Lemke, Lindsey; Krause, Jeffrey W; Granskog, Mats A; Assmy, Philipp; Hoppe, Clara Jule Marie; Smith, Alexandra (2024): Seasonal, spatial, and temporal variation of Biogenic silica (bSi) and Lithogenic silica (LSi) during MOSAiC and HAVOC expedition 2019/2020 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.971253
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Abstract:
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.
Keyword(s):
Related to:
Pickering, Rebecca A; Cassarino, Lucie; Hendry, Katharine R; Wang, Xiangli L; Maiti, Kanchan; Krause, Jeffrey W (2020): Using Stable Isotopes to Disentangle Marine Sedimentary Signals in Reactive Silicon Pools. Geophysical Research Letters, 47(15), e2020GL087877, https://doi.org/10.1029/2020GL087877
Varela, Diana E; Brzezinski, Mark A; Beucher, Charlotte P; Jones, Janice L; Giesbrecht, Karina E; Lansard, Bruno; Mucci, Alfonso (2016): Heavy silicon isotopic composition of silicic acid and biogenic silica in Arctic waters over the Beaufort shelf and the Canada Basin. Global Biogeochemical Cycles, 30(6), 804-824, https://doi.org/10.1002/2015GB005277
Project(s):
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AFMOSAiC-1_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS122_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate / MOSAiC
The Research Council of Norway (RCN), grant/award no. 280292: Ridges - Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic OCean
Coverage:
Median Latitude: 84.619481 * Median Longitude: 52.041203 * South-bound Latitude: 79.116314 * West-bound Longitude: -2.611045 * North-bound Latitude: 89.024918 * East-bound Longitude: 126.362183
Date/Time Start: 2019-10-28T01:05:00 * Date/Time End: 2020-09-17T06:25:00
Minimum Elevation: -4424.1 m * Maximum Elevation: -754.2 m
Event(s):
PS122/1_5-3 * Latitude: 85.553402 * Longitude: 126.362183 * Date/Time: 2019-10-28T02:29:00 * Elevation: -4379.5 m * O2A Registry URI: sensor.awi.de * Campaign: PS122/1 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Ice corer (IC) * Comment: temp: be1; salo18: s18; CH4: CH4; HAlO: halo; iso: iso; bromo: bromo; CHLA: eco1a; Prod: eco1b; pigs: eco1c; algae: eco1d; Be2: Be2; DIC/TA: DIC; Be3: be3; Tex: tex; DNA1: eco2a; DNA2: eco2b; RNA: eco2c; PLASTic: PLT; REPository: REP; backup: bac; meio1: meio1
PS122/1_5-78 * Latitude: 85.551309 * Longitude: 126.326096 * Date/Time: 2019-10-28T01:05:00 * Elevation: -4379.2 m * O2A Registry URI: sensor.awi.de * Campaign: PS122/1 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Ice corer (IC) * Comment: temperature: T; 2nd temperature core as measurement were too slow for T: T2; S nutrient isotope: SALO 18; ECO1A: ECO1A; ECO1D: ECO1D; ECO1C: ECO1C; ECO1B: ECO1B; texture: TEX; DIC/TA: DIC; ECO2A: ECO2A; ECO2B: ECO2B; ECO2C: ECO2C; only bottom 10: MEIO; Repository: REP; CT using 9cm rather than 7cm as ice shatters: CT; RHO using 9cm rather than 7cm as ice shatters: RHO
PS122/1_6-34 * Latitude: 85.943718 * Longitude: 120.247440 * Date/Time: 2019-11-04T01:48:00 * Elevation: -4407.3 m * O2A Registry URI: sensor.awi.de * Campaign: PS122/1 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Ice corer (IC) * Comment: FYI, TEMP: temperature, then Be1, 20191104-PS122-1_6-FYI-T; FYI, CH4; FYI, SALO18, 20191104-PS122-1_6-FYI-SALO18, original FloeNavi record: LAT 85.934141 LONG 120.357904; FYI: HALO; FYI, ECO1B: PROD, 20191104-PS122-1_6-FYI-PROD; FYI, ECO1A: CHLA, 20191104-PS122-1_6-FYI-CHLA; FYI, ECO1D: ALGAE, 20191104-PS122-1_6-FYI-ALGAE; FYI, ECO1C: PIGS, 20191104-PS122-1_6-FYI-PIGS; FYI, ISO; FYI, BROMO; FYI, Texture, 20191104-PS122-1_6-FYI-TEX; FYI: ECO2A: DNA1, 