cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.886045
title: Water stable isotope record of ice core NGRIP (top section)

description: A high resolution (0.05 m) water isotopic record (d18O) is available from the NorthGRIP ice core. In this study we look into the water isotope diffusion history as estimated by the spectral characteristics of the d18O time series covering the last 16,000 years. The diffusion of water vapor in the porous medium of the firn pack attenuates the initial isotopic signal, predominantly having an impact on the high frequency components of the power spectrum. Higher temperatures induce higher rates of smoothing and thus the signal can be used as a firn paleothermometer. We use a water isotope diffusion model coupled to a steady-state densification model in order to infer the temperature signal from the site, assuming the accumulation and strain rate history as estimated using the GICC05 layer counted chronology and a Dansgaard-Johnsen ice flow model. The temperature reconstruction accurately captures the timing and magnitude of the Bølling-Allerød and Younger Dryas transitions. A Holocene climatic optimum is seen between 7 and 9 ky b2k with an apparent cooling trend thereafter. Our temperature estimate for the Holocene climatic optimum, points to a necessary adjustment of the ice thinning function indicating that the ice flow model overestimates past accumulation rates by about 10% at 8 ky b2k. This result, is supported by recent gas isotopic fractionation studies proposing a similar reduction for glacial conditions. Finally, the record presents a climatic variability over the Holocene spanning millennial and centennial scales with a profound cooling occurring at approximately 4000 years b2k. The new reconstruction technique is able to provide past temperature estimates by overcoming the issues apparent in the use of the classical d18O slope method. It can at the same time resolve temperature signals at low and high frequencies.
description: The data are measured discretely on an IRMS with a resolution of 2.5 cm. A late Holocene section with an age around 0.9 kab2k.
DOI: 10.1594/pangaea.886046
title: Water stable isotope record of ice core WAIS divide

description: Changes in atmospheric circulation over the past five decades have enhanced the wind-driven inflow of warm ocean water onto the Antarctic continental shelf, where it melts ice shelves from below. Atmospheric circulation changes have also caused rapid warming over the West Antarctic Ice Sheet, and contributed to declining sea-ice cover in the adjacent Amundsen-Bellingshausen seas. It is unknown whether these changes are part of a longer-term trend. Here, we use water-isotope (d18O) data from an array of ice-core records to place recent West Antarctic climate changes in the context of the past two millennia. We find that the d18O of West Antarctic precipitation has increased significantly in the past 50 years, in parallel with the trend in temperature, and was probably more elevated during the 1990s than at any other time during the past 200 years. However, d18O anomalies comparable to those of recent decades occur about 1% of the time over the past 2,000 years. General circulation model simulations suggest that recent trends in d18O and climate in West Antarctica cannot be distinguished from decadal variability that originates in the tropics. We conclude that the uncertain trajectory of tropical climate variability represents a significant source of uncertainty in projections of West Antarctic climate and ice-sheet change.
description: Stable Water Isotope Data from WAIS Divide Ice Core 2005. Interpolated on 5 cm until the depth of 269.65 (after this depth sampling becomes coarse).
description: Supplement to: Steig, Eric J; Ding, Quinghua; White, James W C; Küttel, Meinrad; Rupper, Summer B; Neumann, T A; Neff, Peter D; Gallant, Ailie J E; Mayewski, Paul Andrew; Taylor, Kendrick C; Hoffmann, Georg; Dixon, Daniel A; Schoenemann, Spruce W; Markle, Bradley R; Fudge, Tyler J; Schneider, David P; Schauer, Andrew J; Teel, Rebecca P; Vaughn, Bruce H; Burgener, Landon; Williams, Jessica; Korotkikh, Elena (2013): Recent climate and ice-sheet changes in West Antarctica compared with the past 2,000 years. Nature Geoscience, 6(5), 372-375
DOI: 10.1594/pangaea.886064
title: Elevation zones Hallstätter Gletscher, Dachstein, Austria, 2015/2016
DOI: 10.1594/pangaea.886065
title: Elevation zones Jamtalferner, Silvretta, Austria, 2015/2016
DOI: 10.1594/pangaea.886076
title: Elevation zones Hallstätter Gletscher, Dachstein, Austria, 2016/2017
DOI: 10.1594/pangaea.886077
title: Elevation zones Jamtalferner, Silvretta, Austria, 2016/2017
DOI: 10.1594/pangaea.886080
title: Glacier mass balance Hallstätter Gletscher, Dachstein, Austria, 2015/2016
DOI: 10.1594/pangaea.890896
title: Atmospheric dust fluxes from the Antarctic ice core Talos Dome

