data from the CESOA Observatory

Federal Geographic Data Committee (FGDC) Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Reference_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: J. Sciare

Publication_Date: 00000000

Title: data from the CESOA Observatory

Edition:

Geospatial_Data_Presentation_Form:

Series_Information:

Series_Name:

Issue_Identification:

Publication_Information:

Publication_Place: Crozet Island

Publisher:

Other_Citation_Details:

Online_Linkage: http://www-lgge.obs.ujf-grenoble.fr/CESOA/

Description:

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).

Purpose:

Not Available

Supplemental_Information:

REFERENCE: 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.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20041209

Ending_Date: 20060307

Currentness_Reference:Unknown

Status:

Progress: In Work

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: 51.0

East_Bounding_Coordinate: 51.0

North_Bounding_Coordinate: -46.0

South_Bounding_Coordinate: -46.0

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS

Theme_Keyword_Thesaurus: GCMD PLATFORM

Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS

Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY

Theme_Keyword_Thesaurus: DATA SET LANGUAGE

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > SULFATE PARTICLES > ATMOSPHERIC SULFATE CONCENTRATIONS IN AEROSOLS AT CROZET ISLAND

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > ATMOSPHERIC SULFATE, METHANE SULFONIC ACID, SEA-SALT CONCENTRATIONS IN AEROSOLS

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > SULFUR COMPOUNDS > TROPOSPHERIC METHANE SULFONIC ACID AND SULFATE AEROSOL CONCENTRATIONS AT CROZET

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > SULFUR COMPOUNDS > SULFATE > ATMOSPHERIC SULFATE CONCENTRATIONS IN AEROSOLS AT CROZET ISLAND

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > SULFUR COMPOUNDS > SULFATE

Theme_Keyword: GROUND STATIONS

Theme_Keyword: Sulfur Compounds

Theme_Keyword: Sea-salt

Theme_Keyword: Methane Sulfonique Acid

Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Theme_Keyword: ENGLISH

Place:

Place_Keyword_Thesaurus: GCMD

Place_Keyword: OCEAN > INDIAN OCEAN

Place_Keyword: GEOGRAPHIC REGION > POLAR

Place_Keyword: OCEAN > INDIAN OCEAN > CROZET ISLANDS

Place_Keyword: OCEAN > INDIAN OCEAN > CROZET ISLANDS > ILE DE LA POSSESSION, BASE ALFRED FAURE > ILE DE LA POSSESSION, BASE ALFRED FAURE

Temporal:

Temporal_Keyword_Thesaurus: GCMD

Temporal_Keyword: Daily

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.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: JEAN SCIARE

Contact_Position: TECHNICAL CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address

Address: LSCE

Address: Bat 702, Pce 11

Address: CEA Orme les Merisiers

City: Gif sur Yvette

Postal_Code: 91191

Country: France

Contact_Voice_Telephone: +33 1 69 08 77 16

Contact_Electronic_Mail_Address: jean.sciare@lsce.ipsl.fr

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

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

Logical_Consistency_Report:

Not Available

Completeness_Report:

Not Available

Lineage:

Process_Step:

Process_Description:

Not Available

Process_Date: Unknown

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 46°S

Longitude_Resolution: 51°E

Geographic_Coordinate_Units: Decimal degrees

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: Not Available

Altitude_Resolution: ground base measurements

Altitude_Distance_Units: Not Available

Altitude_Encoding_Method: Implicit coordinate

Depth_System_Definition:

Depth_Datum_Name: Not Available

Depth_Resolution: ground base measurements

Depth_Distance_Units: Not Available

Depth_Encoding_Method: Implicit coordinate

Distribution_Information:

Resource_Description: 414_2_IPEV_FR

Distribution_Liability:

Not Available

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: CSV > Comma-separated values

Transfer_Size: 15 Ko uncompressed

Digital_Transfer_Option:

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://www-lgge.obs.ujf-grenoble.fr/CESOA/

Access_Instructions:

Public information for CESOA Observatory. Description of sampling and analytical methods. Access to the ftp data site.

Fees: Free

Metadata_Reference_Information:

Metadata_Date: 20090804

Metadata_Review_Date: 20120131

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: BRUNO JOURDAIN

Contact_Position: DIF AUTHOR

Contact_Address:

Address_Type: Mailing and Physical Address

Address: LGGE

Address: 54 rue Moliere

City: Saint Martin d'Heres

Postal_Code: 38400

Country: France

Contact_Voice_Telephone: +33 4 76 82 42 07

Contact_Electronic_Mail_Address: cesoa@lgge.obs.ujf-grenoble.fr

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time