cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.18739/a2wm13t76
title: Greenland root phenology: warming and herbivory

description: Data on root and shoot phenology. Plots were were warmed with open top chambers and herbivores were excluded in a fully factorial design. This data was used in the publication of L. Radville, D.M. Eissenstat, and E. Post, Climate Change Responses 2016.
DOI: 10.15468/dl.38eq5y
title: Occurrence Download

description: A dataset containing 19 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "TaxonKey is one of (Nannoglottis delavayi (Franch.) Y.Ling & Y.L.Chen)"
 ]
}

 The dataset includes 19 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027674-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a2hd7ns94
title: Permafrost peat plateau core data: Beretta - MRB13_03

description: This package contains permafrost peat plateau core data from the paper: Sensitivity of Northern Peatland Carbon Dynamics to Holocene Climate Change.
The goal is to evaluate the long-term climate sensitivity and global carbon (C)
cycle implications of northern peatland C dynamics by synthesizing available data
and providing a conceptual framework for understanding the dominant controls,
processes, and interactions of peatland initiation and C accumulation.
Permafrost peat plateau core data of organic matter, nitrogen and carbon accumulation rates at different core level in this package were collected with a box corer (active layer) and gas-powered diamond-tipped drill (permafrost) for study of Arctic carbon accumulation during the Holocene.
DOI: 10.5281/zenodo.14163899
title: mapPat Input Tables Updates

description: Precomputed input tables for mapPat. Updated periodically. mapPat is available at: GitHub.
DOI: 10.5281/zenodo.14163900
title: mapPat Input Tables Updates

description: Precomputed input tables for mapPat. Updated periodically. mapPat is available at: GitHub.
DOI: 10.5281/zenodo.14202596
title: mapPat Input Tables Updates

description: Precomputed input tables for mapPat. Updated periodically. mapPat is available at: GitHub.
DOI: 10.18739/a27w67605
title: Permafrost peat plateau core data: Pontoon - MRB13_05

description: This package contains permafrost peat plateau core data from the paper: Sensitivity of Northern Peatland Carbon Dynamics to Holocene Climate Change.
The goal is to evaluate the long-term climate sensitivity and global carbon (C)
cycle implications of northern peatland C dynamics by synthesizing available data and providing a conceptual framework for understanding the dominant controls, processes, and interactions of peatland initiation and C accumulation.
Permafrost peat plateau core data of organic matter, nitrogen and carbon accumulation rates at different core level in this package were collected with a box corer (active layer) and gas-powered diamond-tipped drill (permafrost) for study of Arctic carbon accumulation during the Holocene.
DOI: 10.15468/dl.fejruv
title: Occurrence Download

description: A dataset containing 34383 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Euphorbia esula L.)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 2000"
 ]
}

 The dataset includes 34383 records from 416 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027673-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a2cn6z04x
title: Permafrost peat plateau core data: Lac Levis - MRB13_08

description: This package contains permafrost peat plateau core data from the paper: Sensitivity of Northern Peatland Carbon Dynamics to Holocene Climate Change.
The goal is to evaluate the long-term climate sensitivity and global carbon (C)
cycle implications of northern peatland C dynamics by synthesizing available data and providing a conceptual framework for understanding the dominant controls, processes, and interactions of peatland initiation and C accumulation.
Permafrost peat plateau core data of organic matter, nitrogen and carbon accumulation rates at different core level in this package were collected with a box corer (active layer) and gas-powered diamond-tipped drill (permafrost) for study of Arctic carbon accumulation during the Holocene.
DOI: 10.18739/a2445hc6q
title: Permafrost peat plateau core data: Caribou - MRB13_04

description: This package contains permafrost peat plateau core data from the paper: Sensitivity of Northern Peatland Carbon Dynamics to Holocene Climate Change.
The goal is to evaluate the long-term climate sensitivity and global carbon (C)
cycle implications of northern peatland C dynamics by synthesizing available data
and providing a conceptual framework for understanding the dominant controls,
processes, and interactions of peatland initiation and C accumulation.
Permafrost peat plateau core data of organic matter, nitrogen and carbon accumulation rates at different core level in this package were collected with a box corer (active layer) and gas-powered diamond-tipped drill (permafrost) for study of Arctic carbon accumulation during the Holocene.
DOI: 10.18739/a20c4sk32
title: Permafrost peat plateau core data: Ursus - MRB13_06

