Temporal trends of emerging pollutant and mercury deposition through ice and sediment core sampling

There is a clear need for air data for mercury and emerging compounds to assess temporal trends and transport pathways. Trends into the future can be effectively captured by continued or new atmospheric monitoring. However, past temporal trends will not be described by this monitoring program, but can be understood through precipitation and deposition records from remote ice caps. The trends captured in ice caps can be compared to known changes in production and emission of these contaminants to better understand long-range transport pathways. Lake sediments are also useful archives for examining past trends in contaminant deposition and delivery, however, lake sediments reflect both direct atmospheric deposition as well as catchment inputs, and are thus also watershed integrators. Analysis of these samples can inform our understanding of the presence of contaminants and their loadings to the Arctic terrestrial and aquatic environment. Furthermore, by utilizing ice and sediment cores in tandem, we will be able to examine the fate of these various contaminants during transport through the watershed as the primary source of water and sediment to Lake Hazen is glacier meltwater. The sediment core data will also provide a valuable link between the ice core data and the Arctic char monitoring data collected at Lake Hazen, allowing for better interpretation of temporal trends in contaminant concentrations measured in fish.

Identifier
Source https://www.polardata.ca/pdcsearch/PDCSearchDOI.jsp?doi_id=12917
Metadata Access http://www.polardata.ca/oai/provider?verb=GetRecord&metadataPrefix=fgdc&identifier=12917_fgdc
Provenance
Creator Young, Cora; Lehnherr, Igor; Criscitiello, Ali; De Silva, Amila; Kirk, Jane
Publisher Canadian Cryospheric Information Network
Contributor Polar Data Catalogue
Publication Year 2020
Rights Research programs, CCIN, or ArcticNet take no liability for the use or transmission of this data
OpenAccess true
Contact cora.young(at)mun.ca; pdc(at)uwaterloo.ca
Representation
Language English
Format Computer file
Discipline Environmental Research
Spatial Coverage (-73.000W, 81.000S, -71.000E, 82.500N)
Temporal Coverage Begin 2017-04-01T00:00:00Z
Temporal Coverage End 2017-05-31T00:00:00Z