气候变化领域集成服务门户(CCPortal): Intriguing aspects of Asian Summer Monsoon Anticyclone Ozone variability from Microwave Limb Sounder measurements

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DOI	10.1016/j.atmosres.2021.105479
	Intriguing aspects of Asian Summer Monsoon Anticyclone Ozone variability from Microwave Limb Sounder measurements
	Kumar K.R.; Singh B.B.; Kumar K.N.
发表日期	2021
ISSN	0169-8095
卷号	253
英文摘要	Using the long-term (2005–2019) observations from the Microwave Limb Sounder (MLS) onboard Aqua satellite, the present study delineates the variability of the lower stratospheric ozone (LSO) in the Asian Summer Monsoon Anticyclone (ASMA) region. The climatological features of LSO indicate a peak minimum in the southern flank of ASMA noticed by the geopotential measurements from MLS. Further, the temporal variability of LSO indicates significant interannual variability during the 15 years of MLS observations. Our analysis found that two prominent source regions control the LSO variability at interannual time scales in the ASMA region, associated with the Pacific and Indian Ocean sea surface temperatures. More importantly, the extreme (positive/negative) values in ozone anomalies coincide with the El Niño–Southern Oscillation(El Niño/La Niña) events. Further, the composite analysis reveals a significant change in the mean magnitude of LSO of about 10 ppb between El Niño and La Niña phases. The results indicate that reduced water vapor transport due to subsidence and suppressed convection during the El Niño phase leads to less mixing across the upper troposphere and lower stratosphere, therefore, causing higher concentrations of ozone and vice-versa during the La Niña phase. Hence, this study indicates a strong implication for the climatic perturbations over the ASMA region. © 2021 Elsevier B.V.
英文关键词	Asian Monsoon Anticyclone; ENSO; Ozone; Sea Surface Temperature
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/236851
作者单位	Centre for Atmospheric Sciences, Indian Institute of Technology Delhi110016, India; Centre for Climate Change Research, Indian Institute of Tropical Meteorology, Ministry of Earth Sciences, Pune, 411008, India; National Centre for Medium Range Weather Forecasting, Ministry of Earth Sciences201309, India
推荐引用方式 GB/T 7714	Kumar K.R.,Singh B.B.,Kumar K.N.. Intriguing aspects of Asian Summer Monsoon Anticyclone Ozone variability from Microwave Limb Sounder measurements[J],2021,253.
APA	Kumar K.R.,Singh B.B.,&Kumar K.N..(2021).Intriguing aspects of Asian Summer Monsoon Anticyclone Ozone variability from Microwave Limb Sounder measurements.Atmospheric Research,253.
MLA	Kumar K.R.,et al."Intriguing aspects of Asian Summer Monsoon Anticyclone Ozone variability from Microwave Limb Sounder measurements".Atmospheric Research 253(2021).