cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.902577
title: WAIS Divide Deep ice core 0-68 ka WD2014 chronology

description: The West Antarctic Ice Sheet (WAIS) Divide deep ice core WD2014 chronology, consisting of ice age, gas age, delta-age and uncertainties therein. The West Antarctic Ice Sheet Divide (WAIS Divide, WD) ice core is a newly drilled, high-accumulation deep ice core that provides Antarctic climate records of the past ~68 ka at unprecedented temporal resolution.The upper 2850 m (back to 31.2 ka BP; Sigl et al., 2015, Sigl et al., 2016) have been dated using annual-layer counting based on counting of annual layers observed in the chemical, dust and electrical conductivity records. The measurements were interpreted manually and with the aid of two automated methods. We validated the chronology by comparing of the cosmogenic isotope records of 10Be from WAIS Divide and 14C for IntCal13. We demonstrated that over the Holocene WD2014 was consistently accurate to better than 0.5% of the age.The chronology for the deep part of the core (below 2850m; 67.8-31.2 ka BP; Buizert et al., 2015) is based on stratigraphic matching to annual-layer-counted Greenland ice cores using globally well-mixed atmospheric methane. We calculate the WD gas age-ice age difference (Delta age) using a combination of firn densification modeling, ice-flow modeling, and a data set of d15N-N2, a proxy for past firn column thickness. The largest Delta age at WD occurs during the Last Glacial Maximum, and is 525 +/- 120 years. We synchronized the WD chronology to a linearly scaled version of the layer-counted Greenland Ice Core Chronology (GICC05), which brings the age of Dansgaard-Oeschger (DO) events into agreement with the U/Th absolutely dated Hulu Cave speleothem record.
description: Citing the timescales:for 0.2.4 ka BP use Sigl et al., (2015);for 2.4-31.2 ka use Sigl et al., (2016);for 31.2-68 ka BP use Buizert et al., (2015).
DOI: 10.13130/rd_unimi/n9enq4/w8ymjm
title: force_disp_final-105.dat

description: 250729_SIMULATION_DATA/TENS-M_1.zip
DOI: 10.1594/pangaea.933338
title: Average reconstructed calcification temperatures based on the Mg/Ca ratios of two species of planktonic foraminifera from IODP Site 363-U1488
DOI: 10.13130/rd_unimi/n9enq4/3iwpjw
title: edges_init-135.dat

description: 250729_SIMULATION_DATA/TENS-M_1.zip
DOI: 10.1594/pangaea.933339
title: Mg/Ca, Sr/Ca and Mn/Ca data from IODP Site 363-U1488
DOI: 10.1594/pangaea.960603
title: Carbon monoxide (CO) in 10 sec integrated high resolution from ice core Taldice
DOI: 10.13130/rd_unimi/n9enq4/bzyzl3
title: edges_final-149.dat

description: 250729_SIMULATION_DATA/TENS-M_1.zip
DOI: 10.13130/rd_unimi/n9enq4/mwsp9y
title: edges_final-129.dat

description: 250729_SIMULATION_DATA/TENS-M_1.zip
DOI: 10.1594/pangaea.960573
title: Carbon monoxide (CO) in 10 sec integrated high resolution from ice core ABN
DOI: 10.1594/pangaea.960604
title: Atmospheric Carbon monoxide (CO) measured at Mawson Station Antarctica by CSIRO, raw flask data
DOI: 10.13130/rd_unimi/n9enq4/3zjbis
title: nodes_init-100.dat

description: 250729_SIMULATION_DATA/TENS-M_1.zip
DOI: 10.13130/rd_unimi/n9enq4/mxf1l8
title: nodes_final-145.dat

description: 250729_SIMULATION_DATA/TENS-M_1.zip
DOI: 10.13130/rd_unimi/n9enq4/pl28qz
title: opt-100.txt

description: 250729_SIMULATION_DATA/TENS-M_1.zip
DOI: 10.1594/pangaea.931021
title: Ba/Fe ratios of sediment core MD12-3394
DOI: 10.13130/rd_unimi/n9enq4/sykqn2
title: edges_final-115.dat

description: 250729_SIMULATION_DATA/TENS-M_1.zip
DOI: 10.13130/rd_unimi/n9enq4/tj1gw9
title: force_disp_init-128.dat

description: 250729_SIMULATION_DATA/TENS-M_1.zip
DOI: 10.1594/pangaea.932953
title: Neodymium isotopes, planktic and benthic stable carbon and oxygen isotopes, sortable silt and percentage CaCO3 from sediment core TT1811-34GGC, SE Indian Ocean

