ca91884e-0452-41f4-a46d-ccdbf243a5fc eng; CAN Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca 2022-04-08T13:01:16 North American Profile of ISO 19115:2003 2009-01-01 https://www.polardata.ca/pdcsearch/PDCSearchDOI.jsp?doi_id=12965 High-resolution survey of marine dimethylsulfide (DMS) in contrasted marine environments of the Canadian Arctic during the 2016 oceanographic ArcticNet/NETCARE campaign 2018-10-31 Levasseur, Maurice Lizotte, Martine Massé, Guillaume Levasseur, M., Lizotte, M. and Massé, G. (2018). High-resolution survey of marine dimethylsulfide (DMS) in contrasted marine environments of the Canadian Arctic during the 2016 oceanographic ArcticNet/NETCARE campaign. Canadian Cryospheric Information Network (CCIN). Unpublished data. The Arctic Ocean in summer is thought to be a nexus of biogenic dimethylsulfide (DMS) production associated, in part, with diversified niches within or bordering dynamic sea-ice where DMS-rich microbial communities may thrive. However, critical uncertainties remain regarding the strength of sources, sinks and efflux of marine DMS in the Arctic. Quantifying contemporary oceanic reservoirs of DMS is pivotal for the prediction and interpretation of future reservoirs of this climate-active compound. While a global DMS database of ca. 50,000 points exists, only 2.5% of these inputs originate from Arctic oceans highlighting the relevance of continued sampling efforts particularly in the context of rapid and conspicuous climate alterations in this part of the Global Ocean. A joint NETCARE-ArcticNet campaign aboard the CCGS Amundsen during July and August 2016 served as the launching platform for the deployment of a high frequency autonomous underway DMS sampling instrument (MIMS – Membrane Inlet Mass Spectrometer). Providing real-time data, the MIMS allowed the detection of surface reservoirs of oceanic DMS at greater spatial and temporal scales than traditional single-sample gas chromatography analysis, in conjunction with measurements of temperature, salinity and fluorescence (water line TSG sensor) Conspicuous alterations in the Arctic Ocean are underway and include reductions in snow cover as well as sea ice extent and thickness, the occurrence of which is linked to profound modifications in light availability in surface waters below the ice and at its margin. How these physical changes will impact the dynamics of bloom-forming micro-organisms and their production of the biogenic climate-active gas dimethylsulfide (DMS) are still unknown. Within both ArcticNet and NETCARE research programs, questions such as : "What are the relative contributions of marginal ice blooms, under ice blooms and melt ponds to the production and sea-air exchanges of DMS?" and “What is the relationship between phytoplankton blooms and DMS production/emission in Arctic waters?” are explored during this 2016 field season. Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca polardata.ca http https://metadata.arice-h2020.eu/geonetwork/srv/api/records/ca91884e-0452-41f4-a46d-ccdbf243a5fc/attachments/map.png Baffin Bay Barrow Strait Chlorophyll Dimethylsulfide (DMS) Ice Ice margin Nares Strait Salinity Temperature Polar Data Catalogue Thesaurus (Canada) 2021-06-02 Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca polardata.ca http https://www.polardata.ca/pdcinput/public/keywordlibrary Baffin Bay, Nares Strait, Kennedy Channel, Kane Basin, Victoria Strait, Lancaster Sound, Barrow Strait, Queen Maud Gulf, Parry Channel (Nunavut, Canada) Terms of Use of the Polar Data Catalogue: https://www.polardata.ca/pdcinput/public/termsofuse eng; CAN environment -98.8 -57.1 66.8 80.7 Time period can be either covered by the content of the dataset or the date when the data has been collected. 2016-07-23 2016-08-19 Summary: Not Applicable Research Program(s): ArcticNet,Other. For further information: maurice.levasseur@bio.ulaval.ca martine.lizotte@qo.ulaval.ca false Digital file 1.0 Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca This metadata was generated from the PDC metadata database at 2021-06-02 Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca