Analysis of the origin of the distribution of CO in the subtropical southern Indian Ocean in 2007
dc.contributor.author | Duflot, V. | |
dc.contributor.author | Dils, B. | |
dc.contributor.author | Baray, J.L. | |
dc.contributor.author | De Mazière, M. | |
dc.contributor.author | Attié, J.L. | |
dc.contributor.author | Vanhaelewyn, G. | |
dc.contributor.author | Senten, C. | |
dc.contributor.author | Vigouroux, C. | |
dc.contributor.author | Clain, G. | |
dc.contributor.author | Delmas, R. | |
dc.date | 2010 | |
dc.date.accessioned | 2016-03-31T12:16:17Z | |
dc.date.available | 2016-03-31T12:16:17Z | |
dc.identifier.uri | https://orfeo.belnet.be/handle/internal/3221 | |
dc.description | We show carbon monoxide (CO) distributions at different vertical levels over the subtropical southern Indian Ocean, analyzing an observation campaign using Fourier transform infrared (FTIR) solar absorption spectrometry performed in 2007 at Reunion Island (21°S, 55°E). The CO pollution levels detected by the FTIR measurements during the campaign show a doubling of the CO total columns during the Southern Hemisphere biomass burning season. Using correlative data from the Measurement of Pollution in the Troposphere instrument and back trajectories analyses, we show that the potential primary sources for CO throughout the troposphere in 2007 are southern Africa (June-August) and South America (September-October). A secondary potential contribution from Southeast Asia and Indonesia-Malaysia was identified in the upper troposphere, especially in July and September. We examine the relation between the Asian monsoon anticyclone seasonal cycle and this result. We also investigate the relative contribution of different areas across the globe to the CO concentration in the subtropical southern Indian Ocean in 2007 using backward simulations combining the Lagrangian model FLEXPART 6.2, the Global Fire Emissions Database (GFEDv2.1) and the Emission Database for Global Atmospheric Research (EDGARv3.2-FT2000). We confirm the predominance of the African and South American contributions in the CO concentration in the southern subtropical Indian Ocean below 11 km. We show that CO transported from Australia makes only a small contribution to the total CO concentration observed over Reunion Island, and that the long-range transport of CO coming from Southeast Asia and Indonesia-Malaysia is important, especially from June until September in the upper troposphere. | |
dc.language | eng | |
dc.title | Analysis of the origin of the distribution of CO in the subtropical southern Indian Ocean in 2007 | |
dc.type | Article | |
dc.subject.frascati | Earth and related Environmental sciences | |
dc.audience | Scientific | |
dc.subject.free | Absorption spectroscopy | |
dc.subject.free | Carbon monoxide | |
dc.subject.free | Climatology | |
dc.subject.free | Computer simulation | |
dc.subject.free | Fourier transforms | |
dc.subject.free | Lagrange multipliers | |
dc.subject.free | Pollution detection | |
dc.subject.free | Tropics | |
dc.subject.free | Troposphere | |
dc.subject.free | Asian monsoon | |
dc.subject.free | Atmospheric research | |
dc.subject.free | Australia | |
dc.subject.free | Back trajectories | |
dc.subject.free | Biomass-burning | |
dc.subject.free | CO concentrations | |
dc.subject.free | Fourier transform infrared | |
dc.subject.free | FTIR measurements | |
dc.subject.free | Global fire | |
dc.subject.free | Indian ocean | |
dc.subject.free | Indonesia | |
dc.subject.free | Lagrangian models | |
dc.subject.free | Long range transport | |
dc.subject.free | Malaysia | |
dc.subject.free | Pollution level | |
dc.subject.free | Primary sources | |
dc.subject.free | Relative contribution | |
dc.subject.free | Seasonal cycle | |
dc.subject.free | Solar absorption | |
dc.subject.free | South America | |
dc.subject.free | Southeast Asia | |
dc.subject.free | Southern Hemisphere | |
dc.subject.free | Southern Indian ocean | |
dc.subject.free | Upper troposphere | |
dc.subject.free | Oceanography | |
dc.subject.free | atmospheric pollution | |
dc.subject.free | biomass burning | |
dc.subject.free | carbon monoxide | |
dc.subject.free | database | |
dc.subject.free | FTIR spectroscopy | |
dc.subject.free | pollutant transport | |
dc.subject.free | seasonality | |
dc.subject.free | Southern Hemisphere | |
dc.subject.free | subtropical region | |
dc.subject.free | troposphere | |
dc.subject.free | vertical distribution | |
dc.subject.free | Australia | |
dc.subject.free | Indian Ocean | |
dc.subject.free | Indian Ocean (South) | |
dc.subject.free | Mascarene Islands | |
dc.subject.free | Reunion | |
dc.subject.free | Southeast Asia | |
dc.source.title | Journal of Geophysical Research Atmospheres | |
dc.source.volume | 115 | |
dc.source.issue | 22 | |
dc.source.page | D22106 | |
Orfeo.peerreviewed | Yes | |
dc.identifier.doi | 10.1029/2010JD013994 | |
dc.identifier.scopus | 2-s2.0-78649498973 |