Concentration of aerosols in the southern atmosphere (Crozet Island)
Entry ID: 414_2_IPEV_FR

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Summary
Abstract: This program is dedicated to the study of key atmospheric species present in the lower troposphere at mid and high southern latitudes, these regions being still undisturbed by human activities. The present lack of atmospheric data in these regions, where it is still possible to examine the natural variability of the chemical composition of the atmosphere and its complexity, motivates this study. For instance, the project is focused on gaseous DMS emitted by the marine biota which by oxidation produces fine sulfur particles able to intercept solar radiations and thus to force the climate. Reversely, climatic conditions influence the state of the marine biota and a negative feedback would take place in response to the global warming.

This study is carried out by trapping gases and particles present in the atmosphere, some analysis such as the DMS one being necessary done at the site. Sampling of seawater during ship traverses and offshore stations are analyzed for DMSP to gain a better understanding of the oceanic source (satellite data being not always sufficient). Furthermore, a study of atmospheric oxidants who convert DMS into fine sulfur particles is carried out. These studies are achieved at DDU, Amsterdam and Crozet to provide a global view on mid and high latitude of the Austral Ocean. The observed interannual variations of the atmospheric chemistry are then compared to various environmental data (ocean colour, sea ice extend, state of the ozone layer, meteorological parameters) in view to understand the cause of their temporal variations. Such long term year-round data set will also permit to detect in the future a possible retroaction of the natural environment of this region to global climate change. Furthermore, such studies are stimulated by the study of glacier archives which open the possibility to reconstruct the past composition of the atmosphere, as far as the relation linking the composition of air and that of snow is enough known. Finally such king of studies has also recently been set up at the new over winter station located at 3000 asl on the high Antarctic plateau (Dome Concordia).

Related URL
Link: VIEW PROJECT HOME PAGE
Description: Public information for CESOA Observatory. Description of sampling and analytical methods. Access to the ftp data site.


Geographic Coverage
 N: -46.0 S: -46.0  E: 51.0  W: 51.0

Data Set Citation
Dataset Originator/Creator: J. Sciare
Dataset Title: data from the CESOA Observatory
Dataset Release Date: 0000-00-00
Dataset Release Place: Crozet Island
Online Resource: http://www-lgge.obs.ujf-grenoble.fr/CESOA/


Temporal Coverage
Start Date: 2004-12-09
Stop Date: 2006-03-07


Location Keywords
OCEAN > INDIAN OCEAN
GEOGRAPHIC REGION > POLAR
OCEAN > INDIAN OCEAN > CROZET ISLANDS
OCEAN > INDIAN OCEAN > CROZET ISLANDS > ILE DE LA POSSESSION, BASE ALFRED FAURE > Ile de la Possession, base Alfred Faure


Data Resolution
Latitude Resolution: 46°S
Longitude Resolution: 51°E
Vertical Resolution: ground base measurements
Temporal Resolution: daily


Science Keywords
ATMOSPHERE >AEROSOLS >SULFATE PARTICLES >ATMOSPHERIC SULFATE CONCENTRATIONS IN AEROSOLS AT CROZET ISLAND    [Definition]
ATMOSPHERE >AEROSOLS >ATMOSPHERIC SULFATE, METHANE SULFONIC ACID, SEA-SALT CONCENTRATIONS IN AEROSOLS    [Definition]
ATMOSPHERE >AEROSOLS    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >SULFUR COMPOUNDS >TROPOSPHERIC METHANE SULFONIC ACID AND SULFATE AEROSOL CONCENTRATIONS AT CROZET    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >SULFUR COMPOUNDS >SULFATE >ATMOSPHERIC SULFATE CONCENTRATIONS IN AEROSOLS AT CROZET ISLAND    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >SULFUR COMPOUNDS >SULFATE    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Platform
GROUND STATIONS    [Information]


Quality
Details concerning the used protocols are given on the CESOA web site (http://www-
lgge.obs.ujf-grenoble.fr/CESOA/)


Access Constraints
Login and Password required to access the data. Contact cesoa@lgge.obs.ujf-grenoble.fr


Use Constraints
Please cite data provider: "data from CESOA Observatory - J. Sciare, available at
http://www-lgge.obs.ujf-grenoble.fr/CESOA/"

Please send a copy or pdf file of any publication using CESOA data to the investigator.