description: Neodymium isotope data measured on mixed species of uncleaned planktic foraminifera, planktic (G. bulloides) and benthic (C. kullenbergi) stable carbon and oxygen isotopes, mean sortable silt size fraction measurements and CaCO3 contents of sediments from giant gravity core TT1811-34GGC, located within the SE Indian/Southern Ocean. Data span the last glacial cycle, from 118,000 years B.P. to the late Holocene. The chain of events surrounding the initiation and intensification of the last glacial cycle remain relatively poorly understood. In particular, the role of Southern Ocean paleocirculation changes is poorly constrained, in part, owing to a paucity of sedimentary records from this region. In this study we present multiproxy data – including neodymium isotope and sortable silt measurements – for paleocirculation changes within the deep (3167 m water depth) Indian sector of the Southern Ocean from a new sediment core, TT1811-34GGC (41.718°S, 80.163°E). We find a tight coupling between circulation changes, Antarctic climate, and atmospheric CO2 concentrations throughout the last 118,000 years, even during the initial stages of glacial inception of Marine Isotope Stage (MIS) 5.4 to 5.1. We find that periods of cooling correspond to reductions in the entrainment of North Atlantic-sourced waters within the deep Southern Ocean, as evidenced by more radiogenic neodymium isotope values of deep water bathing our core site. Cooling also corresponds to generally slower bottom water flow speeds, as indicated by finer sortable silt size fractions. A reduction in entrainment of North-Atlantic sourced waters occurred during MIS 5.4-5.1, when Atlantic circulation was strong, suggesting a Southern hemisphere control on paleocirculation changes at that time. We hypothesize that expanded Southern Ocean sea-ice during MIS 5.4 increased the density of the deep Southern Ocean, reducing the ability of Atlantic-sourced waters to mix into the deep Southern Ocean. This led to an expanded contribution of Pacific Deep Water within the lower circulation cell and increased stratification within the deep Southern Ocean. These paleocirculation changes can help account for the reduction in atmospheric CO2 across the MIS 5.5 to 5.4 transition, and in doing so help explain the chain of events surrounding the decent into the last glacial period.
DOI: 10.13130/rd_unimi/n9enq4/ldihtn
title: force_disp_init-106.dat

description: 250729_SIMULATION_DATA/TENS-M_1.zip
DOI: 10.13130/rd_unimi/n9enq4/wwld2h
title: force_disp_final-111.dat

description: 250729_SIMULATION_DATA/TENS-M_1.zip
DOI: 10.1594/pangaea.933425
title: Automatic weather station buoy data PS81/517 from Weddell Sea, Antarctica, 2013

description: Automatic weather station buoy data PS81/517 from Weddell Sea, Antarctica, 2013. The buoy was deployed together with an ice mass balance buoy (see under related) on sea ice station PS81/517 from Research Vessel Polarstern in the Antarctic Weddell Sea in austral winter 2013 (cruise leg ANT-XXIX/6, AWECS campaign). The automatic weather station provides data between 2013-07-30T19:00 and 2013-11-10T12:00. Time is in UTC.
description: Automatic weather station (AWS) description:============================================- Data contains date time, air temperature, relative humidity, incoming shortwave radiation, snow depth, wind speed and direction, snow particle counters for snow drift, latitude and longitude.- See drawing PS81-517_AWS.pdf for installation details.- Processing done here is only correction of snow depth for temperature, and correction of relative to absolute wind direction. To correct wind direction data for floe rotation, data from IMB was used. However the IMB GPS receiver gave positions with a high degree of scatter (&gt;50m), and was unusable for floe rotation correction, therefore IMB magnetometer data was used. Offset between wind direction from the AWS and from the Polarstern is -0.5° (using average of data from first 12 hours after AWS installed). Therefore at installation on 2013-07-30T18:45: [true wind direction] = [AWS wind direction - 0.5°]- Snow depth quality good range is 152 - 210.- Snow depth temperature correction is SDcorr = SD*sqrt[(273.15+Tair)/273.15]- Average wind direction is identical to the instantaneous wind direction value for all 10-minute periods, most likely a datalogger code issue.
DOI: 10.1594/pangaea.933565
title: MagnaProbe snow thickness during a floe-scale walk on station PS81/503_GPS1

