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{"@context":{"@vocab":""},"@id":"","identifier":"","url":"","@type":"Dataset","name":"Dissolved and labile cobalt from the USCGC Healy HLY1502 in the Canada and Makarov Basins of the Arctic Ocean from August to October 2015 (U.S. GEOTRACES Arctic project)","alternateName":"GN01 Dissolved and Labile Cobalt","description":"\u003Cp\u003EDissolved and labile cobalt from the US GEOTRACES Arctic cruise, HLY1502.\u003C/p\u003E\r\n","datePublished":"2018-01-05","keywords":"oceans","creator":[{"@type":"Person","@id":"","name":"Mak A. Saito","url":"","identifier":{"@id":"","@type":"PropertyValue","propertyID":"","value":"orcid:0000-0001-6040-9295","url":""}}],"version":"05 January 2018","license":["",""],"spatialCoverage":{"@type":"Place","geo":{"@type":"GeoShape","box":"60.165 -179.8082 89.995 179.5926","polygon":"60.165,-179.8082 89.995,-179.8082 89.995,179.5926 60.165,179.5926 60.165,-179.8082"},"additionalProperty":[{"@type":"PropertyValue","additionalType":"","propertyID":"SRS","name":"Spatial Reference System","value":""},{"@type":"PropertyValue","additionalType":"","propertyID":"WKT","name":"Well-Known Text","value":"POLYGON ((-179.8082 60.165, 179.5926 60.165, 179.5926 89.995, -179.8082 89.995, -179.8082 60.165))"}]},"publisher":{"@id":"","@type":"Organization","name":"Biological and Chemical Data Management Office","alternateName":"BCO-DMO","identifier":"","url":"","sameAs":""},"provider":{"@id":""},"producer":[{"@type":"ResearchProject","@id":"","name":"U.S. Arctic GEOTRACES Study","alternateName":"U.S. GEOTRACES Arctic","description":"Description from NSF award abstract:\nIn pursuit of its goal \u0022to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions\u0022, in 2015 the International GEOTRACES Program will embark on several years of research in the Arctic Ocean. In a region where climate warming and general environmental change are occurring at amazing speed, research such as this is important for understanding the current state of Arctic Ocean geochemistry and for developing predictive capability as the regional ecosystem continues to warm and influence global oceanic and climatic conditions. The three investigators funded on this award, will manage a large team of U.S.scientists who will compete through the regular NSF proposal process to contribute their own unique expertise in marine trace metal, isotopic, and carbon cycle geochemistry to the U.S. effort. The three managers will be responsible for arranging and overseeing at-sea technical services such as hydrographic measurements, nutrient analyses, and around-the-clock management of on-deck sampling activites upon which all participants depend, and for organizing all pre- and post-cruise technical support and scientific meetings. The management team will also lead educational outreach activities for the general public in Nome and Barrow, Alaska, to explain the significance of the study to these communities and to learn from residents\u0027 insights on observed changes in the marine system. The project itself will provide for the support and training of a number of pre-doctoral students and post-doctoral researchers. Inasmuch as the Arctic Ocean is an epicenter of global climate change, findings of this study are expected to advance present capability to forecast changes in regional and globlal ecosystem and climate system functioning.\nAs the United States\u0027 contribution to the International GEOTRACES Arctic Ocean initiative, this project will be part of an ongoing multi-national effort to further scientific knowledge about trace elements and isotopes in the world ocean. This U.S. expedition will focus on the western Arctic Ocean in the boreal summer of 2015. The scientific team will consist of the management team funded through this award plus a team of scientists from U.S. academic institutions who will have successfully competed for and received NSF funds for specific science projects in time to participate in the final stages of cruise planning. The cruise track segments will include the Bering Strait, Chukchi shelf, and the deep Canada Basin. Several stations will be designated as so-called super stations for intense study of atmospheric aerosols, sea ice, and sediment chemistry as well as water-column processes. In total, the set of coordinated international expeditions will involve the deployment of ice-capable research ships from 6 nations (US, Canada, Germany, Sweden, UK, and Russia) across different parts of the Arctic Ocean, and application of state-of-the-art methods to unravel the complex dynamics of trace metals and isotopes that are important as oceanographic and biogeochemical tracers in the sea.