description: Atmospheric dust concentration from the Antarctic ice core Talos Dome during the time interval between 700 and 25,000 years before present. Ice age and snow accumulation rate were derived from the AICC2012 chronology (Veres et al., 2013; Bazin et al., 2013). Dust fluxes were calculated combining dust concentration in ice (assessed through coulter counter) and the snow accumulation rate inferred from the chronology.
DOI: 10.1594/pangaea.891279
title: A database of Isotope time-averaged values and standard deviations from precipitations, snow and firn/ice cores

description: The present data consists in a database of isotope (δO18, δD and deuterium excess) data from precipitations, snow and firn/ice cores, gathering the following data:- the isotopic surface snow data from Masson et al. (2008, doi:10.1175/2007JCLI2139.1)- the Antarctica2k database from Stenni et al. (2017, doi:10.5194/cp-13-1609-2017), available on https://www.ncdc.noaa.gov/paleo-search/study/22589- the data from Fernandoy et al. (2012, doi:10.5194/tc-6-313-2012)- the precipitation data from Rozanski et al. (1993, doi:10.1029/GM078p0001) and available on the IAEA/GNIP platform-data personnally communicatedSee below for full references of articles and datasets.The "averages" xls file give necessary informations to retrieve the data a its original temperoral scale, as well as time-averaged, standard deviations and extremum values. They are completed isotope time-averages and standard deviations from the ECHAM5-wiso model forced to the ERA-interim reanalysis and run at the daily scale over the period 1979-2013 (Werner et al., 2011; doi:10.1029/2011JD015681).The "seasonal_snowfall.xls" file give the seasonal cycles of precipitation, temperature, δO18 and deuterium excecss of snowfall data, as used in the associated manuscript.
description: Supplement to: Goursaud, Sentia; Masson-Delmotte, Valerie; Favier, Vincent; Orsi, Anaïs; Werner, Martin (2018): Water stable isotope spatio-temporal variability in Antarctica in 1960–2013: observations and simulations from the ECHAM5-wiso atmospheric general circulation model. Climate of the Past, 14(6), 923-946
DOI: 10.1594/pangaea.899571
title: The Roosevelt Island Ice Core Chronology 2017 (RICE17)

description: A timescale for the Roosevelt Island Climate Evolution (RICE) ice core, Ross Ice Shelf, West Antarctica, covering the last 83,000 years.Top part (0-343.67m) of the ice chronology is based on annual layer counting. Below 343.67m, the ice chronology is based on gas matching to WAIS Divide on the WD2014 chronology and modelling of delta-age.The gas timescale (entire core) is based on gas matching to target records derived from WAIS Divide on the WD2014 chronology and NGRIP on the GICC05 chronology, modified for continuity with WD2014. The chronology (0-746m) is interpolated between matchpoints assuming piecewise constant accumulation and linearly decreasing annual layer thicknesses. For the top 343.67m, depths of the gas-age matchpoints have been interpolated to the nearest annual layer.Continuity of the RICE ice core ends at 746.00 m, and delta-age was not calculated for the deeper part. In this section, the interpolated gas timescale is calculated using linear interpolation between matchpoints, and ice ages are calculated using a constant delta-age of 200 years.For questions on the use or construction of this chronology, please contact:Mai Winstrup mailto:mai@nbi.ku.dk : Annual-layer-counted ice chronology (0-343.67m)James E. Lee mailto:jlee@coas.oregonstate.edu : Gas chronology (all core), and gas-matched ice chronology (343.67-753.75m)
description: empty cells = NaN
DOI: 10.1594/pangaea.897924
title: Glacier mass balance Hallstätter Gletscher, Dachstein, Austria, 2017/2018
DOI: 10.1594/pangaea.897925
title: Glacier mass balance Jamtalferner, Silvretta, Austria, 2017/2018
DOI: 10.1594/pangaea.897929
title: Elevation zones Hallstätter Gletscher, Dachstein, Austria, 2017/2018
DOI: 10.1594/pangaea.897930
title: Elevation zones Jamtalferner, Silvretta, Austria, 2017/2018
DOI: 10.1594/pangaea.899036
title: Methane in NEEM-2011-S1 ice core from North Greenland, 1800 years continuous record: full dataset, v2