description: Snow depth measured during a floe-scale walk (FSW) from Magnaprobe (MP), see Sturm and Holmgren (2018) for details. Floe-scale walks were performed to capture variability on a larger scale than the laser scan field.
description: Coordinates:============X and Y coordinates are relative to a GPS base station installed on each floe. Coordinates were determined using post-processing kinematic GPS (PPK-GPS), and corrected for floe ration and drift. Coordinates of measurements inside the laser scanning area were particularly carefully processed to collocate measurements as accurately as possible (within a few cm). The vertical height above sea level in the TLS data was determined by using reflectors on poles. Upon installation of these reflector poles, the ice was drilled through and the height of the reflector above sea level was determined. For details, see Wever et al. (2021).On the floe scale walk, magnaprobe coordinates have been equally processed as in the laser scanning area. However, for the GEM-2 instrument, the position of the magnaprobe was taken for the corresponding time stamp in the GEM-2 data. Since the GEM-2 instrument was following the Magnaprobe surveyor with a few m distance, this leads to less precise positioning. However, the GEM-2 instrument also has a footprint of similar order of magnitude (see Hunkeler et al., 2015).Coordinate reference points:============================All coordinates are relative to GPS base station 1, in a local coordinate system where X and Y coordinates align with easting and northing, respectively, from the respective UTM Zone at a specific point in time. The respective coordinates of GPS base station 1 for this dataset are:For PS81/503: Location of GPS base station 1, July 8 2013, 1646 UTC:WGS84 : latitude=-67.188921 longitude=-13.219895 UTM Zone 28S : northing=2546456 easting=577005
DOI: 10.13130/rd_unimi/n9enq4/cfmrc8
title: force_disp_final-106.dat

description: 250729_SIMULATION_DATA/TENS-M_1.zip
DOI: 10.1594/pangaea.933424
title: Ice mass balance data PS81/517 from Weddell Sea, Antarctica, 2013

description: Ice mass balance (IMB) buoy data PS81/517 from Weddell Sea, Antarctica, 2013. The buoy was deployed together with an automatic weather station buoy (see under related) on sea ice station PS81/517 from Research Vessel Polarstern in the Antarctic Weddell Sea in austral winter 2013 (cruise leg ANT-XXIX/6, AWECS campaign). The IMB buoy provides data between 2013-07-31T17:28:00 and 2013-10-11T00:30:00.The IMB buoy was kindly provided by the Scottish Association for Marine Science (SAMS). The IMB buoy consisted of a thermistor string of 5 m length, with a 2 cm sensor spacing. Interfaces were determined by hand. Heating cycle data was of poor quality, so the interfaces were picked mostly based on temperature. The ice interface will be pretty good (~2 cm accuracy), and the snow is probably a bit more inaccurate. The bottom interface was determined from the existence of a knee in the temperature profile where apparent. The top interface was picked based on the transition to constant temperature in the air and the diurnal variability. This may be subject to some bias, but note that the changes are only a few cm until the end where the IMB probably died because it got washed over (based on recorded temperatures). No flooding is apparent in the measurements.
DOI: 10.1594/pangaea.933566
title: MagnaProbe snow thickness during a floe-scale walk on station PS81/506_GPS1

description: Snow depth measured during a floe-scale walk (FSW) from Magnaprobe (MP), see Sturm and Holmgren (2018) for details. Floe-scale walks were performed to capture variability on a larger scale than the laser scan field.
description: Coordinates:============X and Y coordinates are relative to a GPS base station installed on each floe. Coordinates were determined using post-processing kinematic GPS (PPK-GPS), and corrected for floe ration and drift. Coordinates of measurements inside the laser scanning area were particularly carefully processed to collocate measurements as accurately as possible (within a few cm). The vertical height above sea level in the TLS data was determined by using reflectors on poles. Upon installation of these reflector poles, the ice was drilled through and the height of the reflector above sea level was determined. For details, see Wever et al. (2021).On the floe scale walk, magnaprobe coordinates have been equally processed as in the laser scanning area. However, for the GEM-2 instrument, the position of the magnaprobe was taken for the corresponding time stamp in the GEM-2 data. Since the GEM-2 instrument was following the Magnaprobe surveyor with a few m distance, this leads to less precise positioning. However, the GEM-2 instrument also has a footprint of similar order of magnitude (see Hunkeler et al., 2015).Coordinate reference points:============================All coordinates are relative to GPS base station 1, in a local coordinate system where X and Y coordinates align with easting and northing, respectively, from the respective UTM Zone at a specific point in time. The respective coordinates of GPS base station 1 for this dataset are:For PS81/506: Location of GPS base station 1, July 12 2013, 2000 UTC:WGS84 : latitude=-67.19689 longitude=-23.15692UTM Zone 27S : northing=2545052 easting=406729
DOI: 10.13130/rd_unimi/n9enq4/aeqynn
title: opt-175.txt

