globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2015.06.047
Scopus记录号: 2-s2.0-84949545349
论文题名:
Vertical distribution of ozone over a tropical station: Seasonal variation and comparison with satellite (MLS, SABER) and ERA-Interim products
作者: Akhil Raj S; T; , Venkat Ratnam M; , Narayana Rao D; , Krishna Murthy B; V
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 116
起始页码: 281
结束页码: 292
语种: 英语
英文关键词: HYSPLIT ; MLS ; OMR ; Ozonesonde ; Radiosonde ; SABER
Scopus关键词: Atmospheric boundary layer ; Atmospheric thermodynamics ; Boundary layers ; Clouds ; Meteorological instruments ; Ozone ; Radiosondes ; Tropics ; Troposphere ; HYSPLIT ; MLS ; OMR ; Ozone sondes ; SABER ; Ozone layer ; ozone ; atmospheric chemistry ; comparative study ; ozone ; ozonesonde ; radiosonde ; satellite data ; seasonal variation ; vertical distribution ; altitude ; Article ; atmospheric boundary layer ; boundary layer ; comparative study ; humidity ; oscillation ; ozone layer ; priority journal ; remote sensing ; seasonal variation ; stratosphere ; thermography ; troposphere ; Gadanki ; India ; Tamil Nadu
Scopus学科分类: Environmental Science: Water Science and Technology ; Earth and Planetary Sciences: Earth-Surface Processes ; Environmental Science: Environmental Chemistry
英文摘要: In the present study, vertical distribution of ozone observed using ozonesonde measurements obtained during 2010-2014 from a tropical station Gadanki (13.48°E, 79.18°E) is presented with special emphasis on the variability within the atmospheric boundary layer (ABL), in the free troposphere and in the lower stratosphere. In general, a clear semi-annual oscillation in ozone is seen within ABL and free-troposphere with peak during pre- and post-monsoon seasons. Whereas annual oscillation with peak during monsoon season dominates in the lower stratosphere. Interestingly, there is a delay of one month in the peak in the ozone mixing ratio (OMR) in the free troposphere when compared to the ABL during pre-monsoon and these features are quite different compared to other stations in the Indian region. One of the main objectives of the present study is to examine how well the present satellite (MLS and SABER) and re-analysis (ERA-Interim) ozone data sets represent the variability of ozone over the tropical station. In general, MLS and ERA-Interim overestimate the OMR by 97% and 80%, respectively, near the tropical tropopause, in comparison with ozonesonde data. Thus, caution is to be exercised in using these data sets for investigating the stratosphere-troposphere exchange (STE) process. However, all the three data sets show very good agreement with ozonesonde measurements above 22.5 km. ERA-Interim data set is found to agree well in the free troposphere but not in the ABL. Interestingly, the ozone tropopause is found to be more associated with the convective outflow level than cold point tropopause height. Back trajectory analysis reveals that the observed ozone in the troposphere over Gadanki region is mostly transported from the western region and from the higher altitudes. These features are discussed in the light of current understanding of the generation and transport of the ozone in the troposphere. © 2015 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81325
Appears in Collections:气候变化事实与影响

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作者单位: National Atmospheric Research Laboratory (NARL), Gadanki, India; SRM University, Kattankulathur, India; CEBROSS, III Main, Chennai, India

Recommended Citation:
Akhil Raj S,T,, Venkat Ratnam M,et al. Vertical distribution of ozone over a tropical station: Seasonal variation and comparison with satellite (MLS, SABER) and ERA-Interim products[J]. Atmospheric Environment,2015-01-01,116
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