description: This package contains permafrost peat plateau core data from the paper: Sensitivity of Northern Peatland Carbon Dynamics to Holocene Climate Change. The goal is to evaluate the long-term climate sensitivity and global carbon (C)
cycle implications of northern peatland C dynamics by synthesizing available data and providing a conceptual framework for understanding the dominant controls, processes, and interactions of peatland initiation and C accumulation.
Permafrost peat plateau core data of organic matter, nitrogen and carbon accumulation rates at different core level in this package were collected with a box corer (active layer) and gas-powered diamond-tipped drill (permafrost) for study of Arctic carbon accumulation during the Holocene.
DOI: 10.18739/a2vq2s99t
title: Network of permafrost temperature observations in Russia, 2018-2019.

description: This work coordinates data collection using standard equipment and protocols at the Alaskan and Russian borehole sites. These borehole temperature data sets provide the baseline to reconstruct past surface temperatures, to assess the future rates of change in near-surface permafrost temperatures and permafrost boundaries, and to provide spatial data for validation of climate scenario models and temperature reanalysis approaches. This represents the Russia contribution to the ongoing activities of Global Terrestrial Network for Permafrost that obtains temperatures in a large number of globally distributed boreholes in order to provide a snapshot of permafrost temperatures in both time and space. Included are files with the depth, temperature, and date of soil sampled at a number of sites. Site information (site name, latitude, longitude) by file name can be found in the file 'metadata.csv'.
DOI: 10.18739/a2qz22h6j
title: Gridded conduit floor and roof

description: A 1 cm gridded data set of ~9 m of subglacial conduit.
DOI: 10.18739/a2m61bq36
title: Radiocarbon ages of subfossil plants, northwest Greenland

description: This dataset includes sample information and metadata for radiocarbon ages of organic remains collected in northwest Greenland during summers 2012 and 2014. There are 60 ages of subfossil plant remains that have been recently exposed at the margins of the Greenland Ice Sheet and North Ice Cap. 6 ages are of subfossil plant remains transported along shear planes in the Greenland Ice Sheet margin near Thule Air Base. 2 ages are of subfossil plant remains transported along shear planes in the Greenland Ice Sheet margin in Nuntarssuaq. 24 ages are of subfossil plant remains in situ, recently exposed by the receding Greenland Ice Sheet margin in Nunatarssuaq. 7 ages are of subfossil plant remains transported along shear planes in the North Ice Cap margin in Nuntarssuaq. 16 ages are of subfossil plant remains in situ, recently exposed by the receding North Ice Cap margin in Nunatarssuaq. 1 age is of subfossil plant remains in situ, recently exposed by the receding the Tunnel Glacier margin in Nunatarssuaq. 4 ages are of plant remains in sediment cores from BEMEWS lake, near Thule Air Base. Data reported are direct radiocarbon measurements made at the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility. Columns 16 and 17 contain sample latitudes and longitudes, and samples 18 and 19 contain general sample locations and whether samples occurred in situ or not.
DOI: 10.18739/a2gf0mw8z
title: Concentration of gas-phase NO/NOy and BrO in the boundary layer at Summit Station, Greenland

description: This dataset contains in-situ measured bromine monoxide (BrO), nitric oxide (NO) and total reactive nitrogen (NOy) in the boundary layer of Summit Station, Greenland, in the summers of 2010 and 2011. BrO was measured with the chemical ionization mass spectrometry (CIMS). NO/NOy was measured with chemiluminescence.
DOI: 10.18739/a2bn9x34p
title: Isotopic composition of nitrate in atmospheric mist chamber samples

description: We operated the University of New Hampshire (UNH) dual channel mist chamber/ion chromatography system at Summit to measure soluble gases, focusing on soluble bromide and nitric acid and nitrous acid. This system and operational details are described in Dibb et al., 2010, Liao et al., 2012 discuss lab experiments that establish the inorganic bromine compounds contributing to the bromide measured by this technique. Excess sample, not needed for IC analysis, was saved in HDPE bottle for later isotopic analysis.
DOI: 10.18739/a26w9690x
title: ATDD/Tower_Data_And_Fluxes

description: This dataset contains the measurements from the NOAA/ATDD Tower that was set up in conjunction with this research. They contain the primary flux and met data and are formatted for the euroflux gapfilling tool.
DOI: 10.18739/a2348gg7z
title: Divergent Patterns of Recent Sea Ice Cover across the Bering, Chukchi, and Beaufort Seas of the Pacific Arctic Region