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.13130/rd_unimi/n9enq4/kdhmus
title: edges_final-195.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.933564
title: GEM-2 combined snow and ice thickness within the laser scanning area on station PS81/517_GPS1

description: Combined snow and ice thickness from a multifrequency electromagnetic induction instrument (GEM-2) in the terrestrial laser scanning (TLS) area, see Hunkeler et al. (2015) for details. GEM-2 was performed inside the laser scan field after all scans had been acquired.
description: Coordinates:============X and Y coordinates are relative to a GPS base station installed on each floe. Coordinates were determined using post-processing kinematic GPS (PPK-GPS), and corrected for floe ration and drift. Coordinates of measurements inside the laser scanning area were particularly carefully processed to collocate measurements as accurately as possible (within a few cm). The vertical height above sea level in the TLS data was determined by using reflectors on poles. Upon installation of these reflector poles, the ice was drilled through and the height of the reflector above sea level was determined. For details, see Wever et al. (2021).On the floe scale walk, magnaprobe coordinates have been equally processed as in the laser scanning area. However, for the GEM-2 instrument, the position of the magnaprobe was taken for the corresponding time stamp in the GEM-2 data. Since the GEM-2 instrument was following the Magnaprobe surveyor with a few m distance, this leads to less precise positioning. However, the GEM-2 instrument also has a footprint of similar order of magnitude (see Hunkeler et al., 2015).Coordinate reference points:============================All coordinates are relative to GPS base station 1, in a local coordinate system where X and Y coordinates align with easting and northing, respectively, from the respective UTM Zone at a specific point in time. The respective coordinates of GPS base station 1 for this dataset are:For PS81/517: Location of GPS base station 1, July 31 2013, 1942 UTC:WGS84 : latitude=-63.39434 longitude=-51.13041UTM Zone 22S : northing=2970466 easting=493483
DOI: 10.1594/pangaea.933754
title: PM2.5 chloride and PM2.5 nitrate in Kalamazoo, Michigan, USA during January-February 2018

description: Measurements were conducted near Kalamazoo, MI (42.2784°N, 85.6105°W) as part of the 2018 SNow and Atmospheric Chemistry at Kalamazoo (SNACK) campaign.The study was conducted from January 20 to February 24, 2018, at Western Michigan University in Kalamazoo, MI, USA.PM2.5 chloride and nitrate were measured at 1.8 m above ground level using an an ambient ion monitor-ion chromatography instrument (AIM-IC; model 9000D, URG Corp.)
description: LiF was used as an internal standard during field measurements. Offline calibrations, relative to LiF, were performed after the campaign using solutions of known concentrations (Markovic et al 2012, doi:10.1039/c2em00004k, and Chen et al 2019, doi:10.1021/acsearthspacechem.9b00023).AIM-IC has 3 h time resolution. Inorganic ion mass concentrations are given as micrograms per cubic meter.Gaps in the data represent periods where the instruments were not operational. Only ambient data is provided.
DOI: 10.13130/rd_unimi/n9enq4/qqxdqh
title: nodes_init-151.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.930009
title: Unfiltered snow surface height above sea level on station PS81/517_GPS1

description: Terrestrial laser scanning (TLS) was used to determine the snow surface height above sea level for an approximately 50x50m patch. The reference to sea level was obtained using registration targets drilled through the ice with a measured distance between the target and the water level in the drill holes.
description: This dataset was not imported into the relational system due to its size.--Coordinates:============X and Y coordinates are relative to a GPS base station installed on each floe. Coordinates were determined using post-processing kinematic GPS (PPK-GPS), and corrected for floe ration and drift. Coordinates of measurements inside the laser scanning area were particularly carefully processed to collocate measurements as accurately as possible (within a few cm). The vertical height above sea level in the TLS data was determined by using reflectors on poles. Upon installation of these reflector poles, the ice was drilled through and the height of the reflector above sea level was determined. For details, see Wever et al. (2021).On the floe scale walk, magnaprobe coordinates have been equally processed as in the laser scanning area. However, for the GEM-2 instrument, the position of the magnaprobe was taken for the corresponding time stamp in the GEM-2 data. Since the GEM-2 instrument was following the Magnaprobe surveyor with a few m distance, this leads to less precise positioning. However, the GEM-2 instrument also has a footprint of similar order of magnitude (see Hunkeler et al., 2015).Coordinate reference points:============================All coordinates are relative to GPS base station 1, in a local coordinate system where X and Y coordinates align with easting and northing, respectively, from the respective UTM Zone at a specific point in time. The respective coordinates of GPS base station 1 for this dataset are:For PS81/517: Location of GPS base station 1, July 31 2013, 1942 UTC:WGS84 : latitude=-63.39434 longitude=-51.13041UTM Zone 22S : northing=2970466 easting=493483
DOI: 10.1594/pangaea.933559
title: GEM-2 combined snow and ice thickness during a floe-scale walk on station PS81/506_GPS1

