technol & Res, Greenbelt, MD USA; 4.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA |
推荐引用方式 GB/T 7714 | Garfinkel, Chaim I.,Aquila, Valentina,Waugh, Darryn W.,et al. Time-varying changes in the simulated structure of the Brewer-Dobson Circulation[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(2). |
APA | Garfinkel, Chaim I.,Aquila, Valentina,Waugh, Darryn W.,&Oman, Luke D..(2017).Time-varying changes in the simulated structure of the Brewer-Dobson Circulation.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(2). |
MLA | Garfinkel, Chaim I.,et al."Time-varying changes in the simulated structure of the Brewer-Dobson Circulation".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.2(2017). |
条目包含的文件 | 条目无相关文件。 |
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