cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.936720
title: Table S3, Mass-to-charge ratios (m/z) of precursors and product ions as well as collision energies (CE) of diagnostic transitions during multiple reaction monitoring of heterocyst glycolipids at Quadrupole 1 (Q1) and 3 (Q3)

description: Heterocyst glycolipids (HGs) were analyzed using an Agilent 1290 ultra high-performance liquid chromatograph coupled to an Agilent 6410 triple quadrupole mass spectrometer equipped with an electrospray ionization interface operated in positive mode, following Wörmer et al. (2012).This work was supported by the Gordon and Betty Moore Foundation.
description: Fragmentor voltage was 85 and accelerator voltage was 7 for all experiments
DOI: 10.1594/pangaea.936836
title: Table S6, Biomarker isotopic data of crenarchaeol (δ13C Cren.), bacteriohopanetetrol I (δ13C BHT-I), and bacteriohopanetetrol II (δ13C BHT-II) for ODP cores at sites 964 and 967

description: Stable-carbon isotope compositions for crenarchaeol, bacteriohopanetetrol I (BHT-I), and bacteriohopanetetrol II (BHT-II) for ODP cores at sites 964 and 967. All biomarkers were measured using a Thermo Scientific Delta V isotope ratio mass spectrometer at least in triplicate. For BHT-I and BHT-II, compounds were isolated using high-performance preparative liquid chromatography and individually analyzed by high-temperature gas-chromatography-IRMS following Hemingway et al. (2018). Crenarchaeol was isolated using high-pressure preparative chromatography and analyzed using a spooling-wire microcombustion interface on a Thermo Scientific Delta V isotope ratio mass spectrometer at least in quintuplicate following Polik et al. (2018).This work was supported by the Gordon and Betty Moore Foundation.
description: Carbon stable isotopic composition of crenarchaeol (δ13C Cren.), bacteriohopanetetrol I (δ13C BHT-I), and bacteriohopanetetrol II (δ13C BHT-II). F2/F1 size ratio describes the crenarchaeol-carbon to background-carbon ratio as an indicator of potential bias δ13C Cren by high background. Values above 2 indicate unbiased samples (Polik et al., 2018). Differences between δ13C Cren, δ13C BHT-I, and δ13C BHT-II are given.
DOI: 10.13130/rd_unimi/n9enq4/w0hcn6
title: nodes_init-182.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.938090
title: Geochronologic and trace element concentrations for zircon dated via CA-TIMS (15 μm spot size)
DOI: 10.13130/rd_unimi/n9enq4/zahimj
title: force_disp_final-177.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.974600
title: Clumped isotopic composition of oxygen in WDC06A ice core 8-18ka

description: Laboratory O2 clumped-isotopic composition data (as Δ36 values) for air occluded in ice core spanning gas ages of 8000-18000 ky BP. O2 clumped isotopic composition data was generated between 2017-2022 at Rice University, Houston, TX, using a Nu Perspective Isotope Ratio Mass Spectrometer (IRMS). Reported data was measured in an Antarctic ice core: West Antarctic Ice Sheet Divide Ice Core (WDC06A) . The chronology and gas ages for the core were obtained from Sigl et al., 2016 (doi:10.5194/cp-12-769-2016) and Buizert et al., 2015 (doi:10.5194/cp-11-153-2015). In addition to O2 clumped isotope data, measured δ18Ο data are also reported. Gas loss corrections to generated Δ36 data are made using previously reported raw δ18O data in Seltzer et al., 2017 (doi:10.5194/cp-13-1323-2017) and established gas loss corrections in Yeung et al., 2012 and Banerjee et al. 2022.
DOI: 10.13130/rd_unimi/n9enq4/gyq1u0
title: force_disp_final-154.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.13130/rd_unimi/n9enq4/qhctfw
title: nodes_init-172.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.977807
title: May-June 2023 California Current Pressure In Situ Gas Instrument (PIGI) Data

description: Continuous underway measurements of dissolved oxygen and nitrogen were collected during the 2023 Phytoplankton UPwelling response cycle (PUPCYCLE) II expedition from May 27 - June 12, 2023 onboard the R/V Sally Ride. The cruise transited between Newport, OR and San Francisco, CA. Seawater was delivered via the ship's underway seawater supply line (intake depth close to 5m) and passed through a custom-built Pressure In Situ Gas Instrument (PIGI). The PIGI contains an oxygen optode (Aanderaa) paired with a gas tension device. Nitrogen concentrations are derived from the difference between total dissolved gas pressure and oxygen pressure measurements.
DOI: 10.13130/rd_unimi/n9enq4/tlqwpl
title: nodes_init-152.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.936717
title: Table S2, Mass-to-charge ratios (m/z) used for selective reaction monitoring of Bacteriohopanepolyols (BHPs) at Quadrupole 1 (Q1) and 3 (Q3)

