Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-11177-2017 |
Shift of subtropical transport barriers explains observed hemispheric asymmetry of decadal trends of age of air | |
Stiller, Gabriele P.1; Fierli, Federico2; Ploeger, Felix3; Cagnazzo, Chiara2; Funke, Bernd4; Haenel, Florian J.1; Reddmann, Thomas1; Riese, Martin3; von Clarmann, Thomas1 | |
2017-09-21 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:18 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Italy; Spain |
英文摘要 | In response to global warming, the Brewer-Dobson circulation in the stratosphere is expected to accelerate and the mean transport time of air along this circulation to decrease. This would imply a negative stratospheric age of air trend, i.e. an air parcel would need less time to travel from the tropopause to any point in the stratosphere. Age of air as inferred from tracer observations, however, shows zero to positive trends in the northern mid-latitude stratosphere and zonally asymmetric patterns. Using satellite observations and model calculations we show that the observed latitudinal and vertical patterns of the decadal changes of age of air in the lower to middle stratosphere during the period 2002-2012 are predominantly caused by a southward shift of the circulation pattern by about 5 degrees. After correction for this shift, the observations reveal a hemispherically almost symmetric decrease of age of air in the lower to middle stratosphere up to 800K of up to 0.25 years over the 2002-2012 period with strongest decrease in the northern tropics. This net change is consistent with long-term trends from model predictions. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000411363100001 |
WOS关键词 | BREWER-DOBSON CIRCULATION ; STRATOSPHERIC AIR ; MEAN AGE ; RESIDUAL CIRCULATION ; GLOBAL DISTRIBUTION ; MIPAS RETRIEVAL ; VARIABILITY ; OZONE ; EVOLUTION ; VALIDATION |
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/20602 |
专题 | 地球科学 |
作者单位 | 1.Karlsruhe Inst Technol, IMK, POB 3640, D-76021 Karlsruhe, Germany; 2.CNR, Inst Atmospher Sci & Climate, Via Fosso Cavaliere 100, I-00199 Rome, Italy; 3.Forschungszentrum Julich, Inst Energy & Climate Res Stratosphere IEK 7, D-52425 Julich, Germany; 4.CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain |
推荐引用方式 GB/T 7714 | Stiller, Gabriele P.,Fierli, Federico,Ploeger, Felix,et al. Shift of subtropical transport barriers explains observed hemispheric asymmetry of decadal trends of age of air[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(18). |
APA | Stiller, Gabriele P..,Fierli, Federico.,Ploeger, Felix.,Cagnazzo, Chiara.,Funke, Bernd.,...&von Clarmann, Thomas.(2017).Shift of subtropical transport barriers explains observed hemispheric asymmetry of decadal trends of age of air.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(18). |
MLA | Stiller, Gabriele P.,et al."Shift of subtropical transport barriers explains observed hemispheric asymmetry of decadal trends of age of air".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.18(2017). |
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