description: Over the past three decades of the observed satellite record, there have been significant changes in sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic Region (PAR). Satellite data reveal that patterns in sea ice cover have been spatially heterogeneous, with significant declines in the Chukchi and Beaufort seas, yet more complex multi-year variability in the Bering Sea south of St. Lawrence Island. These patterns in the Chukchi and Beaufort seas have intensified since 2000, indicating a regime shift in sea ice cover across the northern portion of the PAR. In particular, satellite data over 1979–2012 reveal localized decreases in sea ice presence of up to -1.64 days/year (Canada Basin) and -1.24 days/year (Beaufort Sea), which accelerated to up to -6.57 days/year (Canada Basin) and -12.84 days/year (Beaufort Sea) over the 2000–2012 time period. In contrast, sea ice in the Bering Sea shows more complex multi-year variability with localized increases in sea ice presence of up to +8.41 days/year since 2000. The observed increases in sea ice cover since 2000 in the southern Bering Sea shelf region are observed in wintertime, whereas sea ice losses in the Canada Basin and Beaufort Sea have occurred during summer. In this study, we summarize the recent variability in sea ice cover across the broader PAR, including the Bering, Chukchi, and Beaufort seas. We pay particular attention to sea ice using relatively high spatial resolution (6.25 km) sea ice concentrations derived from the Advanced Microwave Scanning Radiometer for EOS (AMSR-E) sensor on the Aqua satellite platform . Based on a 15% sea ice concentration threshold to categorize sea ice as being either present or absent, annual sea ice persistence, the timing of sea ice breakup, and the timing of sea ice formation are quantified with AMSR-E data spanning 2003–2011 (up until the point of instrument failure in October 2011).
DOI: 10.18739/a2zg6g73b
title: Continuous Plutonium measurements from an array of Arctic and Antarctic ice cores

description: Atmospheric nuclear weapons testing (NWT) resulted in the injection of plutonium (Pu) into the atmosphere and subsequent global deposition. We present a new method for continuous semi-quantitative measurement of 239Pu in ice cores, which was used to develop annual records of fallout from NWT in ten ice cores from Greenland and Antarctica. The 239Pu was measured directly using an Inductively Coupled Plasma - Sector Field Mass Spectrometer, thereby reducing analysis time and increasing depth-resolution with respect to previous methods. To validate this method, we compared our one year averaged results to published 239Pu records and other records of NWT. The 239Pu profiles from four Arctic ice cores reflected global trends in NWT and were in agreement with discrete Pu profiles from lower latitude ice cores. The 239Pu measurements in the Antarctic ice cores tracked low latitude NWT, consistent with previously published discrete records from Antarctica. Advantages of the continuous 239Pu measurement method are (1) reduced sample preparation and analysis time; (2) no requirement for additional ice samples for NWT fallout determinations; (3) measurements are exactly co-registered with all other chemical, elemental, isotopic, and gas measurements from the continuous analytical system; and (4) the long half-life means the 239Pu record is stable through time.
DOI: 10.18739/a2tq5rf0p
title: 10Be sample data, northwest Greenland

description: This dataset includes sample information and metadata necessary for calculating 10Be ages of boulders and bedrock. There 42 samples that have been prepared and measured for 10Be dating. These samples were prepared at the cosmogenic nuclide laboratory at Dartmouth College and were measured at the Center for Accelerator Mass Spectrometry at Lawrence Livermore National Laboratory. The samples are arranged by site and the data provided can be used in the CRONUS-EARTH online calculator found here: http://hess.ess.washington.edu/. There are 5 samples from boulders on drift and moraines near Thule Air Base; 14 samples of boulders and bedrock exposed by deglaciation of the Greenland Ice Sheet subsequent to the Last Glacial Maximum; 7 samples of boulders on drift near Nuna Ramp in Nunatarssuaq; 3 samples of boulders on drift near the outflow of Nordso in Nunatarssuaq; 5 samples of boulders on historical drift of the Greenland Ice Sheet in Nunatarssuaq; and 8 samples of boulders on historical drift of the North Ice Cap in Nunatarssuaq.
DOI: 10.18739/a2pz51m69
title: Tutakoke Field Site Weather data 2015

description: This dataset contains climate data collected from the Tutakoke field site between May and August of 2015.
DOI: 10.18739/a2k649t10
title: Beaufort Gyre Exploration Project - Mooring D 2013-2014

