{"NOAAStudyId":"22271","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","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.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2017-06-20","dataPublisher":"NOAA","dataType":"ICE CORES","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/ice-core","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-icecore-22271.xml","doi":null,"earliestYearBP":67,"earliestYearCE":1883,"entryId":"noaa-icecore-22271","funding":[{"fundingAgency":"Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)","fundingGrant":"407888/2013-6"}],"investigators":"Schwanck, F.; Simões, J.C.; Handley, M.; Mayewski, P.A.; Auger, J.D.; Bernardo, R.T.; Aquino, F.E.","mostRecentYearBP":-58,"mostRecentYearCE":2008,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/22271","originalSource":null,"publication":[{"abstract":"The Mount Johns (MJ) ice core (79 55'S; 94 23'W) was drilled near the Pine Island Glacier ice divide on the West Antarctic Ice Sheet during the 2008-2009 austral summer, to a depth of 92.26 m. The upper 45m of the record covers approximately 125 years (1883-2008), showing marked seasonal variability. Trace element concentrations in 2137 samples were determined using inductively coupled plasma mass spectrometry. In this study, we reconstruct mineral dust and sea salt aerosol transport and investigate the influence of climate variables on the elemental concentrations at the MJ site. The ice core record reflects changes in emissions as well as atmospheric circulation and transport processes. Our trajectory analysis shows distinct seasonality, with strong westerly transport in the winter months and secondary northeasterly transport in the summer. During summer months, the trajectories present slow-moving (short) transport and are more locally influenced than in other seasons. Finally, our reanalysis correlations with trace element suggest that marine-derived trace element concentrations are strongly influenced by sea ice concentration and sea surface temperature anomalies. The results show that seasonal elemental concentration maxima in sea salt elements correlate well with the sea ice concentration winter maxima in the west Amundsen and Ross seas. Lastly, we observed an increased concentration of marine aerosols when sea surface temperature decreased.","author":{"name":"Franciele Schwanck, Jefferson C. Simões, Michael Handley, Paul A. Mayewski, Jeffrey D. Auger, Ronaldo T. Bernardo, and Francisco E. Aquino"},"citation":"Franciele Schwanck, Jefferson C. Simões, Michael Handley, Paul A. Mayewski, Jeffrey D. Auger, Ronaldo T. Bernardo, and Francisco E. Aquino. 2016. A 125-year record of climate and chemistry variability at the Pine Island Glacier ice divide, Antarctica. The Cryosphere, 11. doi: 10.5194/tc-11-1-2017","edition":null,"identifier":{"id":"10.5194/tc-11-1-2017","type":"doi","url":"http://dx.doi.org/10.5194/tc-11-1-2017"},"issue":null,"journal":"The Cryosphere","pages":null,"pubRank":"1","pubYear":2016,"reportNumber":null,"title":"A 125-year record of climate and chemistry variability at the Pine Island Glacier ice divide, Antarctica","type":"publication","volume":"11"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"57254","geo":{"geoType":"Feature","geometry":{"coordinates":["-79.9167","-94.3833"],"type":"POINT"},"properties":{"easternmostLongitude":"-94.3833","maxElevationMeters":"2100","minElevationMeters":"2100","northernmostLatitude":"-79.9167","southernmostLatitude":"-79.9167","westernmostLongitude":"-94.3833"}},"locationName":"Continent>Antarctica","mappable":"Y","paleoData":[{"NOAADataTableId":"33365","coreLengthMeters":91,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>chemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/mtjohns/mtjohns2017elem.txt","linkText":"Mount Johns Ice Core Trace Element Data ","urlDescription":"Formatted Text Data File","variables":[{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"mean concentration","cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"inductively-coupled plasma field sector mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"microgram per liter","cvWhat":"chemical composition>element or single-element molecule>aluminum"},{"cvAdditionalInfo":"mean concentration","cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"inductively-coupled plasma field sector mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"nanogram per liter","cvWhat":"chemical composition>element or single-element molecule>barium"},{"cvAdditionalInfo":"mean concentration","cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"inductively-coupled plasma field sector mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"microgram per liter","cvWhat":"chemical composition>element or single-element molecule>calcium"},{"cvAdditionalInfo":"mean concentration","cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"inductively-coupled plasma field sector mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"microgram per liter","cvWhat":"chemical composition>element or single-element molecule>iron"},{"cvAdditionalInfo":"mean concentration","cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"inductively-coupled plasma field sector mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"microgram per liter","cvWhat":"chemical composition>element or single-element molecule>potassium"},{"cvAdditionalInfo":"mean concentration","cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"inductively-coupled plasma field sector mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"microgram per liter","cvWhat":"chemical composition>element or single-element molecule>magnesium"},{"cvAdditionalInfo":"mean concentration","cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"inductively-coupled plasma field sector mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"nanogram per liter","cvWhat":"chemical composition>element or single-element molecule>manganese"},{"cvAdditionalInfo":"mean concentration","cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"inductively-coupled plasma field sector mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"microgram per liter","cvWhat":"chemical composition>element or single-element molecule>sodium"},{"cvAdditionalInfo":"mean concentration","cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"inductively-coupled plasma field sector mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"microgram per liter","cvWhat":"chemical composition>element or single-element molecule>sulfur"},{"cvAdditionalInfo":"mean concentration","cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"inductively-coupled plasma field sector mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"nanogram per liter","cvWhat":"chemical composition>element or single-element molecule>strontium"},{"cvAdditionalInfo":"mean concentration","cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"inductively-coupled plasma field sector mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"nanogram per liter","cvWhat":"chemical composition>element or single-element molecule>titanium"}]}],"dataTableName":"MtJohns2017elem","dataTableNotes":null,"earliestYear":1883,"earliestYearBP":67,"earliestYearCE":1883,"mostRecentYear":2008,"mostRecentYearBP":-58,"mostRecentYearCE":2008,"species":[],"timeUnit":"AD"}],"siteName":"Mount Johns"}],"studyCode":null,"studyName":"Mount Johns, Antarctica 125 Year Ice Core Trace Element Data","studyNotes":"Ice core trace element data from Mount Johns, Antarctica, providing a 125-year record of chemistry variability at the Pine Island Glacier.","version":"1.0","xmlId":"20310"}