description: Description and NotesDescription: Methane concentration from the Greenland NEEM-2011-S1 Ice Core from 71 to 408m depth (~270-1961 CE). Methane concentrations analysed online by laser spectrometer (SARA, Spectroscopy by Amplified Resonant Absorption, developed at Laboratoire Interdisciplinaire de Physique, Grenoble, France) on gas extracted from an ice core processed using a continuous melter system (Desert Research Institute). Methane data have a 5 second integration time (raw data acquisition rate 0.6 Hz). Analytical precision, from Allan Variance test, is 0.9 ppb (2 sigma). Long-term reproducibility is 2.6% (2 sigma). Gaps in the record are due to problems during online analysis. Online analysis conducted August-September 2011.Note: Lat-Long provided is for main NEEM borehole. The NEEM-2011-S1 core was drilled 200 m distance away in 2011 to 410 m depth.Methane concentrations are reported on NOAA2004 scale (instrument calibrated on dry synthetic air standards).A correction factor of 1.079 has been applied to all data to correct for methane dissolution in melted ice core sample prior to gas extraction. Correction factor calculated using empirical data (concentrations not aligned/tied to existing discrete methane measurements).Additional methods description provided in:* Stowasser, C., Buizert, C., Gkinis, V., Chappellaz, J., Schupbach, S., Bigler, M., Fain, X., Sperlich, P., Baumgartner, M., Schilt, A., Blunier, T., 2012. Continuous measurements of methane mixing ratios from ice cores. Atmos. Meas. Tech. 5, 999-1013.* Morville, J., Kassi, S., Chenevier, M., Romanini, D., 2005. Fast, low-noise, mode bymode, cavity-enhanced absorption spectroscopy by diode-laser self-locking. Appl. Phys. B Lasers Opt. 80, 1027-01038.* NEEM (North Greenland Eemian Ice Drilling) project information http://neem.dk/
description: Entire CH4 dataset at 5 s integration time.
DOI: 10.1594/pangaea.899037
title: Methane in NEEM-2011-S1 ice core from North Greenland, 1800 years continuous record: outliers removed, v2

description: Description and NotesDescription: Methane concentration from the Greenland NEEM-2011-S1 Ice Core from 71 to 408m depth (~270-1961 CE). Methane concentrations analysed online by laser spectrometer (SARA, Spectroscopy by Amplified Resonant Absorption, developed at Laboratoire Interdisciplinaire de Physique, Grenoble, France) on gas extracted from an ice core processed using a continuous melter system (Desert Research Institute). Methane data have a 5 second integration time (raw data acquisition rate 0.6 Hz). Analytical precision, from Allan Variance test, is 0.9 ppb (2 sigma). Long-term reproducibility is 2.6% (2 sigma). Gaps in the record are due to problems during online analysis. Online analysis conducted August-September 2011.Note: Lat-Long provided is for main NEEM borehole. The NEEM-2011-S1 core was drilled 200 m distance away in 2011 to 410 m depth.Methane concentrations are reported on NOAA2004 scale (instrument calibrated on dry synthetic air standards).A correction factor of 1.079 has been applied to all data to correct for methane dissolution in melted ice core sample prior to gas extraction. Correction factor calculated using empirical data (concentrations not aligned/tied to existing discrete methane measurements).Additional methods description provided in:* Stowasser, C., Buizert, C., Gkinis, V., Chappellaz, J., Schupbach, S., Bigler, M., Fain, X., Sperlich, P., Baumgartner, M., Schilt, A., Blunier, T., 2012. Continuous measurements of methane mixing ratios from ice cores. Atmos. Meas. Tech. 5, 999-1013.* Morville, J., Kassi, S., Chenevier, M., Romanini, D., 2005. Fast, low-noise, mode bymode, cavity-enhanced absorption spectroscopy by diode-laser self-locking. Appl. Phys. B Lasers Opt. 80, 1027-01038.* NEEM (North Greenland Eemian Ice Drilling) project information http://neem.dk/
description: NEEM-2011-S1 CH4 no outliers.Data minus data points exceeding cut-off value. Cut-off value is 2*median absolute deviation (MAD)&gt; 15 yr running median. Different MAD values used for 250-1000 AD and 1100-1835 AD sections of record.
DOI: 10.1594/pangaea.899038
title: Methane in NEEM-2011-S1 ice core from North Greenland, 1800 years continuous record: outliers, v2