description: Mooring D (2013-2014) was deployed for 413 days equipped with
bottom pressure recorder (39644 samples of pressure, and
temperature), a McLane Moored Profilers (320 profiles of
pressure,temperature, salinity and horizontal velocity), an
upward looking sonar (17831786 samples of pressure, temperature
and ice draft), and an Acoustic Doppler Current Profiler (ADCP,
9903 profiles of zonal (U) and meridional (V) velocity as well as
ice drift).
DOI: 10.18739/a2ff3m07n
title: Beaufort Gyre Exploration Project - Mooring B 2014-2015

description: Mooring B (2014-2015) was deployed for 356 days equipped with
bottom pressure recorder (34157 samples of pressure, and
temperature), a McLane Moored Profilers (which failed), an
upward looking sonar (28317280 samples of pressure, temperature
and ice draft), and an Acoustic Doppler Current Profiler (ADCP,
8562 profiles of zonal (U) and meridional (V) velocity as well as
ice drift).
DOI: 10.18739/a29p2w63h
title: COLLABORATIVE RESEARCH: Response of the Northwest Greenland Cryosphere to Holocene Climate Change

description: The aim of this collaborative project between investigators at three universities is to develop records of past climate in northwest (NW) Greenland and synthesize them with records of the position of ice margin to evaluate the response of the Greenland Ice Sheet to past warm periods, such as the Holocene Climatic Optimum (approximately 5 to 9 thousand years ago). Recent studies suggest that rapid ice loss is expanding northwards into NW Greenland, as demonstrated by the dramatic August, 2010 calving event from Petermann Glacier. However, little paleoclimate and ice sheet research has been conducted in NW Greenland, despite the proximity to a logistics center at Thule Air Base. The proposed research integrates multiple climate proxies and glaciological modeling experiments in the Thule region with the following research objectives:

1) Reconstruct Holocene climate in NW Greenland via inferences from reconstructed local ice cap extents (North Ice Cap, Tuto Ice Cap), ice core stable isotope and precipitation records, and data from nearby lake sediments. 

2) Examine the sensitivity of the NW Greenland Ice Sheet (GIS) to Holocene climate changes by developing the history of the areal extent of the GIS and synthesizing proxy data with glaciological modeling experiments to examine past GIS changes and predict future GIS retreat.

Results from the proposed research will enable a more accurate prediction of the NW Greenland cryospheric response to a future warmer world and provide information directly relevant to predictions of future sea-level rise. The investigators propose to enhance public outreach and K-12 science education through development of educational modules using simplified, web-based, climate and glaciological models. They would involve graduate and undergraduate students in field and lab research, participate in the Dartmouth Women In Science Project, and partner with the Dartmouth polar IGERT program.
DOI: 10.18739/a25x25d07
title: North Ice Cap Ice Core Chemistry

description: An ice core was collected from the summit dome (1275 m elevation) of North Ice Cap near Thule, Greenland using an IDDO Hand Auger in May of 2014. The core was hand sampled under clean conditions and analyzed for major ion concentration and stable water isotope ratios. These data suggest that the mean annual snow accumulation rate on North Ice Cap is 0.75 - 1.0 meters water equivalent based on 2012-2013. Refrozen surface meltwater represents 22% of the ice core length. Major ion concentrations are 1.9-6.8 times higher in refrozen melt layers than in the rest of the core, indicating that core chemistry is significantly distorted by elution during meltwater percolation.
DOI: 10.18739/a22804z93
title: Coast position surveys near Drew Point, Alaska from summers 2008, 2011, and 2012

description: Shapefiles and textfiles for Drew Point coast position GPS surveys from Barnhart et al (2014) Barnhart, K. R., R. S. Anderson, I. Overeem, C. Wobus, G. D. Clow, and F. E. Urban (2014), Modeling erosion of ice-rich permafrost bluffs along the Alaskan Beaufort Sea coast, J. Geophys. Res. Earth Surf., 119, 1155â 1179, doi:10.1002/2013JF002845. Contact: Katy Barnhart This dataset, described in Barnhart et al. (2014): "We surveyed the position of the top of the coastal bluff for 7 km to the east of Drew Point using a handheld GPS (Garmin Vista H) set to record position every 10 m (along-track accuracy of 1â 2 m) on 18â 21 June 2008, 5 August 2011, and 8 August 2012 (Figureâ 2)." This folder contains files for each year: 2008 2011 2013 Each contains a file and a folder 1.drewPointcoastXXXX.txt 2.drewPointcoastXXXX, a folder with a .shp, .shp, .dbf, and .proj
DOI: 10.18739/a2xg9fb52
title: Southwest Greenland Lake Mixing Experiment

