Dissolved and Particulate Trace Elements in Late Summer Arctic Melt Ponds
Melt ponds are a prominent feature of Arctic sea ice during the summer and play a role in the complex interface between the atmosphere, cryosphere and surface ocean. During melt pond formation and development, micronutrient and contaminant trace elements (TEs) from seasonally accumulated atmospheric...
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Online Access: | https://aquila.usm.edu/fac_pubs/15420 https://doi.org/10.1016/j.marchem.2018.06.002 |
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ftsouthmissispun:oai:aquila.usm.edu:fac_pubs-16743 2023-09-05T13:16:40+02:00 Dissolved and Particulate Trace Elements in Late Summer Arctic Melt Ponds Marsay, Chris M. Aguilar-Islas, Ana Fitzsimmons, Jessica N. Hatta, Mariko Jensen, Laramie T. John, Seth G. Kadko, David Landing, William M. Lanning, Nathan T. Morton, Peter L. Pasqualini, Angelica Rauschenberg, Sara Sherrell, Robert M. Shiller, Alan M. Twining, Benjamin S. Whitmore, Laura M. Zhang, Ruifeng Buck, Clifton S. 2018-08-20T07:00:00Z https://aquila.usm.edu/fac_pubs/15420 https://doi.org/10.1016/j.marchem.2018.06.002 unknown The Aquila Digital Community https://aquila.usm.edu/fac_pubs/15420 https://doi.org/10.1016/j.marchem.2018.06.002 Faculty Publications trace elements biogeochemistry melt ponds Arctic Ocean GEOTRACES Oceanography and Atmospheric Sciences and Meteorology Physical Sciences and Mathematics text 2018 ftsouthmissispun https://doi.org/10.1016/j.marchem.2018.06.002 2023-08-20T16:45:36Z Melt ponds are a prominent feature of Arctic sea ice during the summer and play a role in the complex interface between the atmosphere, cryosphere and surface ocean. During melt pond formation and development, micronutrient and contaminant trace elements (TEs) from seasonally accumulated atmospheric deposition are mixed with entrained sedimentary and marine-derived material before being released to the surface ocean during sea ice melting. Here we present particulate and size-fractionated dissolved (truly soluble and colloidal) TE data from five melt ponds sampled in late summer 2015, during the US Arctic GEOTRACES (GN01) cruise. Analyses of salinity, δ18O, and 7Be indicate variable contributions to the melt ponds from snowmelt, melting sea ice, and surface seawater. Our data highlight the complex TE biogeochemistry of late summer Arctic melt ponds and the variable importance of different sources for specific TEs. Dissolved TE concentrations indicate a strong influence from seawater intrusion for V, Ni, Cu, Cd, and Ba. Ultrafiltration methods reveal dissolved Fe, Zn, and Pb to be mostly colloidal (0.003–0.2 μm), while Mn, Co, Ni, Cu, and Cd are dominated by a truly soluble (aerosols and/or sedimentary material, with significant enrichments for some elements, including Ni, Cu, Zn, Cd and Pb, that may result from anthropogenic aerosols, biogenic material, and/or in situ scavenging of dissolved TEs. Our results indicate that melt ponds represent a transitional environment in which some atmospherically-derived TEs undergo physical and/or chemical changes before their release to the surface ocean. As a result, the ongoing changes in sea ice areal extent, thickness, and melt season length are likely to influence the bioavailability of atmospheric TE input to the surface Arctic Ocean, with material released from snow and sea ice via melt ponds earlier in the summer and with more extensive direct deposition to the ocean surface. Text Arctic Arctic Ocean Sea ice The University of Southern Mississippi: The Aquila Digital Community Arctic Arctic Ocean Marine Chemistry 204 70 85 |
institution |
Open Polar |
collection |
The University of Southern Mississippi: The Aquila Digital Community |
op_collection_id |
ftsouthmissispun |
language |
unknown |
topic |
trace elements biogeochemistry melt ponds Arctic Ocean GEOTRACES Oceanography and Atmospheric Sciences and Meteorology Physical Sciences and Mathematics |
spellingShingle |
