气候变化领域集成服务门户(CCPortal): Effect of lower stratospheric temperature on total ozone column (TOC) during the ozone depletion and recovery phases

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DOI	10.1016/j.atmosres.2019.104686
	Effect of lower stratospheric temperature on total ozone column (TOC) during the ozone depletion and recovery phases
	Ningombam S.S.; Vemareddy P.; Song H.-J.
发表日期	2020
ISSN	0169-8095
卷号	232
英文摘要	Using the Solar Back-scatter Ultraviolet merged ozone data during 1980–2016, the recovery of total ozone column (TOC) is examined in 5° wide latitude bands from 65°S to 65°N across the globe. Since the variability of TOC is influenced by various natural and anthropogenic proxies, a multiple linear regression (MLR) is employed to remove the dynamic variability. Among the proxies, lower stratospheric temperature at ~100hPa plays a significant role in the dynamics of the TOC variability. The MLR model has significantly improved after including the lower stratospheric temperature along with other proxies and the standard deviation of the estimated TOC trend has significantly reduced about 35 to 43% in 50°N-65°N and 16 to 20% in 45°S-65°S after using the lower stratospheric temperature during both the depletion (1980–1996) and recovery (1997–2016) phases. Cooling of lower-middle stratospheric temperature are observed during the depletion phase with −0.09 °C to −0.02 °C year−1. However, during the recovery phase, the temperature at the lower stratosphere is warming. Due to weak signals, the estimated warming trends are not statistically significant. The TOC trends are examined by the increasing or decreasing emission of chlorofluorocarbon, indicated by Equivalent Effective Stratospheric Chlorine (EESC) index. During the recovery phase, the EESC varies from 0.82±0.01 to 0.29±0.005 DU year−1 at 45–65°S using the lower stratospheric temperature. In the northern hemisphere, the recovery trends are weak and varied from 0.21±0.004 to 0.25±0.005 DU year−1 and these trends are statistically significant. This study suggests the importance of the lower stratospheric temperature to derive proper trends using the MLR model. © 2019 Elsevier B.V.
英文关键词	Back-scatter ultraviolet; Equivalent Effective Stratospheric Chlorine; Statistically significant; Total ozone column
学科领域	Backscattering; Linear regression; Ozone layer; Recovery; Dynamic variability; Lower stratospheric temperature; Multiple linear regressions; Northern Hemispheres; Standard deviation; Statistically significant; Stratospheric temperature; Total ozone column; Ozone; air temperature; backscatter; chlorine; ozone depletion; stratosphere; total ozone; trend analysis; ultraviolet radiation; warming
语种	英语
scopus关键词	Backscattering; Linear regression; Ozone layer; Recovery; Dynamic variability; Lower stratospheric temperature; Multiple linear regressions; Northern Hemispheres; Standard deviation; Statistically significant; Stratospheric temperature; Total ozone column; Ozone; air temperature; backscatter; chlorine; ozone depletion; stratosphere; total ozone; trend analysis; ultraviolet radiation; warming
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120590
作者单位	Indian Institute of Astrophysics, Bangalore, 560 034, India; National Institute of Meteorological Sciences, Jeju, South Korea
推荐引用方式 GB/T 7714	Ningombam S.S.,Vemareddy P.,Song H.-J.. Effect of lower stratospheric temperature on total ozone column (TOC) during the ozone depletion and recovery phases[J],2020,232.
APA	Ningombam S.S.,Vemareddy P.,&Song H.-J..(2020).Effect of lower stratospheric temperature on total ozone column (TOC) during the ozone depletion and recovery phases.Atmospheric Research,232.
MLA	Ningombam S.S.,et al."Effect of lower stratospheric temperature on total ozone column (TOC) during the ozone depletion and recovery phases".Atmospheric Research 232(2020).