description: This data set is from a whole-lake mixing experiment conducted near Kangerlussuaq, Greenland over the summers of 2013 and 2014. The primary variable manipulated was temperature structure of the lake, and the primary response variables were the abundances of specific diatom taxa. Two lakes were employed in the experiment: one that served as a control in both years with no manipulation, and another that served as the experimental lake (Lake SS16) that was not manipulated in 2013 but was manipulated in 2014. Specifically, in 2014, a Solar Bee hydraulic lift system was installed to deepen the surface, mixed warm layer from 4 to 8 m in the experimental lake. Data provided here are the daily water column temperature values as well as the integrated (5 day time steps) diatom samples from sediment traps, listed by species in common to both lakes over both years.
DOI: 10.18739/a2sq8qj0f
title: SMMR and SSM/I derived dates of Arctic sea ice surface melt/freeze

description: Yearly maps of onset of early melt (earliest observed melt conditions), melt (melt conditions observed throughout from this point until freeze), early freeze (earliest observed freeze conditions), and freeze (freeze conditions observed throughout from this point on) for the surface of sea ice derived from scanning multichannel microwave radiometer (SMMR) - special sensor microwave/imager (SSM/I) data. See [Markus et al. 2009] for further details. Original data prepared in a polar stereographic projection, with 25 km grid spacing; data has been reprojected into a northern hemispheric Equal-Area Scalable Earth (EASE) grid [see: http://nsidc.org/data/ease/ for further details] with 25 km grid spacing. Reference: Markus, T., J. C. Stroeve, and J. Miller (2009), Recent changes in Arctic sea ice melt onset, freezeup, and melt season length, J. Geophys. Res., 114, C12, doi:10.1029/2009JC005436.*****These data were compiled in conjunction with the Sunlight and the Arctic atmosphere-ice-ocean system (Synthesis of Arctic System Science, SASS) project.***** Data Citation: Eicken, H., R. Gradinger, T. Heinrichs, M. Johnson, A. Lovecraft, and M. Kaufman. (Jan. 5, 2010, Updated May 9, 2012). SMMR and SSM/I derived dates of Arctic sea ice surface melt/freeze (SIZONET). UCAR/NCAR CISL ACADIS. http://dx.doi.org/10.5065/D6KW5CXQ
DOI: 10.18739/a2nz80q5k
title: Arctic Ocean Solar Heating

description: The primary data files consist of date, grid information, incident shortwave irradiance [from ERA-40 reanalysis (1979 - 2002) and the European Centre for Medium-Range Weather Forecasts (ECMWF) (2003 -- 2008)], ice concentration from passive microwave observations interpreted using the National Aeronautics and Space Administration (NASA) team algorithm, solar heat input to the ocean determined using the equation (note*the water albedo is 0.07): [Incident solar * (1 -- water albedo) * (1 -- ice concentration)], and cumulative annual solar input to the ocean (sum of daily values). The region of interest includes the Central Arctic and peripheral seas. Data is on a 25 x 25 km Equal-Size Scalable Earth (EASE) grid. Daily values are reported at each grid cell from 1979 to 2008. The data file structure is monthly netcdf files with daily data. *****These data were compiled in conjunction with the Sunlight and the Arctic atmosphere-ice-ocean system (Synthesis of Arctic System Science, SASS) project.***** Data Citation: Eicken, H., R. Gradinger, T. Heinrichs, M. Johnson, A. Lovecraft, and M. Kaufman. (Dec 22, 2009, Updated May 9, 2012). Arctic Ocean Solar Heating (SIZONET). UCAR/NCAR -- CISL -- ACADIS. http://dx.doi.org/10.5065/D6QN64NF
DOI: 10.18739/a2df6k37d
title: 2011-2012 Field deployment data in Arctic Lakes in Northwest Territories, Canada

description: Time series data from sensors and water samplers deployed as OsmoSamplers in three aquatic settings (Manta Lake, Swiss Cheese Lake, and Seep 3) in the outer delta of the Middle Channel of the Mackenzie River, Northwest Territories, Canada, from October 2011-June 2012.