cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.18739/a2v698c90
title: Lake ice thickness and snow depth, Alaska, Spring 2019 and Winter 2020.

description: The motivation of this study was to gather direct measurements of lake ice thickness to support geophysical and remote sensing observations of lake ice properties. Ice thickness measured directly using auger holes and tape measure, and snow depth measured using probe. For each measurement location, a 5 centimeter (cm) ice auger drill was used to install a hole though the lake ice, and a weighted tape measure was used to measure ice thickness to the nearest cm. Measurements were conducted during the spring of 2019 and winter of 2020 on the North Slope of Alaska (AK) and in the Fairbanks, AK region.
DOI: 10.18739/a2qf8jk5v
title: A contrast of plant species richness and density on moss and peat in Churchill, Canada, 2006-2007.

description: The relative frequencies of plants associated with the moss Dicranum elongatum or peat substrate at Churchill, Canada plateaus and other habitats. Vegetation was surveyed in the short growing seasons of 2006 and 2007 near Churchill Northern Studies Center to explore the relative importance of moss versus peat. Small flexible rings were placed on moss cushions then on the open peat. The total number of individual plants and number of unique species was recorded on each substrate. The primary habitat in tundra is comprised of peat plateau. Other habitats there were censused included coastal floodplain, shoreline, forest carex, and open forest gaps.
DOI: 10.18739/a2kp7ts1q
title: Cryostratigraphy and ground-ice content of the upper permafrost in drained-lake basins, northern Alaska, April-May 2019

description: This dataset contains information on cryostratigraphy and ground-ice content of the upper permafrost , which was based on the results of field work in the Utqiagvik (former Barrow, Western Coastal Plain [CPW]), Teshekpuk Lake (Central Coastal Plain [CPC]), Inigok (Sand Sea [SS] and Loess Belt [LB]), Oumalik (LB), and Atqasuk (LB) study areas, northern Alaska (April 16 - May 2, 2019). Cryostratigraphy was studied mainly in drained-lakes basins (DLB); several boreholes were drilled at the primary surface of the Arctic Coastal Plain (CPC and SS) and yedoma surface (LB). A total of 28 boreholes were drilled through the frozen active layer and the upper permafrost, 19 of them were drilled in DLB, 6 – at the main surface near weather stations, and 3 – in the Pik dunes area. Permafrost drilling was performed with the SIPRE corer. Entire cores were described and photographed in the field, and more than 33 meters of frozen cores were delivered to the University of Alaska Fairbanks cold room for additional descriptions and analyses (carbon-14, ice content). During the lab study of the cores, more than 200 samples were taken for evaluation of ice content (including gravimetric and volumetric moisture content, excess-ice content) of frozen soils. The dataset includes cryostratigraphic descriptions, ice-content values, and photographs of the frozen cores obtained from 28 boreholes.
DOI: 10.18739/a2fx73z7b
title: Atmospheric tracers for Arctic wildfires, air pollution, atmospheric chemistry, and climate change at GEOSummit, Greenland, since 2018

description: There has been an unprecedented increase in Arctic wildfire occurrences in recent years. This Arctic Observing Network (AON) project focuses on the study of Arctic tundra wildfires through continuous observations of atmospheric fire tracers, including carbon monoxide, methane, and a series of volatile organic compounds (VOCs) monitored at the Greenland Environmental Observatory at Summit (GEOSummit). Observations will be applied in modeling research to simulate Arctic wildfires, and to assess climate-change induced increase in Arctic wildfires and their feedbacks on the Arctic environment. This dataset is an archive of methane, carbon monoxide, carbon dioxide, and VOCs (ethane, propane, iso-butane, n-butane, acetylene, iso-pentane, n-pentane, n-hexane, benzene, toluene) ambient air mixing ratios collected at GEOSummit since 2018. We aim to update this dataset regularly.
DOI: 10.15468/dl.g5xspv
title: Occurrence Download

description: A dataset containing 180 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Nephotettix virescens (Distant, 1908)"
 ]
}

 The dataset includes 180 records from 14 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027804-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a2b56d54d
title: Electron backscatter diffraction data for polycrystalline ice test specimen S20NOV1D, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.18739/a26d5pc08
title: Electron backscatter diffraction data for polycrystalline ice test specimen S01MAR13B, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.15468/dl.mqw5nk
title: Occurrence Download

description: A dataset containing 2359 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Lynx pardinus (Temminck, 1827)"
 ]
}