description: Bacteriohopanepolyols (BHPs) were analyzed using an Agilent 1290 ultra high-performance liquid chromatograph coupled to an Agilent 6410 triple quadrupole mass spectrometer equipped with an atmospheric chemical ionization interface operated in positive mode, following Kusch et al. (2018).This work was supported by the Gordon and Betty Moore Foundation.
DOI: 10.1594/pangaea.977630
title: May-June 2023 California Current Fast Repetition Rate Fluorometer (FRRF) Data

description: Continuous phytoplankton physiology measurements were collected with an FRRF onboard the R/V Sally Ride during the Phytoplankton UPwelling Responses (PUPCYCLE) Expedition II, which took place from May 27 - June 12, 2023 on a transit between Newport, OR and San Francsico, CA. The ship's seawater supply line with an intake depth of ~5m delivered seawater to a Soliense Inc. FRRF configured for autonomous operation. A peristaltic pump integrated into the FRRF instrument was used to flush the instruments sample cuvette for 2.5 minutes before introducing a fresh sample. Samples were held in the dark for 1 minute of dark acclimation before collecting 5 dark measurements and 5 light measurements under an actinic irradiance of 150 micromol photons per m2 per second. Continuous sampling was interrupted every three hours to run a photosynthesis-irradiance measurements. During the photosynthesis-irradiance sequence, a single sample was isolated in the cuvette and analyzed under eleven increasing actinic light steps ranging from 0 - 850 micromol photons per m2 per second. Actinic light was evenly supplied by five LED lamps with wavelengths of 445, 470, 505, 530, and 590 nm. All excitation light pulses were delivered by the 445 nm lamp. For further details on the Fast Repetition Rate Fluorometry method see Schuback et al., 2021 (doi:10.3389/fmars.2021.690607). For full description of the biophysical model, see Kolber et. al., 1998 (doi:10.1016/S0005-2728(98)00135-2). Anyone wishing to reprocess this data should please contact Yayla Sezginer (ysezginer@eoas.ubc.ca) who collected this data and can provide further details.
DOI: 10.13130/rd_unimi/n9enq4/phurkd
title: nodes_init-186.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.13130/rd_unimi/n9enq4/tawze1
title: force_disp_init-151.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.936834
title: Table S5, Abundance of crenarchaeol, bacteriohopanetetrol I (BHT-I), bacteriohopanetetrol II (BHT-II), as well as C5 and C6 heterocyst glycolipids (HGs) in ODP cores at sites 964 and 967

description: Carbon-normalized abundance of individual bacteriohopanetetrol (BHP) and heterocyst glycolipid (HG) compounds, as well as the relative abundance of BHT-I vs. BHT-II and HG-C5 compounds vs. HG-C6 compounds in ODP cores at sites 964 and 967. Concentration data for BHPs and HGs were generated using ultra high-performance liquid chromatography coupled to triple quadrupole mass spectrometry following Kusch et al. (2018) and Wörmer et al. (2012), respectively.This work was supported by the Gordon and Betty Moore Foundation.
description: The biomarker abundance data is normalized to g TOC. Fractional abundances of BHT-II [fBHT-II = BHT-I/(BHT-I + BHT-II)] and C5 HGs [fHG-C5 = HG-C5/(HG-C5 + HG-C6)] are given.
DOI: 10.1594/pangaea.937539
title: Water column stable isotopes (¹⁸O and D), salinity, and temperature in the Canadian Arctic Archipelago in the summer of 2019