description: Description and NotesDescription: Methane concentration from the Greenland NEEM-2011-S1 Ice Core from 71 to 408m depth (~270-1961 CE). Methane concentrations analysed online by laser spectrometer (SARA, Spectroscopy by Amplified Resonant Absorption, developed at Laboratoire Interdisciplinaire de Physique, Grenoble, France) on gas extracted from an ice core processed using a continuous melter system (Desert Research Institute). Methane data have a 5 second integration time (raw data acquisition rate 0.6 Hz). Analytical precision, from Allan Variance test, is 0.9 ppb (2 sigma). Long-term reproducibility is 2.6% (2 sigma). Gaps in the record are due to problems during online analysis. Online analysis conducted August-September 2011.Note: Lat-Long provided is for main NEEM borehole. The NEEM-2011-S1 core was drilled 200 m distance away in 2011 to 410 m depth.Methane concentrations are reported on NOAA2004 scale (instrument calibrated on dry synthetic air standards).A correction factor of 1.079 has been applied to all data to correct for methane dissolution in melted ice core sample prior to gas extraction. Correction factor calculated using empirical data (concentrations not aligned/tied to existing discrete methane measurements).Additional methods description provided in:* Stowasser, C., Buizert, C., Gkinis, V., Chappellaz, J., Schupbach, S., Bigler, M., Fain, X., Sperlich, P., Baumgartner, M., Schilt, A., Blunier, T., 2012. Continuous measurements of methane mixing ratios from ice cores. Atmos. Meas. Tech. 5, 999-1013.* Morville, J., Kassi, S., Chenevier, M., Romanini, D., 2005. Fast, low-noise, mode bymode, cavity-enhanced absorption spectroscopy by diode-laser self-locking. Appl. Phys. B Lasers Opt. 80, 1027-01038.* NEEM (North Greenland Eemian Ice Drilling) project information http://neem.dk/
description: NEEM-2011-S1 CH4 outliers.Data points removed from dataset according to specified cut-off value.Please refer to Rhodes et al. (2013) for full discussion of origins outlying data points. Briefly, these high frequency features are not artifacts of the continuous method and have been replicated by traditional discrete analyses. Comparison to chemistry measurements suggests they are related to biological in situ production of methane.
DOI: 10.1594/pangaea.899039
title: Methane in NEEM-2011-S1 ice core from North Greenland, 1800 years continuous record: 5 year median, v2