Keywords
Sulfur compounds
Sea-salt
Methane sulfonique acid


Data Set Progress
IN WORK


Data Center
Laboratoire de Glaciologie et Géophysique de l'Environnement, Centre National de la Recherche Scientifique, France    [Information]
Data Center URL: http://lgge.osug.fr

Data Center Personnel
Name: LABORATOIRE DE GLACIOLOGIE ET GÉOPHYSIQUE DE L’ENVIRONNEMENT (LGGE) CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)
Phone: +33 4 76 82 42 00
Fax: +33 4 76 82 42 01
Email: ontact at lgge.obs.ujf-grenoble.fr
Contact Address:
54, rue Molière
City: BP 96
Province or State: Saint-Martin d’Hères cedex
Postal Code: F-38402
Country: France



Distribution
Distribution_Media: ELECTRONIC MEDIA > Online FTP
Distribution_Size: 15 Ko uncompressed
Distribution_Format: CSV > Comma-separated values
Fees: Free


Personnel
MICHEL LEGRAND
Role: INVESTIGATOR
Email: legrand at lgge.obs.ujf-grenoble.fr
Contact Address:
LGGE
54 rue Moliere
City: Saint Martin d'Heres
Postal Code: 38400
Country: France


BRUNO JOURDAIN
Role: DIF AUTHOR
Phone: +33 4 76 82 42 07
Email: cesoa at lgge.obs.ujf-grenoble.fr
Contact Address:
LGGE
54 rue Moliere
City: Saint Martin d'Heres
Postal Code: 38400
Country: France


JEAN SCIARE
Role: TECHNICAL CONTACT
Phone: +33 1 69 08 77 16
Email: jean.sciare at lsce.ipsl.fr
Contact Address:
LSCE
Bat 702, Pce 11
CEA Orme les Merisiers
City: Gif sur Yvette
Postal Code: 91191
Country: France


Publications/References
Nguyen, B.C., Mihalopoulos, N., and Belviso, S., Seasonal variation of atmospheric dimethylsulfide at Amsterdam island in the southern Indian Ocean, J. Atmos. Chem., 11, 123-143, 1990

Nguyen, B.C., N. Mihalopoulos, J.P. Putaud, A. Gaudry, L. Gallet, Covariations in Oceanic Dimethylsulfide, its Oxidation Products and Rain Acidity at Amsterdam Island in the Southern Indian Ocean, J. Atmos. Chem., 15, 39-53, 1992.

Putaud, J.P., N. Mihalopoulos, B.C., Nguyen, J.M. Campin, and S. Belviso, Seasonal Variations of Atmospheric Sulfur dioxide and dimethylsulfide concentrations at Amsterdam Island in the Southern Indian Ocean, J. Atmos Chem., 15, 117-131, 1992

Mihalopoulos, N., Putaud J.P., and Nguyen B.C.: Seasonal variation of methanesulfonic acid in precipitation at Amsterdam island in the southern Indian ocean. Atmos. Environ., 27A, 1909-1916,1993

Sciare, J., E. Baboukas, R. Hancy, N. Mihalopoulos, and B.C. Nguyen, Seasonal variation of dimethylsulfoxide in rainwater at Amsterdam Island in the Southern Ocean: implications on the biogenic sulfur cycle. J. Atmos. Chem., 30, 229-240, 1998.

Sciare, J., N. Mihalopoulos, and B. Nguyen, Summertime seawater concentrations of dimethylsulfide in the western Indian Ocean: Reconciliation of fluxes and spatial variability with long-term atmospheric observations. J. Atmos. Chem., 32, 357-373, 1999.

Sciare J. et Mihalopoulos N., A new technique for sampling and analysis of atmospheric dimethylsulfoxide (DMSO), Atmos. Environ., 34, pages 151-156, 2000a.

Sciare J., Mihalopoulos N. et Dentener F.J., Interannual variability of atmospheric dimethylsulfide in the southern Indian Ocean, J. Geophys. Res., 105 (D21), 26369-26377, 2000b.

Sciare J., Kanakidou M. et Mihalopoulos N., Diurnal and seasonal variation of atmospheric dimethylsulfoxide (DMSO) at Amsterdam Island in the southern Indian Ocean, J. Geophys. Res., 105, pages 17257-17266, 2000c.

Sciare, J., N. Mihalopoulos, and E. Baboukas, 2000. Short-term variations of dimethylsulfide and its oxidation products at Amsterdam Island during summer time. J. Atmos. Chem., 39, 281-302, 2001

Baboukas. E, Sciare J. and Mihalopoulos N., 2002, Interannual variability of methanesulfonic acid in rainwaters at Amsterdam Island, Atmos. Environ., 36, 5131-5139.

Kniveton D.R., Todd M.C., Sciare J., and Mihalopoulos N., 2003, Variability of atmospheric dimethylsulphide over the southern Indian Ocean due to changes in ultraviolet radiation, Global Biogeochemical Cycles, 17(4), 1096.

Baboukas, E., Sciare J., and Mihalopoulos N., 2004, Spatial, temporal and Interannual variability of methanesulfonate and non-sea-salt sulfate in rainwater in the Southern Indian Ocean, J. Atmos. Chem., 48, 35-57.

Creation and Review Dates
DIF Creation Date: 2009-08-04
Last DIF Revision Date: 2013-12-04

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