 The dataset includes 2359 records from 31 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027805-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a22r3nx8b
title: Electron backscatter diffraction data for polycrystalline ice test specimen S22OCT12G, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.15468/dl.br85nw
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON ((36.90833 2.761278, 36.90763 2.760833, 36.90833 2.760833, 36.90833 2.761278))",
 "TaxonKey is Mammalia"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027806-241107131044228/datasets/export for details.
DOI: 10.18739/a2z02z93p
title: Electron backscatter diffraction data for polycrystalline ice test specimen S11DEC12E, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.5255/ukda-sn-857466
title: An Extension of Trust and Technology Acceptance Model with Theory of Planned Behavior in the Adoption of Digital Payment: An Empirical Study in Vietnam, 2023-2024

description: Electronic payment (e-payment), also referred to as online payment, has become a widely adopted transaction model across numerous countries. In many regions, the reliance on cash has significantly diminished as individuals increasingly utilize electronic devices such as smartphones and computers to perform financial transactions over the Internet. E-payment systems enable users to carry out a variety of operations, including depositing, transferring, and withdrawing funds. These transactions are often completed swiftly, enhancing efficiency and saving time for users. In developed countries worldwide, electronic payment has emerged as a predominant payment method, accounting for over 90% of daily individual transactions. Aligned with global development trends, e-payments in Vietnam emerged in 2008 and have since experienced significant growth. The Vietnamese government has implemented various programs, projects, and initiatives to promote the development of e-payments, such as the "National Strategy for the Development of Digital Economy and Digital Society to 2025, orientation to 2030" and the "Project on Development of Non-cash Payment in Vietnam in the 2021-2025 period"... However, e-payments in our country still face numerous challenges, especially in the highlands and mountainous regions, where education is low, technological infrastructure is underdeveloped, and cash payment rates remain very high... Therefore, this study aims to achieve the main objectives: Identify and analyze factors affecting the use of e-payment methods in household consumption in the Northern Mountainous region of Vietnam.
DOI: 10.18739/a2t727g99
title: Electron backscatter diffraction data for polycrystalline ice test specimen S11DEC12C, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.18739/a2pg1hp55
title: Electron backscatter diffraction data for polycrystalline ice test specimen S22OCT12E, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.18739/a2dz0328j
title: Electron backscatter diffraction data for polycrystalline ice test specimen S27FEB13D, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.18739/a2jq0sw11
title: Electron backscatter diffraction data for polycrystalline ice test specimen S22OCT12C, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.18739/a29882n7g
title: Electron backscatter diffraction data for polycrystalline ice test specimen S22OCT12B, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.18739/a25h7bv3b
title: Electron backscatter diffraction data for polycrystalline ice test specimen S27FEB13B, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.18739/a21r6n190
title: Electron backscatter diffraction data for polycrystalline ice test specimen S11DEC12B, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.18739/a2x05xd4x
title: Electron backscatter diffraction data for polycrystalline ice test specimen S20NOV12B, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.18739/a2s756m05
title: Electron backscatter diffraction data for polycrystalline ice test specimen S01FEB13A, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.18739/a2ng4gs6d
title: Electron backscatter diffraction data for polycrystalline ice test specimen S11JAN13B, 2010-2015.

description: EBSD data from crept polycrystalline lab ice
DOI: 10.18739/a2hq3s035
title: Strain Rate Data on polycrystalline ice, United States, 2010-2015

description: Strain rate data on polycrystalline ice
DOI: 10.5281/zenodo.14202689
title: cGenie Simulations

description: Three bifurcation of the AMOC experiments performed with the cGenie model. 

 



Bifurcation experiment of the AMOC with a CO2 forcing over 40 000 years spanning concentration from 280 ppm in the atmosphere up to 2800 ppm and then back to 280 ppm in a tent function. 

Bifurcation experiment of the AMOC with a freshwater foring and a constant CO2 forcing. One hosing is addded from -0.2 Sv up to 0.3 Sv and then back to -0.2 Sv  in a tent function over 20 000 years. The freshwater is added between 50°N - 70°N and 45°W and 5°E with constant salinity over the global ocean. 