description: This data contains 125 geolocated water stable isotope, salinity, and temperature measurements from niskin bottle samples at varying depths from 52 Conductivity, Temperature, Depth (CTD) casts along the RV Oden cruise track. The CTD rosette water sampling was conducted following the CLIVAR/GO-SHIP protocol with a 'water cop' keeping track of the sampling order. Sampling for gases goes first, followed by nutrients, water stable isotopes, and then microbiological and DNA sampling during each cast. Samples for water stable isotopes analyses were collected by filling 30-mL Nalgene bottles to the brim. Bottles were closed tightly, sealed with parafilm, and stored in a labeled sample bag. Sampling depths chosen were based on the profile, location, and whether samples were collected for nutrients. Two samples were collected per depth. A total of 250 samples were collected from the 52 CTD casts from 19 July – 04 August 2019. The corresponding salinity and temperature measurements per sampling depth were collected from the CTD data. All water samples were transported to the Atmosphere, Climate, and Ecosystems lab at the University of Illinois at Chicago for processing. The δ¹⁸O and dD were measured using a Picarro l2130-I CRDS water isotope analyzer with a wire mesh inserted in the vaporizer inlet to trap salt from the seawater. Fifteen injections were made for each sample and necessary corrections to address 'memory effect' were employed. Measurements were normalized using the dD and δ¹⁸O values of internal water standards. Data table header includes the event, depth (m) latitude, longitude, sampling date, campaign, sampling method, location, isotope analyzer, salinity and temperature sensor, ¹⁸O values (‰), D values (‰), salinity values (psu), and temperature values (°C).
DOI: 10.13130/rd_unimi/n9enq4/nzizny
title: force_disp_final-175.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.937540
title: Ice core water stable isotopes (¹⁸O and D) and salinity in the Canadian Arctic Archipelago in the summer of 2019

description: This data contains ten (10) geolocated water stable isotopes and salinity measurements from three (3) sea ice cores collected during the cruise. Sea ice core sampling was conducted for three (3) ice coring stations. A sea ice core drill was used to collect the cores. Total length of each core was recorded as well as the temperature per 10 cm interval. The cores were then sectioned per 20 cm and the sections were thawed in different Marvin bottles. Once thawed, multiple water salinity measurements were taken using a YSI professional series digital probe. Water samples were transferred to a 30-mL Nalgene bottles that were filled to the brim. Bottles were tightly closed, sealed with parafilm, and placed inside sampling bags. A total of ten (10) samples were collected from the ice core collected. All water samples were transported to the Atmosphere, Climate, and Ecosystems lab at the University of Illinois at Chicago for processing. The δ¹⁸O and dD were measured using a Picarro l2130-I CRDS water isotope analyzer with a wire mesh inserted in the vaporizer inlet to trap salt from the seawater. Fifteen injections were made for each sample and necessary corrections to address 'memory effect' were employed. Measurements were normalized using the dD and δ¹⁸O values of internal water standards. Header includes following details: event, core segment (cm), latitude, longitude, sampling date, campaign, sampling method, location, isotope analyzer, salinity sensor, ¹⁸O values (‰), D values (‰), salinity values (psu).
DOI: 10.1594/pangaea.937557
title: The relative importance of methylation and demethylation in rice paddy soil varies depending on the presence of rice plants

description: This data was collected in order to understand the influence of rice plants on methylation and demethylation on methylmercury (MeHg) concentration in rice paddy soil, and to assess which process was more dominant in paddy soil. Soil for the experimental work was collected from the Yolo Bypass, near Sacramento, California, an area with a strong commercial rice growing industry. Experimental work was carried out in growth chambers at the University of Washington. Soil was collected in October 2017 and experimental work was carried out in late 2018-early 2019. We established rice paddy microcosms with and without rice plants (n=6 in each treatment) and maintained them until the planted boxes had reached the peak of vegetative growth. At this time, we amended the soil with stable isotope tracers to measure methylation and demethylation potential rates based on an 8 hour incubation period. From these soil samples, we collected information on soil background (ambient) MeHg, inorganic Hg, total sulfur content, and methylation and demethylation potential rate constants. Information on rice root exudation rates was also collected in an experiment performed in 2019. In brief, the following methods were used for each analysis. Methylmercury concentrations (both ambient and tracer) were measured using using isotope dilution-gas chromatography-ICPMS (Hintelmann et al., 2000). Ambient and tracer THg concentrations were analyzed using isotope dilution-cold vapour-ICPMS. Inorganic Hg was calculated as total Hg minus MeHg. Total sulfur was assessed using EPA-3050 combined with EPA 200.7 on a Thermo-Scientific 6300 ICP spectrometer. Methylation and demethylation potential rate constants were measured using stable isotope tracer and the isotope-dilution method of Hintelmann et al 2000. Rice root exudates were measured from soil-grown plants using the calcium sulfate incubation method of Aulakh et al. (2001).
DOI: 10.13130/rd_unimi/n9enq4/1ah8bm
title: nodes_final-158.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.936831
title: Table S4, Content and stable isotopic composition of total organic carbon (TOC) and total nitrogen (TN) for ODP cores at sites 964 and 967

