Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-8549-2018 |
Reactive bromine in the low troposphere of Antarctica: estimations at two research sites | |
Prados-Roman, Cristina1; Gomez-Martin, Laura1,2; Puentedura, Olga1; Navarro-Comas, Monica1; Iglesias, Javier1; Ramon de Mingo, Jose3; Perez, Manuel7; Ochoa, Hector4; Elena Barlasina, Maria5; Carbajal, Gerardo5,6; Yela, Margarita1 | |
2018-06-18 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:12页码:8549-8570 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; France; Argentina |
英文摘要 | For decades, reactive halogen species (RHSs) have been the subject of detailed scientific research due to their influence on the oxidizing capacity of the atmosphere and on the climate. From the RHSs, those containing bromine are of particular interest in the polar troposphere as a result of their link to ozone-depletion events (ODEs) and to the perturbation of the cycle of toxic mercury, for example. Given its remoteness and related limited accessibility compared to the Arctic region, the RHSs in the Antarctic troposphere are still poorly characterized. This work presents ground-based observations of tropospheric BrO from two different Antarctic locations: Marambio Base (64 degrees 13' S, 56 degrees 37' W) and Belgrano II Base (77 degrees 52' S, 34 degrees 7' W) during the sunlit period of 2015. By means of MAX-DOAS (Multi-axis Differential Optical Absorption Spectroscopy) measurements of BrO performed from the two research sites, the seasonal variation in this reactive trace gas is described along with its vertical and geographical distribution in the Antarctic environment. Results show an overall vertical profile of BrO mixing ratio decreasing with altitude, with a median value of 1.6 pmol mol(-1) in the lowest layers of the troposphere. Additionally, observations show that the polar sunrise triggers a geographical heterogeneous increase in bromine content in the Antarctic troposphere yielding a maximum BrO at Marambio (26 pmol mol(-1)), amounting to 3-fold the values observed at Belgrano at dawn. Data presented herein are combined with previous studies and ancillary data to update and expand our knowledge of the geographical and vertical distribution of BrO in the Antarctic troposphere, revealing Marambio as one of the locations with the highest BrO reported so far in Antarctica. Furthermore, the observations gathered during 2015 serve as a proxy to investigate the budget of reactive bromine (BrOx = Br + BrO) and the bromine-mediated ozone loss rate in the Antarctic troposphere. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000435484300005 |
WOS关键词 | ABSORPTION CROSS-SECTIONS ; OZONE DEPLETION EVENTS ; BOUNDARY-LAYER HALOGENS ; SURFACE OZONE ; MAX-DOAS ; VERTICAL-DISTRIBUTION ; TEMPERATURE-DEPENDENCE ; ATMOSPHERIC CHEMISTRY ; CATALYZED DESTRUCTION ; BRO CONCENTRATIONS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/17255 |
专题 | 地球科学 |
作者单位 | 1.Natl Inst Aerosp Technol INTA, Atmospher Res & Instrumentat Branch, Madrid 28850, Spain; 2.UFR Sci Exactes & Nat, Grp Spectrometrie Mol & Atmospher, URM CNRS 7331, Moulin Housse,BP 1039, F-51687 Reims 2, France; 3.Natl Inst Aerosp Technol INTA, Space Sensors Engn, Madrid 28850, Spain; 4.Argentinian Antarctic Inst IAA, Natl Antarctic Direct DNA, 25 Mayo 1143, San Martin, Buenos Aires, Argentina; 5.Atmospher Watch & Geophys GIDyC VAYGEO, Natl Meteorol Serv SMN, Buenos Aires, DF, Argentina; 6.Pontificia Univ Catolica Argentina, PEPACG, Fac Ingn & Ciencias Agr, Buenos Aires, DF, Argentina; 7.Natl Inst Aerosp Technol INTA, Atmospher Res & Instrumentat Branch, Madrid 28850, Spain |
推荐引用方式 GB/T 7714 | Prados-Roman, Cristina,Gomez-Martin, Laura,Puentedura, Olga,et al. Reactive bromine in the low troposphere of Antarctica: estimations at two research sites[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(12):8549-8570. |
APA | Prados-Roman, Cristina.,Gomez-Martin, Laura.,Puentedura, Olga.,Navarro-Comas, Monica.,Iglesias, Javier.,...&Yela, Margarita.(2018).Reactive bromine in the low troposphere of Antarctica: estimations at two research sites.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(12),8549-8570. |
MLA | Prados-Roman, Cristina,et al."Reactive bromine in the low troposphere of Antarctica: estimations at two research sites".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.12(2018):8549-8570. |
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