trace elements biogeochemistry melt ponds Arctic Ocean GEOTRACES Oceanography and Atmospheric Sciences and Meteorology Physical Sciences and Mathematics Marsay, Chris M. Aguilar-Islas, Ana Fitzsimmons, Jessica N. Hatta, Mariko Jensen, Laramie T. John, Seth G. Kadko, David Landing, William M. Lanning, Nathan T. Morton, Peter L. Pasqualini, Angelica Rauschenberg, Sara Sherrell, Robert M. Shiller, Alan M. Twining, Benjamin S. Whitmore, Laura M. Zhang, Ruifeng Buck, Clifton S. Dissolved and Particulate Trace Elements in Late Summer Arctic Melt Ponds |
topic_facet |
trace elements biogeochemistry melt ponds Arctic Ocean GEOTRACES Oceanography and Atmospheric Sciences and Meteorology Physical Sciences and Mathematics |
description |
Melt ponds are a prominent feature of Arctic sea ice during the summer and play a role in the complex interface between the atmosphere, cryosphere and surface ocean. During melt pond formation and development, micronutrient and contaminant trace elements (TEs) from seasonally accumulated atmospheric deposition are mixed with entrained sedimentary and marine-derived material before being released to the surface ocean during sea ice melting. Here we present particulate and size-fractionated dissolved (truly soluble and colloidal) TE data from five melt ponds sampled in late summer 2015, during the US Arctic GEOTRACES (GN01) cruise. Analyses of salinity, δ18O, and 7Be indicate variable contributions to the melt ponds from snowmelt, melting sea ice, and surface seawater. Our data highlight the complex TE biogeochemistry of late summer Arctic melt ponds and the variable importance of different sources for specific TEs. Dissolved TE concentrations indicate a strong influence from seawater intrusion for V, Ni, Cu, Cd, and Ba. Ultrafiltration methods reveal dissolved Fe, Zn, and Pb to be mostly colloidal (0.003–0.2 μm), while Mn, Co, Ni, Cu, and Cd are dominated by a truly soluble (aerosols and/or sedimentary material, with significant enrichments for some elements, including Ni, Cu, Zn, Cd and Pb, that may result from anthropogenic aerosols, biogenic material, and/or in situ scavenging of dissolved TEs. Our results indicate that melt ponds represent a transitional environment in which some atmospherically-derived TEs undergo physical and/or chemical changes before their release to the surface ocean. As a result, the ongoing changes in sea ice areal extent, thickness, and melt season length are likely to influence the bioavailability of atmospheric TE input to the surface Arctic Ocean, with material released from snow and sea ice via melt ponds earlier in the summer and with more extensive direct deposition to the ocean surface. |
format |
Text |
author |
Marsay, Chris M. Aguilar-Islas, Ana Fitzsimmons, Jessica N. Hatta, Mariko Jensen, Laramie T. John, Seth G. Kadko, David Landing, William M. Lanning, Nathan T. Morton, Peter L. Pasqualini, Angelica Rauschenberg, Sara Sherrell, Robert M. Shiller, Alan M. Twining, Benjamin S. Whitmore, Laura M. Zhang, Ruifeng Buck, Clifton S. |
author_facet |
Marsay, Chris M. Aguilar-Islas, Ana Fitzsimmons, Jessica N. Hatta, Mariko Jensen, Laramie T. John, Seth G. Kadko, David Landing, William M. Lanning, Nathan T. Morton, Peter L. Pasqualini, Angelica Rauschenberg, Sara Sherrell, Robert M. Shiller, Alan M. Twining, Benjamin S. Whitmore, Laura M. Zhang, Ruifeng Buck, Clifton S. |
author_sort |
Marsay, Chris M. |
title |
Dissolved and Particulate Trace Elements in Late Summer Arctic Melt Ponds |
title_short |
Dissolved and Particulate Trace Elements in Late Summer Arctic Melt Ponds |
title_full |
Dissolved and Particulate Trace Elements in Late Summer Arctic Melt Ponds |
title_fullStr |
Dissolved and Particulate Trace Elements in Late Summer Arctic Melt Ponds |
title_full_unstemmed |
Dissolved and Particulate Trace Elements in Late Summer Arctic Melt Ponds |
title_sort |
dissolved and particulate trace elements in late summer arctic melt ponds |
publisher |
The Aquila Digital Community |
publishDate |
2018 |
url |
https://aquila.usm.edu/fac_pubs/15420 https://doi.org/10.1016/j.marchem.2018.06.002 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Ocean Sea ice |
op_source |
Faculty Publications |
op_relation |
https://aquila.usm.edu/fac_pubs/15420 https://doi.org/10.1016/j.marchem.2018.06.002 |
op_doi |
https://doi.org/10.1016/j.marchem.2018.06.002 |
container_title |
Marine Chemistry |
container_volume |
204 |
container_start_page |
70 |
op_container_end_page |
85 |
_version_ |
1776198166184460288 |