description: Bulk organic carbon (OC) and nitrogen content and stable isotope compositions for ODP cores at sites 964 and 967, including: event name, sapropel layer, core, depth (top), depth (bottom), OC content (mean), OC content (std. dev.), OC d13C (mean), OC d13C (std. dev.), nitrogen content (mean), nitrogen content (std. dev.), d15N (mean), d15N (std. dev.), and C/N ratio. All content and isotope data were generated using a Thermo Scientific Delta V isotope ratio mass spectrometer run in continuous flow mode. Samples were acidified by fumigation prior to OC content and d13C analysis; samples were run without acidification for N content and d15N analysis.This work was supported by the Gordon and Betty Moore Foundation.
DOI: 10.1594/pangaea.937537
title: Precipitation stable isotopes (¹⁸O and D) and salinity in the Canadian Arctic Archipelago in the summer of 2019

description: This data contains one (1) geolocated water stable isotope measurement from one (1) rain event on 29 July 2019. Shipboard rain samples were collected in a separatory funnel filled with a layer of mineral oil to prevent evaporation. Water samples were transferred to a 30-mL Nalgene bottles that were filled to the brim. Bottles were tightly closed, sealed with parafilm, and placed inside sampling bags. It was then transported to the Atmosphere, Climate, and Ecosystems lab at the University of Illinois at Chicago for processing. The δ¹⁸O and dD were measured using a Picarro l2130-I CRDS water isotope analyzer with a wire mesh inserted in the vaporizer inlet. Fifteen injections were made for each sample and necessary corrections to address 'memory effect' were employed. Measurements were normalized using the dD and δ¹⁸O values of internal water standards. Header includes event, latitude, longitude, sampling date, campaign, sampling method, location, isotope analyzer, ¹⁸O values (‰) and D values (‰).
DOI: 10.13130/rd_unimi/n9enq4/4olhq1
title: force_disp_final-167.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.13130/rd_unimi/n9enq4/endfds
title: edges_final-158.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.930575
title: Micro-charcoal of IODP Site 361-U1479
DOI: 10.1594/pangaea.937538
title: Surface water stable isotopes (¹⁸O and D) and salinity in the Canadian Arctic Archipelago in the summer of 2019

description: This data contains 63 geolocated water stable isotopes and salinity measurements from the surface of the ocean along the RV Oden cruise track. Surface seawater sampling was conducted using bucket sampling. This was done by throwing a weighted bucket offboard to sample the surface of the ocean every six (6) hours. Chosen times were 5:00, 11:00, 17:00, and 23:00. Multiple readings of sea surface salinity were recorded using a YSI professional series digital probe per sampling Water samples were transferred to a 30-mL Nalgene bottles that were filled to the brim. Bottles were tightly closed, sealed with parafilm, and placed inside sampling bags. Two samples were collected per sampling point, and all measurements were geolocated. A total of 126 samples were collected from 19 July – 04 August 2019. All water samples were transported to the Atmosphere, Climate, and Ecosystems lab at the University of Illinois at Chicago for processing. The δ¹⁸O and dD were measured using a Picarro l2130-I CRDS water isotope analyzer with a wire mesh inserted in the vaporizer inlet to trap salt from the seawater. Fifteen injections were made for each sample and necessary corrections to address 'memory effect' were employed. Measurements were normalized using the dD and δ¹⁸O values of internal water standards. Data table header includes the event, latitude, longitude, sampling date, campaign, sampling method, location, isotope analyzer model, salinity sensor, ¹⁸O values (‰), D values (‰), and salinity values (psu).
DOI: 10.13130/rd_unimi/n9enq4/qfwjad
title: edge_data_final-165.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.13130/rd_unimi/n9enq4/jxajmu
title: force_disp_final-153.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.13130/rd_unimi/n9enq4/zfhvfb
title: edges_final-181.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.931640
title: Concentrations of select dissolved anions in porewater retrieved by Rhizon sampling from hydrothermal sediments of the Guaymas Basin in 2016

description: The Guaymas Basin hydrothermal vents in the Gulf of California have been visited during RV Atlantis mission AT37-06 in December 2016. Aim of this mission was to understand element fluxes and microbially driven reactions at the diffusive vent sites. The submarine ALVIN and push cores were used to sample undisturbed sediments at specific locations covering different temperature and geochemical regimes. From these cores porewater was sampled using Rhizons. Here we present concentrations of select anions in the porewater. We measured the concentrations of sulfate, sulfide, chloride, ammonia, phosphate and silicate.
DOI: 10.1594/pangaea.977805
title: Foraminiferal geochemical data across the Paleocene-Eocene Thermal Maximum from IODP Site 1258

