Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-13881-2018 |
Atmospheric CO and CH4 time series and seasonal variations on Reunion Island from ground-based in situ and FTIR (NDACC and TCCON) measurements | |
Zhou, Minqiang1; Langerock, Bavo1; Vigouroux, Corinne1; Sha, Mahesh Kumar1; Ramonet, Michel2; Delmotte, Marc2; Mahieu, Emmanuel3; Bader, Whitney3; Hermans, Christian1; Kumps, Nicolas1; Metzger, Jean-Marc4; Duflot, Valentin4,5; Wang, Zhiting6,7; Palm, Mathias6; De Maziere, Martine1 | |
2018-10-01 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:19页码:13881-13901 |
文章类型 | Article |
语种 | 英语 |
国家 | Belgium; France; Germany; Peoples R China |
英文摘要 | Atmospheric carbon monoxide (CO) and methane (CH4) mole fractions are measured by ground-based in situ cavity ring-down spectroscopy (CRDS) analyzers and Fourier transform infrared (FTIR) spectrometers at two sites (St Denis and Maido) on Reunion Island (21 degrees S, 55 degrees E) in the Indian Ocean. Currently, the FTIR Bruker IFS 125HR at St Denis records the direct solar spectra in the near-infrared range, contributing to the Total Carbon Column Observing Network (TCCON). The FTIR Bruker IFS 125HR at Maido records the direct solar spectra in the mid-infrared (MIR) range, contributing to the Network for the Detection of Atmospheric Composition Change (NDACC). In order to understand the atmospheric CO and CH4 variability on Reunion Island, the time series and seasonal cycles of CO and CH4 from in situ and FTIR (NDACC and TCCON) measurements are analyzed. Meanwhile, the difference between the in situ and FTIR measurements are discussed. The CO seasonal cycles observed from the in situ measurements at Maldo and FTIR retrievals at both St Denis and Maldo are in good agreement with a peak in September-November, primarily driven by the emissions from biomass burning in Africa and South America. The dry-air column averaged mole fraction of CO (X-CO) derived from the FTIR MIR spectra (NDACC) is about 15.7 ppb larger than the CO mole fraction near the surface at Maido, because the air in the lower troposphere mainly comes from the Indian Ocean while the air in the middle and upper troposphere mainly comes from Africa and South America. The trend for CO on Reunion Island is unclear during the 2011-2017 period, and more data need to be collected to get a robust result. A very good agreement is observed in the tropospheric and stratospheric CH4 seasonal cycles between FTIR (NDACC and TCCON) measurements, and in situ and the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) satellite measurements, respectively. In the troposphere, the CH4 mole fraction is high in August-September and low in December-January, which is due to the OH seasonal variation. In the stratosphere, the CH4 mole fraction has its maximum in March-April and its minimum in August-October, which is dominated by vertical transport. In addition, the different CH4 mole fractions between the in situ, NDACC and TCCON CH4 measurements in the troposphere are discussed, and all measurements are in good agreement with the GEOS-Chem model simulation. The trend of X-CH4 is 7.6 +/- 0.4 ppb yr(-1) from the TCCON measurements over the 2011 to 2017 time period, which is consistent with the CH4 trend of 7.4 +/- 0.5 ppb yr(-1) from the in situ measurements for the same time period at St Denis. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000446097000005 |
WOS关键词 | AMERICAN METHANE EMISSIONS ; COLUMN OBSERVING NETWORK ; HIGH-SPATIAL-RESOLUTION ; RANGES 1850-2280 CM(-1) ; LINE-SHAPE PARAMETERS ; CARBON-MONOXIDE ; AVERAGED METHANE ; MOLE FRACTIONS ; TECHNICAL NOTE ; SATELLITE DATA |
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/30894 |
专题 | 地球科学 |
作者单位 | 1.Royal Belgian Inst Space Aeron BIRA IASB, Brussels, Belgium; 2.UMR CEA CNRS UVSQ, LSCE, IPSL, Gif Sur Yvette, France; 3.Univ Liege, Inst Astrophys Geophys, Liege, Belgium; 4.Univ La Reunion, UMS 3365, OSU Reunion, St Denis, Reunion, France; 5.Lab Atmosphere Cyclones LACy, UMR8105, St Denis, Reunion, France; 6.Univ Bremen, Inst Environm Phys, Bremen, Germany; 7.Lanzhou Univ, Coll Atmospher Sci, Lanzhou 730000, Gansu, Peoples R China |
推荐引用方式 GB/T 7714 | Zhou, Minqiang,Langerock, Bavo,Vigouroux, Corinne,et al. Atmospheric CO and CH4 time series and seasonal variations on Reunion Island from ground-based in situ and FTIR (NDACC and TCCON) measurements[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(19):13881-13901. |
APA | Zhou, Minqiang.,Langerock, Bavo.,Vigouroux, Corinne.,Sha, Mahesh Kumar.,Ramonet, Michel.,...&De Maziere, Martine.(2018).Atmospheric CO and CH4 time series and seasonal variations on Reunion Island from ground-based in situ and FTIR (NDACC and TCCON) measurements.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(19),13881-13901. |
MLA | Zhou, Minqiang,et al."Atmospheric CO and CH4 time series and seasonal variations on Reunion Island from ground-based in situ and FTIR (NDACC and TCCON) measurements".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.19(2018):13881-13901. |
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