description: Combined snow and ice thickness from a multifrequency electromagnetic induction instrument (GEM-2), see Hunkeler et al. (2015) for details.
description: Coordinates:============X and Y coordinates are relative to a GPS base station installed on each floe. Coordinates were determined using post-processing kinematic GPS (PPK-GPS), and corrected for floe ration and drift. Coordinates of measurements inside the laser scanning area were particularly carefully processed to collocate measurements as accurately as possible (within a few cm). The vertical height above sea level in the TLS data was determined by using reflectors on poles. Upon installation of these reflector poles, the ice was drilled through and the height of the reflector above sea level was determined. For details, see Wever et al. (2021).On the floe scale walk, magnaprobe coordinates have been equally processed as in the laser scanning area. However, for the GEM-2 instrument, the position of the magnaprobe was taken for the corresponding time stamp in the GEM-2 data. Since the GEM-2 instrument was following the Magnaprobe surveyor with a few m distance, this leads to less precise positioning. However, the GEM-2 instrument also has a footprint of similar order of magnitude (see Hunkeler et al., 2015).Coordinate reference points:============================All coordinates are relative to GPS base station 1, in a local coordinate system where X and Y coordinates align with easting and northing, respectively, from the respective UTM Zone at a specific point in time. The respective coordinates of GPS base station 1 for this dataset are:For PS81/506: Location of GPS base station 1, July 12 2013, 2000 UTC:WGS84 : latitude=-67.19689 longitude=-23.15692UTM Zone 27S : northing=2545052 easting=406729
DOI: 10.13130/rd_unimi/n9enq4/46p5x6
title: edges_final-192.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.13130/rd_unimi/n9enq4/adfq6l
title: nodes_final-186.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.933558
title: GEM-2 combined snow and ice thickness during a floe-scale walk on station PS81/503_GPS1

description: Combined snow and ice thickness from a multifrequency electromagnetic induction instrument (GEM-2), see Hunkeler et al. (2015) for details.
description: Coordinates:============X and Y coordinates are relative to a GPS base station installed on each floe. Coordinates were determined using post-processing kinematic GPS (PPK-GPS), and corrected for floe ration and drift. Coordinates of measurements inside the laser scanning area were particularly carefully processed to collocate measurements as accurately as possible (within a few cm). The vertical height above sea level in the TLS data was determined by using reflectors on poles. Upon installation of these reflector poles, the ice was drilled through and the height of the reflector above sea level was determined. For details, see Wever et al. (2021).On the floe scale walk, magnaprobe coordinates have been equally processed as in the laser scanning area. However, for the GEM-2 instrument, the position of the magnaprobe was taken for the corresponding time stamp in the GEM-2 data. Since the GEM-2 instrument was following the Magnaprobe surveyor with a few m distance, this leads to less precise positioning. However, the GEM-2 instrument also has a footprint of similar order of magnitude (see Hunkeler et al., 2015).Coordinate reference points:============================All coordinates are relative to GPS base station 1, in a local coordinate system where X and Y coordinates align with easting and northing, respectively, from the respective UTM Zone at a specific point in time. The respective coordinates of GPS base station 1 for this dataset are:For PS81/503: Location of GPS base station 1, July 8 2013, 1646 UTC:WGS84 : latitude=-67.188921 longitude=-13.219895 UTM Zone 28S : northing=2546456 easting=577005
DOI: 10.1594/pangaea.942967
title: C37-38 alkenone of ODP Hole 130-806B in the Indo-Pacific Warm Pool
DOI: 10.13130/rd_unimi/n9enq4/cnw4zl
title: force_disp_final-174.dat

description: 250729_SIMULATION_DATA/TENS-N_1.zip
DOI: 10.1594/pangaea.968276
title: Vegetation composition in drained lake basins in northern Alaska, August 2018

description: These data originate from a field survey in early August 2018 in the Teshekpuk Lake region on the Alaskan North Slope. We surveyed plant species composition and cover. Vegetation height was measured in the field.