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DOI10.1029/2019JD030754
Determination of the "Wave Turbopause" Using a Numerical Differentiation Method
Zhao, X. R.1; Sheng, Z.1,2; Li, W.1; Yu, H.1; Wei, K. J.1
2019-10-17
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2019
文章类型Article;Early Access
语种英语
国家Peoples R China
英文摘要

This paper proposes a new algorithm to determine the wave turbopause based on numerical differentiation using temperature data collected from the Sounding of the Atmosphere using Broadband Emission Radiometry onboard the Thermosphere Ionosphere Mesosphere Energetics Dynamics satellite. The vertical gradient profile of the temperature standard deviation, which serves as a proxy of wave activity, is obtained based on Tikhonov regularization. In the vicinity of the altitude of wave turbopause, wave damping is much reduced, and upward wave propagation occurs with little damping effect. The corresponding vertical gradient profile should reach a maximum with values that are no longer negative. Thus, we determine the wave turbopause as the unique maximum that is the first after the last change in the derivative value from negative to positive. The wave turbopause altitudes determined by this new method agree well with those of previous studies, especially regarding the behavior of the monthly variation. The error of the wave turbopause altitude derived from this new method is 1.9 km, which is much improved from the error of 3.3 km estimated by the previous method. Additionally, latitudinal variations of the wave turbopause altitude for different seasons and their monthly variations for 0 degrees, 30 degrees N, and 70 degrees N latitudes during 2016-2018 are presented. Similar to the mesopause, the wave turbopause also exhibits a two-level structure with a summer minimum at high latitudes.


英文关键词wave turbopause numerical differentiation
领域气候变化
收录类别SCI-E
WOS记录号WOS:000490646400001
WOS关键词RECONSTRUCTION ; TEMPERATURE ; MESOPAUSE ; LAYERS ; TOMEX
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
被引频次:38[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/187701
专题气候变化
作者单位1.Natl Univ Def Technol, Coll Meteorol & Oceanog, Nanjing, Jiangsu, Peoples R China;
2.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China
推荐引用方式
GB/T 7714
Zhao, X. R.,Sheng, Z.,Li, W.,et al. Determination of the "Wave Turbopause" Using a Numerical Differentiation Method[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019.
APA Zhao, X. R.,Sheng, Z.,Li, W.,Yu, H.,&Wei, K. J..(2019).Determination of the "Wave Turbopause" Using a Numerical Differentiation Method.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES.
MLA Zhao, X. R.,et al."Determination of the "Wave Turbopause" Using a Numerical Differentiation Method".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2019).
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