description: Description and NotesDescription: Methane concentration from the Greenland NEEM-2011-S1 Ice Core from 71 to 408m depth (~270-1961 CE). Methane concentrations analysed online by laser spectrometer (SARA, Spectroscopy by Amplified Resonant Absorption, developed at Laboratoire Interdisciplinaire de Physique, Grenoble, France) on gas extracted from an ice core processed using a continuous melter system (Desert Research Institute). Methane data have a 5 second integration time (raw data acquisition rate 0.6 Hz). Analytical precision, from Allan Variance test, is 0.9 ppb (2 sigma). Long-term reproducibility is 2.6% (2 sigma). Gaps in the record are due to problems during online analysis. Online analysis conducted August-September 2011.Note: Lat-Long provided is for main NEEM borehole. The NEEM-2011-S1 core was drilled 200 m distance away in 2011 to 410 m depth.Methane concentrations are reported on NOAA2004 scale (instrument calibrated on dry synthetic air standards).A correction factor of 1.079 has been applied to all data to correct for methane dissolution in melted ice core sample prior to gas extraction. Correction factor calculated using empirical data (concentrations not aligned/tied to existing discrete methane measurements).Additional methods description provided in:* Stowasser, C., Buizert, C., Gkinis, V., Chappellaz, J., Schupbach, S., Bigler, M., Fain, X., Sperlich, P., Baumgartner, M., Schilt, A., Blunier, T., 2012. Continuous measurements of methane mixing ratios from ice cores. Atmos. Meas. Tech. 5, 999-1013.* Morville, J., Kassi, S., Chenevier, M., Romanini, D., 2005. Fast, low-noise, mode bymode, cavity-enhanced absorption spectroscopy by diode-laser self-locking. Appl. Phys. B Lasers Opt. 80, 1027-01038.* NEEM (North Greenland Eemian Ice Drilling) project information http://neem.dk/
description: NEEM-2011-S1 CH4 5 yr medians.Median CH4 concentrations for 5 year time slices of 'NEEM-2011-S1 no outliers'This can be utilised as a time series of atmospheric methane concentration because the influence of outliers and other high frequency features (that could not survive firn smoothing processes is removed.
DOI: 10.1594/pangaea.899150
title: Beta activity of firn core RID-76 from Roosevelt Island drilled in austral summer 1976/77
DOI: 10.1594/pangaea.899152
title: Beta activity of firn core RID-75 from Roosevelt Island drilled in austral summer 1974/75
DOI: 10.1594/pangaea.900750
title: Volcanic synchronization GISP2 versus NEEM(2011-S1) on the NS1-2011 timescale

description: The core depths for GISP2 and the NEEM(2011S1) ice cores for 92 common volcanic deposition events derived from volcanic synchronization of the GISP2 sulphate record against the NEEM(2011-S1) sulphur ice-core record on the NS1-2011 timescale. See Figs. S1-S3, https://doi.org/10.5194/essd-9-809-2017-supplement.
DOI: 10.1594/pangaea.901844
title: Stacked annualized forward-diffused isotopic values of Renland icecores
DOI: 10.1594/pangaea.901845
title: Annualized forward-diffused isotopic values of icecore RECAP 2015
DOI: 10.1594/pangaea.901846
title: Annualized forward-diffused isotopic values of icecore 1988 M
DOI: 10.1594/pangaea.901848
title: Annualized forward-diffused isotopic values of icecore 1988 S
DOI: 10.1594/pangaea.902709
title: (Table S08) Alignment tie-points for sediment core SU81-18

description: The SST records from original publications were aligned to NGRIP ice δ18O (Andersen et al., 2006; Rasmussen et al., 2006; Svensson et al., 2006; Vinther et al., 2006) using the AnalySerie software (Paillard et al., 1996).
DOI: 10.1594/pangaea.904159
title: Foraminifera and ice rafted debris concentrations and accumulations of deep-sea sediment core GS16-204-22CC
DOI: 10.1594/pangaea.906913
title: (Figure 1) Dust concentration measurements in RECAP ice core
DOI: 10.1594/pangaea.903936
title: Foraminifera and ice rafted debris concentrations and accumulations of deep-sea sediment core GS16-204-22CC
DOI: 10.1594/pangaea.904011
title: Raw AMS 14C ages, ca. 67 to 25 ka, of deep-sea sediment core GS16-204-22CC
DOI: 10.1594/pangaea.904015
title: Stable isotopes of deep-sea sediment core GS16-204-22CC
DOI: 10.1594/pangaea.904033
title: Planktonic foraminifera and lithic grain accumulations of sediment core PS2644-5
DOI: 10.1594/pangaea.906096
title: Location and neodymium and strontium isotope compositions of samples collected from possible dust source areas, central East Greenland
DOI: 10.1594/pangaea.906109
title: Tie points for RECAP GICC05modelext Time Scale (version 1/3-2018)

