Seasonal, spatial, and temporal variation of Biogenic silica (bSi) and Lithogenic silica (LSi) during MOSAiC and HAVOC expedition 2019/2020

DOI

Biogenic silica (bSi) and Lithogenic silica (LSi) concentrations from First Year (FYI) and Second Year (SYI) ice cores and water samples were collected with Ice Corer Kovacs Mark II (9-cm) and CTD AWI-OZE (respectively) aboard RV Polarstern during the MOSAiC expedition (Multidisciplinary drifting Observatory for the Study of Arctic Climate) in 2019 to 2020 for projects MOSAiC and "Ridges – Safe HAVens for ice-associated flora and fauna in a seasonally ice-covered Arctic Ocean" (HAVOC). During MOSAiC and HAVOC, there were 95 events with a total of 750 samples for biogenic silica (bSi) and Lithogenic silica (LSi) concentration. Ice samples (once thawed) and water samples were filtered and kept for silica sequential extractions. First, filters went through a mild alkaline-leachable digestion with sodium carbonate (Na2CO3) to free reactive silica associated with the bSi pool. After filters were neutralized and dried, Hydroflouric Acid (HF) was added for a harsh digestion to release LSi.

To account for melt volume factor, multiply "Sample Volume (#24)" with the amount of melted ice from ice core (#19) before using it to normalize the data.For dataset questions, please contact Jeffrey Krause.

Identifier
DOI https://doi.org/10.1594/PANGAEA.971253
Related Identifier References https://doi.org/10.1029/2020GL087877
Related Identifier References https://doi.org/10.1002/2015GB005277
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.971253
Provenance
Creator Lemke, Lindsey ORCID logo; Krause, Jeffrey W ORCID logo; Granskog, Mats A ORCID logo; Assmy, Philipp; Hoppe, Clara Jule Marie ORCID logo; Smith, Alexandra
Publisher PANGAEA
Publication Year 2024
Funding Reference Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven https://doi.org/10.13039/501100003207 Crossref Funder ID AFMOSAiC-1_00 Multidisciplinary drifting Observatory for the Study of Arctic Climate; Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven https://doi.org/10.13039/501100003207 Crossref Funder ID AWI_PS122_00 Multidisciplinary drifting Observatory for the Study of Arctic Climate / MOSAiC; The Research Council of Norway https://doi.org/10.13039/501100005416 Crossref Funder ID 280292 https://prosjektbanken.forskningsradet.no/en/project/FORISS/280292 Ridges - Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic OCean
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 17107 data points
Discipline Earth System Research
Spatial Coverage (-2.611W, 79.116S, 126.362E, 89.025N); Arctic Ocean
Temporal Coverage Begin 2019-10-28T01:05:00Z
Temporal Coverage End 2020-09-17T06:25:00Z