description: This dataset includes geochemical measurements made on planktic foraminifers (Morozovella velascoensis) recovered from sediment cores spanning the Paleocene-Eocene Thermal Maximum (PETM) at IODP Site 1258 (Demerara Rise, Tropical North Atlantic). Measurements include carbon and oxygen stable isotope determinations by Isotope Ratio Mass Spectrometry (IRMS, ThermoFisher, Delta V Advantage), and Mg/Ca ratios measured by Inductively-Coupled Plasma Mass Spectrometry (ICPMS, Agilent, 8900). All measurements were made between 2021 and 2023 by Chels Howard and Donald Penman at Utah State University. These measurements were made to constrain tropical Atlantic sea surface temperature and hydrologic change across the PETM.
DOI: 10.13130/rd_unimi/n9enq4/gl4ofp
title: force_disp_final-191.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.939210
title: Simulated sea surface pCO2 by a data-driven model in the western Arctic Ocean 1994-2019

description: This archived NetCDF file (pCO2_daily_1994_2019_western_Arctic_Ocean.nc) contains the daily sea surface partial pressure of CO2 (pCO2, Unit: µatm) for cells at a 1° by 1° spatial resolution of the simulation period (9496 days, from January 1st 1994 to December 31st 2019) in the western Arctic Ocean (65°N-85°N, 180°E-235°E). The pCO2 field was generated by a data-driven dynamic model described in the manuscript “The changing CO2 sink in the western Arctic Ocean from 1994 to 2019”. The size of the matrix containing the results is 1100 by 9496. The coordinates of all the 1100 cells are provided in the 'latitudes' and 'longitudes' variables.
description: Version 2, 2021-12-10: Previous version doi:10.1594/PANGAEA.931873. The new version includes an updated NCP input in the model.
DOI: 10.1594/pangaea.967362
title: Species-specific benthic foraminifera stable carbon isotope ratio offset of ODP Site 145-883

description: Here we present stable oxygen and carbon isotope measurements of C. wuellerstorfi and U. peregrina in discrete samples from ODP site 883. Samples were freeze dried, weighed, soaked in water for 24 hours to disaggregate, and wet sieved using a 150 μm mesh sieve. Samples were then dried at 40°C. Select genera and species were picked and comprehensively counted from the 150–355 μm fraction. 106 samples were run in duplicate or better. Specimens selected for isotopic analysis were cleaned with 70 μL ethanol and sonicated for 30 seconds. Ethanol was drawn off with a pipette, and specimens were dried overnight at room temperature. Cibicidoides mundulus was used in 2 samples where Cibicidoides wuellerstorfi was not sufficiently abundant to provide a good signal for mass spectrometry. Isotope ratios were quantified at the Brown University stable isotope facility with a Finnigan Mat 252 with Carbonate Kiel III autosampler, in which individual samples were reacted with 70°C H3PO4. Cibicidoides δ18O values were adjusted by +0.64‰ to Uvigerina values. Cibicidoides mundulus isotopic values were taken as equivalent to C. wuellerstorfi. Only C. wuellerstrofi values should be used for analysis of stable carbon isotope data.
DOI: 10.13130/rd_unimi/n9enq4/od65mj
title: edges_init-178.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.13130/rd_unimi/n9enq4/qcomae
title: edges_final-173.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.967372
title: Calcium carbonate weight percent and mass accumulation rates of ODP Site 145-883

description: Here we present new and shipboard calcium carbonate weight percent and mass accumulation rates in discrete samples from ODP 883B. 71 accelerated solvent extractor sample residues were analyzed for calcium carbonate to supplement the 23 measurements in our study interval made by the shipboard scientific party (total N = 94). Approximately 30–60 mg of freeze-dried sediment was weighed prior to analysis in a UIC Coulometrics CO2 Coulometer in the Marine Analytical Lab at the University of California, Santa Cruz. Samples were acidified with 2 M HS and heated to 60°C. Measured C was converted to CaCO3 by a conversion factor of 8.33, determined by dividing the molecular weight of CaCO3 by that of C. Measurement error was ±1.85%, determined by repeated analysis of a homogenized laboratory standard calcium carbonate. Calcium carbonate mass accumulation rates were calculated as the product of weight percent CaCO3, dry bulk density, and sedimentation rate. Sedimentation rates were derived from the ODP 883 orbitally tuned age model presented in this study. Dry bulk density was estimated using the relationship between GRAPE WBD and measured dry bulk density in cores 9H–19H from hole 883C . CaCO3 weight percent was correlated to GRAPE WBD from hole 883B by resampling GRAPE WBD to the CaCO3 data using the "approx" function in .R.