Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2018.11.001 |
Abrupt changes in global tropospheric temperature | |
Varotsos, C. A.; Efstathiou, M. N.; Christodoulakis, J. | |
2019-03-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2019 |
卷号 | 217页码:114-119 |
文章类型 | Article |
语种 | 英语 |
国家 | Greece |
英文摘要 | The temporal evolution of the temperature of the lower troposphere, middle troposphere, tropopause and lower stratosphere on a global, hemispheric and latitudinal basis is studied using the recent Version 6 of the UAH MSU/AMSU global satellite temperature data set. The analysis showed that any long-term increase or decrease in temperature is not smooth and uniform, i.e., it is not slow and monotonous. In contrast, it grows or decreases monotonously in a short period, then almost stabilizes for some time, and then repeats the same pattern. In other words, the long-term temperature trend is not linear but follows the stepwise increase or decrease. In more concrete, the temperature time series over the period 12/1978-07/2018 is composed by a noisy pattern superposed on a stepwise function with abrupt shifts in 1986, 1994 and 2014. In addition, we noticed that the superposition of the stepwise function on the ENSO time series provides a new composite time series, which fits very well with the observed temperature. If the latter is delayed for almost 4 months this fit is even better. This pattern applies to the temperature of the troposphere on a global, hemispheric and tropical basis. It does not apply to the temperature of the troposphere over the extratropics and polar regions, as well as to the temperature of the lower stratosphere. In particular, the extra-tropics of the northern hemisphere displays an Arctic Oscillation stair-shaped behaviour. Perhaps the stepwise pattern in temperature evolution may be due to the fact that the gradual changes in the periodic or quasi-periodic tropospheric temperature components may trigger sudden changes which with positive feedbacks, lead to a self-enhancing change. This can be so strong that the temperature reaches critical values and then with sudden changes goes from one equilibrium state to another. |
英文关键词 | Troposphere Stratosphere Temperature Sudden changes |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452931100011 |
WOS关键词 | CLIMATE ; OZONE ; STRATOSPHERE ; SATELLITE ; SIGNATURE ; DYNAMICS ; GASES |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/15247 |
专题 | 地球科学 |
作者单位 | Univ Athens, Fac Phys, Div Environm Phys & Meteorol, Climate Res Grp, Univ Campus Bldg Phys 5, Athens 15784, Greece |
推荐引用方式 GB/T 7714 | Varotsos, C. A.,Efstathiou, M. N.,Christodoulakis, J.. Abrupt changes in global tropospheric temperature[J]. ATMOSPHERIC RESEARCH,2019,217:114-119. |
APA | Varotsos, C. A.,Efstathiou, M. N.,&Christodoulakis, J..(2019).Abrupt changes in global tropospheric temperature.ATMOSPHERIC RESEARCH,217,114-119. |
MLA | Varotsos, C. A.,et al."Abrupt changes in global tropospheric temperature".ATMOSPHERIC RESEARCH 217(2019):114-119. |
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