\n","url":""},{"@type":"ResearchProject","@id":"","name":"Collaborative Research: GEOTRACES Arctic Section: Marine Cycling of Bioactive Trace Metals in the Arctic Ocean","alternateName":"GEOTRACES Arctic Bioactive Trace Metals","description":"NSF Award Abstract:\nIn this project, a group of investigators participating in the 2015 U.S.GEOTRACES Arctic expedition will study the chemistry and regional distribution of seven trace metals in the Arctic Ocean: iron, manganese, zinc, cadmium, copper, nickel, and cobalt. These so-called bioactive metals are of special scientific interest because of their role in multiple biogeochemical processes including biological production of the sea and the planetary cycling of carbon and nitrogen. Like other multinational initiatives in the International GEOTRACES Program, the goals of the U.S. Arctic expedition are to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions. This study in particular would contribute to our understanding of the sources and sinks of these seven bioactive metals as well as examine their interaction with biological processes. The project will focus on two major overarching research questions: (1) What are the sources and sinks for micronutrients and macronutrients in the Arctic? And (2) How does bioactive trace element nutrition influence productivity and species composition in the Arctic, and conversely, how do biological processes influence the cycling of these metals? In terms of broader impacts, the PIs on this project will be actively involved in educational outreach efforts, and the research team itself will include two postdoctoral researchers and a graduate student. The team leaders also plan to publish a children\u0027s ocean education book based on the expedition with the aim of generating next-generation excitement about modern ocean science\nWith regard to technical specifics, the research team will measure the dissolved seawater phases of the bioactive metals Fe, Mn, Zn, Cd, Cu, Ni, and Co, the dissolved stable metal isotopes 56Fe, 66Zn, and 114Cd, and the chemical speciation of Co. The recent development of methods for multi-element and multi-isotope analysis methods, in conjunction with the high-resolution sampling of the GEOTRACES program, make it possible to efficiently produce this dense dataset of metals and metal isotopes. This will be a team-based approach to achieve comprehensive duplication for analysis of the key parameters of dissolved metal concentrations. Each investigator will further conduct specialized additional measurements of metal isotopes and dissolved Co (which has unique analytical challenges) and Co speciation. Interpretation of these rich datasets would will be directed toward determination of sources and sinks as well as their ecological stoichiometry, in collaboration with other U.S.GEOTRACES participants measuring synergistic parameters. Together, this Arctic Ocean bioactive trace metal dataset is expected to provide an important contribution to the understanding of micronutrient roles in Arctic biogeochemical processes. These results should also be highly relevant to research studies of the ancient ocean, in which trace-metal analyses are commonly used to trace a wide variety of processes including paleo-ocean circulation and biological productivity. Finally, understanding the sources and sinks for elements in the modern ocean is key to predicting how the concentrations of bioactive elements might vary in a changing future climate.\n","url":""}],"distribution":[{"@type":"DataDownload","contentUrl":"","encodingFormat":"text/tab-separated-values","datePublished":"2018-01-05","creativeWorkStatus":"In Review"}],"subjectOf":[{"@type":"DataDownload","name":"ISO 19115-2 (NOAA Profile)","contentUrl":"","encodingFormat":["","application/xml"],"encodesCreativeWork":"","creativeWorkStatus":"In Review","about":""}],"measurementTechnique":["GO-FLO Bottle","Pump surface","Metrohm 663 VA Stand mercury electrode","Voltammetry Analyzers"],"variableMeasured":[{"@type":"PropertyValue","@id":"","name":"Station number","unitText":"unitless"},{"@type":"PropertyValue","@id":"","name":"Cast number","unitText":"unitless"},{"@type":"PropertyValue","@id":"","name":"Event number","unitText":"unitless"},{"@type":"PropertyValue","@id":"","name":"Unique GEOTRACES sample number","unitText":"unitless"},{"@type":"PropertyValue","@id":"","name":"Sequential sample number within the cast (usually corresponds to bottle number)","unitText":"unitless"},{"@type":"PropertyValue","@id":"","name":"Bottle number; typically 1-24","unitText":"unitless"},{"@type":"PropertyValue","@id":"","name":"Latitude of the event; north is positive.","unitText":"decimal degrees"},{"@type":"PropertyValue","@id":"","name":"Longitude of the event; east is positive.","unitText":"decimal degrees"},{"@type":"PropertyValue","@id":"","name":"Pressure","unitText":"decibars (db)"},{"@type":"PropertyValue","@id":"","name":"Sample depth","unitText":"meters (m)"},{"@type":"PropertyValue","@id":"","name":"Dissolved cobalt","unitText":"picomoles per liter (pmol/L)"},{"@type":"PropertyValue","@id":"","name":"Quality flag for dissolved cobalt. See processing description for more information. Briefly: 1 = good; 2 = not evaluated; 3 = questionable/suspect; 4 = bad; 9 = missing data; 10 = below detection limit.","unitText":"unitless"},{"@type":"PropertyValue","@id":"","name":"Labile cobalt","unitText":"picomoles per liter (pmol/L)"},{"@type":"PropertyValue","@id":"","name":"Quality flag for labile cobalt. See processing description for more information. Briefly: 1 = good; 2 = not evaluated; 3 = questionable/suspect; 4 = bad; 9 = missing data; 10 = below detection limit.","unitText":"unitless"}],"funder":[{"@id":"","@type":"FundingAgency","name":"NSF Division of Ocean Sciences","alternateName":"NSF OCE","identifier":{"@id":"","@type":"PropertyValue","propertyID":"","value":"doi:10.13039/100000141","url":""}}],"about":[{"@id":"","@type":"MonetaryGrant","name":"OCE-1435056","url":"","funder":{"@id":""},"sameAs":"","sponsor":{"@type":"Person","@id":"","name":"Henrietta N Edmonds","url":""}}]}