{"xmlId":"73493","NOAAStudyId":"31833","studyName":"Col du Dome, France 70 Year Ice Core Bromine Data","doi":"https://doi.org/10.25921/45w3-wr44","uuid":"ceb6a072-2f16-4163-a2ec-e5b8ef339696","dataPublisher":"NOAA","contactInfo":{"type":"CONTACT INFORMATION","shortName":"DOC/NOAA/NESDIS/NCEI","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","address":"325 Broadway, E/NE31","city":"Boulder","state":"CO","postalCode":"80305-3328","country":"USA","dataCenterUrl":"https://www.ncei.noaa.gov/products/paleoclimatology","email":"paleo@noaa.gov","phone":"828-271-4800","fax":null,"constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site."},"dataType":"ICE CORES","investigators":"Legrand, M.; McConnell, J.R.; Preunkert, S.; Chellman, N.; Arienzo, M.M.","investigatorDetails":[{"firstName":"Michel","lastName":"Legrand","initials":"M.","orcId":"0000-0001-7825-5749"},{"firstName":"Joseph","lastName":"McConnell","initials":"J.R.","orcId":"0000-0001-9051-5240"},{"firstName":"Susanne","lastName":"Preunkert","initials":"S.","orcId":"0000-0002-6039-6049"},{"firstName":"Nathan","lastName":"Chellman","initials":"N.","orcId":"0000-0002-1117-1046"},{"firstName":"Monica","lastName":"Arienzo","initials":"M.M.","orcId":"0000-0003-3444-9810"}],"version":"1.0","funding":[{"fundingAgency":"European Community","fundingGrant":"ENV4-CT97 (ALPCLIM)"},{"fundingAgency":"French National Centre for Scientific Research (CNRS)","fundingGrant":null},{"fundingAgency":"US National Science Foundation","fundingGrant":"1925417"}],"studyNotes":"Ice core bromine data from Col du Dome (CDD), France from 1930 to 2001 CE.","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/31833","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-icecore-31833.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-icecore-31833.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/ice-core","studyCode":null,"scienceKeywords":null,"reconstruction":"N","contributionDate":"2021-03-19","entryId":"noaa-icecore-31833","earliestYearBP":20,"mostRecentYearBP":-51,"earliestYearCE":1930,"mostRecentYearCE":2001,"publication":[{"author":{"name":"M. Legrand, J.R. McConnell, S. Preunkert, N.J. Chellman, M. Arienzo"},"pubYear":2021,"title":"Causes of enhanced bromine levels in Alpine ice cores during the 20th century: Implications for bromine in the free European troposphere","journal":"Journal of Geophysical Research: Atmospheres","volume":null,"edition":"e2020JD034246","issue":null,"pages":null,"reportNumber":null,"citation":"M. Legrand, J.R. McConnell, S. Preunkert, N.J. Chellman, M. Arienzo. 2021. Causes of enhanced bromine levels in Alpine ice cores during the 20th century: Implications for bromine in the free European troposphere. Journal of Geophysical Research: Atmospheres. , e2020JD034246. doi: 10.1029/2020JD034246","type":"publication","identifier":{"type":"doi","id":"10.1029/2020JD034246","url":"http://dx.doi.org/10.1029/2020JD034246"},"abstract":"Total bromine (Br) was investigated in seasonally-resolved alpine ice cores covering the 20th century. Results revealed increased Br concentrations in summer (from 0.7 ng g-1 in the late 1940s to 1.6 ng g-1 in the mid 1970s), followed by a slight decrease to 1.25 ng g-1 during the last decade of the 20th century. In winter, a more moderate increase was observed from prior to 1950 (0.35 ng g-1) to the 1970-2000 period (~0.50 ng g-1). Measurements of lead suggest that ~75% of the bromine increase in summer alpine ice between 1930-1950 and 1965-1985 was from bromine-containing aerosol (PbBrCl) emitted during combustion of leaded gasoline. This contribution decreased to ~27% in 2000 following the large decrease of lead additive content in gasoline used in western Europe. Summer ice bromine concentrations, not related to PbBrCl aerosol (denoted Bry*), increased by 40% from the late 1940s to the 1990-2000 decade. In winter, the contribution of leaded-gasoline aerosol to total bromine levels was weaker than in summer, with the winter bromine trend mainly caused by enhanced Bry* levels (~40%) after 1950. These Bry* variations in glacial ice are discussed in terms of past atmospheric reactive bromine (Bry) changes in the European troposphere including anthropogenic CH3Br emissions and transport from the stratosphere.","pubRank":"1"}],"site":[{"NOAASiteId":"58334","siteName":"Col du Dome glacier","siteCode":null,"mappable":"Y","locationName":"Continent>Europe>Western Europe>France","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["45.84","6.85"]},"properties":{"southernmostLatitude":"45.84","northernmostLatitude":"45.84","westernmostLongitude":"6.85","easternmostLongitude":"6.85","minElevationMeters":"4250","maxElevationMeters":"4250"}},"paleoData":[{"dataTableName":"CDD2021Br","NOAADataTableId":"44399","earliestYear":1930,"mostRecentYear":2001,"timeUnit":"CE","earliestYearBP":20,"mostRecentYearBP":-51,"earliestYearCE":1930,"mostRecentYearCE":2001,"coreLengthMeters":null,"dataTableNotes":null,"species":[],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/icecore/trop/col-du-dome/col-du-dome2021br.txt","urlDescription":"NOAA Template File","linkText":"Col du Dome Ice Core Bromine Data","variables":[{"cvDataType":"ICE CORES","cvWhat":"sampling metadata>notes","cvMaterial":null,"cvError":null,"cvUnit":null,"cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"ice core used","cvFormat":"Character","cvShortName":"core"},{"cvDataType":"ICE CORES","cvWhat":"depth variable>depth>depth at sample end","cvMaterial":null,"cvError":null,"cvUnit":"length unit>meter","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"depth_top_matched_CDM/C10_record(m)","cvFormat":"Numeric","cvShortName":"depth_top"},{"cvDataType":"ICE CORES","cvWhat":"depth variable>depth>depth at sample start","cvMaterial":null,"cvError":null,"cvUnit":"length unit>meter","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"depth_bottom_matched_CDM/C10_record(m)","cvFormat":"Numeric","cvShortName":"depth_bot"},{"cvDataType":"ICE CORES","cvWhat":"age variable>age>ice age at sample end","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>year Common Era","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"TimeCE"},{"cvDataType":"ICE CORES","cvWhat":"chemical composition>element or single-element molecule>bromine","cvMaterial":"hydrologic material>bulk ice","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per billion","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>sampling method>continuous flow analysis","cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"Br"}],"NOAAKeywords":["earth science>paleoclimate>ice core>chemistry"]}]}]}],"reference":{"pastThesaurusSkos":"https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf","pastThesaurusExplorer":"https://www.ncei.noaa.gov/access/paleo-search/cvterms","gcmdKeywordThesaurus":"https://earthdata.nasa.gov/earth-observation-data/find-data/idn/gcmd-keywords"},"dataLicenseDescription":null,"dataLicenseUrl":null}