20191104-PS122-1_6-FYI-DNA1; FYI, ECO2B: DNA2, 20191104-PS122-1_6-FYI-DNA2; FYI, ECO2C: RNA, 20191104-PS122-1_6-FYI-RNA; MEIO1, bottom 10 cm only, 20191104-PS122-1_6-FYI-MEIOI; FYI, REPository, 20191104-PS122-1_6-FYI-REP; FYI, backup, 20191104-PS122-1_6-FYI-BAC; FYI, DIC, 20191104-PS122-1_6-DIC; MEIO2, bottom 10 cm only, 20191104-PS122-1_6-FYI-MEIO2, original FloeNavi record: LAT 85.937749 LONG 120.264249; FYI, BE2; FYI, BE3, original FloeNavi record: LAT 85.938242 LONG 120.249547; FYI, MethanOX, 20191104-PS122-1_6-FYI-MethOX, original FloeNavi record: LAT 85.938386 LONG 120.245194; FYI, Gypsum, 20191104-PS122-1_6-FYI-GYP, original FloeNavi record: LAT 85.938405 LONG 120.244597
Comment:
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.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Leg Number | Leg | Krause, Jeffrey W | Mosaic leg | ||
| 2 | Event label | Event | Krause, Jeffrey W | |||
| 3 | DATE/TIME | Date/Time | Krause, Jeffrey W | Geocode | ||
| 4 | LATITUDE | Latitude | Krause, Jeffrey W | Geocode | ||
| 5 | LONGITUDE | Longitude | Krause, Jeffrey W | Geocode | ||
| 6 | Device type | Device | Krause, Jeffrey W | Device used for sample collection | ||
| 7 | Device type | Device | Krause, Jeffrey W | Code of device used for sample collection | ||
| 8 | ELEVATION | Elevation | m a.s.l. | Krause, Jeffrey W | Geocode – Inverted bottom depth | |
| 9 | Collector | Collector | Krause, Jeffrey W | Team member ID who collected samples | ||
| 10 | Sample type | Samp type | Krause, Jeffrey W | Type of sample: water or ice | ||
| 11 | Feature | Feature | Krause, Jeffrey W | |||
| 12 | Depth, water, bottom/maximum | Depth water bot | m | Krause, Jeffrey W | Desired depth of CTD | |
| 13 | Depth, water, bottom/maximum | Depth water bot | m | Krause, Jeffrey W | Maximum depth of CTD | |
| 14 | Section | Sect | Krause, Jeffrey W | location of coresection sample | ||
| 15 | DEPTH, ice/snow | Depth ice/snow | m | Krause, Jeffrey W | Geocode – mean | |
| 16 | Core length | Core length | cm | Krause, Jeffrey W | total | |
| 17 | Volume | Vol | ml | Krause, Jeffrey W | Filtered Sea Water added | |
| 18 | Volume | Vol | ml | Krause, Jeffrey W | Total volume of filtered sea water and ice melt volume | |
| 19 | Volume | Vol | ml | Krause, Jeffrey W | Amount of melted ice from ice core | |
| 20 | Volume | Vol | ml | Krause, Jeffrey W | Amount of ice melt per cm of ice core | |
| 21 | Factor | Factor | Krause, Jeffrey W | melt volume factor | ||
| 22 | Sample type | Samp type | Krause, Jeffrey W | What analysis sample was collected for | ||
| 23 | Sample code/label | Sample label | Krause, Jeffrey W | unique label to identify Bsi samples | ||
| 24 | Sample volume | Samp vol | ml | Krause, Jeffrey W | Filtered volume of sample used for bSi - ice samples not corrected for melt volume, see general comment on correction | |
| 25 | Identification | ID | Krause, Jeffrey W | marchem sample ID | ||
| 26 | Identification | ID | Krause, Jeffrey W | sample ID | ||
| 27 | Identification | ID | Krause, Jeffrey W | event ID | ||
| 28 | Identification | ID | Krause, Jeffrey W | collector ID | ||
| 29 | Identification | ID | Krause, Jeffrey W | meltprot ID | ||
| 30 | Comment | Comment | Krause, Jeffrey W | TEAM: ECO: MOSAiC team; HAVOC: HAVOC team | ||
| 31 | Biogenic silica | bSiO2 | µmol/l | Krause, Jeffrey W | ||
| 32 | Biogenic silica, standard error | bSiO2 std e | ± | Krause, Jeffrey W | µmol/l | |
| 33 | Lithogenic silica | LSi | µmol/l | Krause, Jeffrey W |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
17107 data points
Download Data
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