description: References:GICC05: Wolff et al. 2010Renland 1988: Vinther et al. 2008
DOI: 10.1594/pangaea.906111
title: Methane record in RECAP ice core 108-121 ka BP
DOI: 10.1594/pangaea.906113
title: d15N and d18Oair in RECAP ice core (120-121 ka b2k)

description: Column #6 shows all measurements of d18Oair and column #5 shows only the data used to make the timescale selected on the basis of containing "normal" values of d15N (column #4).
DOI: 10.1594/pangaea.905445
title: Holocene temperature reconstructions for northeastern North America and the northwestern Atlantic, core A84/A87
DOI: 10.1594/pangaea.906915
title: (Figure 1) Dust concentration measurements in RECAP ice core, large particles (8.13–10.5 μm)
DOI: 10.1594/pangaea.906916
title: (Figure 1) Dust concentration measurements in RECAP ice core, small particles (1.25–10.5 μm)
DOI: 10.1594/pangaea.906927
title: (Figure 2) Depth intervals of the bags used for the Coulter Counter measurements

description: The size distributions shown in Figure 2 are means of the Holocene and glacial samples.
DOI: 10.1594/pangaea.906928
title: (Figure 2) Dust size distribution measurements in RECAP ice core, Holocene

description: For depth intervals of the bags used for the Coulter Counter measurements see doi:10.1594/PANGAEA.906927.
DOI: 10.1594/pangaea.906929
title: (Figure 2) Dust size distribution measurements in RECAP ice core, remote Holocene

description: For depth intervals of the bags used for the Coulter Counter measurements see doi:10.1594/PANGAEA.906927.
DOI: 10.1594/pangaea.906930
title: (Figure 2) Dust size distribution measurements in RECAP ice core, glacial

description: For depth intervals of the bags used for the Coulter Counter measurements see doi:10.1594/PANGAEA.906927.
DOI: 10.1594/pangaea.906959
title: (Figure 3) Dust concentration measurements in RECAP ice core, Eemian
DOI: 10.1594/pangaea.906961
title: (Figure 3) Dust concentration measurements in RECAP ice core, Holocene
DOI: 10.1594/pangaea.906964
title: (Figure 3) Dust concentration supporting measurements in RECAP ice core using Coulter Counter
DOI: 10.1594/pangaea.911434
title: Age determination for borehole PRGL1-4 from the Gulf of Lion, Mediterranean Sea

description: This age model is an update and extension of previously published PRGL1-4 age model from Sierro et al., 2009
DOI: 10.1594/pangaea.917602
title: Elevation zones Hallstätter Gletscher, Dachstein, Austria, 2018/2019

description: The annual glacier mass balance of Hallstätter Gletscher in Austria is measured since 1.10.2006 with the direct glaciological method in the fixed date system (1.10. to 30. 09. of the following year). The accumulation of snow is measured by determination of the water equivalent in 6 snow pits, the ice ablation is measured with 15 stakes drilled into the ice. Results are the annual net mass balance in kg, the total accumulation and ablation, the glacier area and the portions of the area which are subject to ablation and accumulation, the elevation of the equilibrium line and the specific mass balance in kg/m² (= mm w.e.). The accumulation during the winter is determined by the 1 May.The project is funded by the Federal Government of Upper Austria. The measurements are carried out the Institute for Interdisciplinary Mountain Research of the Austrian Academy of Sciences and the company Blue Sky in Gmunden, Austria.
DOI: 10.1594/pangaea.917603
title: Elevation zones Jamtalferner, Silvretta, Austria, 2018/2019

description: The glacier mass balance of Jamtalferner has been measured annually since 1988/1989 with the direct/glaciological method. Winter mass balance has been determined for 1 May in all years. The mass balance records are complemented by precipitation measurements at a gauge close to the glacier tongue and climate data recorded at the village of Galtür. The project is supported by the Federal Government of Tyrol. Research results are also provided within the Environmental Education Centre Jamtal (http://www.umweltbildung-jamtal.info/).