Bifurcation experiment of the AMOC with a freshwater foring and a constant CO2 forcing. One hosing is addded from -0.2 Sv up to 0.3 Sv and then back to -0.2 Sv  in a tent function over 20 000 years. The freshwater is added between 20°N - 50°N and across the Atlantic ocean with constant salinity over the global ocean.
DOI: 10.5281/zenodo.14202690
title: cGenie Simulations

description: Three bifurcation of the AMOC experiments performed with the cGenie model. 

 



Bifurcation experiment of the AMOC with a CO2 forcing over 40 000 years spanning concentration from 280 ppm in the atmosphere up to 2800 ppm and then back to 280 ppm in a tent function. 

Bifurcation experiment of the AMOC with a freshwater foring and a constant CO2 forcing. One hosing is addded from -0.2 Sv up to 0.3 Sv and then back to -0.2 Sv  in a tent function over 20 000 years. The freshwater is added between 50°N - 70°N and 45°W and 5°E with constant salinity over the global ocean. 

Bifurcation experiment of the AMOC with a freshwater foring and a constant CO2 forcing. One hosing is addded from -0.2 Sv up to 0.3 Sv and then back to -0.2 Sv  in a tent function over 20 000 years. The freshwater is added between 20°N - 50°N and across the Atlantic ocean with constant salinity over the global ocean.
DOI: 10.18739/a2d21rk15
title: Global polycyclic aromatic hydrocarbons (PAHs) and future climate and emissions, 2000-2050

description: We investigate effects of 2000-2050 emissions and climate
changes on the atmospheric transport of three polycyclic aromatic hydro-
carbons (PAHs): phenanthrene (PHE), pyrene (PYR), and benzo[a]pyrene
(BaP). We use the GEOS-Chem model coupled to meteorology from a general
circulation model and focus on impacts to northern hemisphere midlatitudes
and the Arctic. We project declines in anthropogenic emissions (up to 20%)
and concentrations (up to 37%), with particle-bound PAHs declining more,
and greater declines in midlatitudes versus the Arctic. Climate change causes
relatively minor increases in midlatitude concentrations for the more volatile
PHE and PYR (up to 4%) and decreases (3%) for particle-bound BaP. In the
Arctic, all PAHs decline slightly under future climate (up to 2%). Overall, we
observe a small 2050 "climate penalty" for volatile PAHs and "climate benefit"
for particle-bound PAHs. The degree of penalty or benefit depends on
competition between deposition and surface-to-air fluxes of previously
deposited PAHs. Particles and temperature have greater impacts on future transport than oxidants, with particle changes alone accounting for 15% of BaP decline under 2050 emissions. Higher temperatures drive increasing surface-to-air fluxes that cause PHE and PYR climate penalties. Simulations suggest ratios of more-to-less volatile species can be used to diagnose signals of climate versus emissions and that these signals are best observed in the Arctic.
DOI: 10.6084/m9.figshare.27888888
title: Supplementary Table 3

description: <b>Supplementary Table 3. Baseline characteristics of enrolled patients in vitamin D insufficient and sufficient group split by X-tile</b>
DOI: 10.6084/m9.figshare.27888888.v1
title: Supplementary Table 3

description: <b>Supplementary Table 3. Baseline characteristics of enrolled patients in vitamin D insufficient and sufficient group split by X-tile</b>
DOI: 10.18739/a28911r7s
title: Polycyclic aromatic hydrocarbons (PAHs) and secondary organic aerosol (SOA) versus primary carbonaceous aerosols, 2006-2008

description: We use the chemical transport model GEOS-
Chem to evaluate the hypothesis that atmospheric polycyclic
aromatic hydrocarbons (PAHs) are trapped in secondary
organic aerosol (SOA) as it forms. We test the ability of three
different partitioning configurations within the model to
reproduce observed total concentrations in the midlatitudes
and the Arctic as well as midlatitude gas-particle phase
distributions. The configurations tested are (1) the GEOS-
Chem default configuration, which uses instantaneous
equilibrium partitioning to divide PAHs among the gas
phase, a primary organic matter (OM) phase (absorptive),
and a black carbon (BC) phase (adsorptive), (2) an SOA configuration in which PAHs are trapped in SOA when emitted and slowly evaporate from SOA thereafter, and (3) a configuration in which PAHs are trapped in primary OM/BC upon emission and subsequently slowly evaporate. We also test the influence of changing the fraction of PAHs available for particle-phase oxidation. Trapping PAHs in SOA particles upon formation and protecting against particle-phase oxidation (2) better simulates observed remote concentrations compared to our default configuration (1). However, simulating adsorptive partitioning to BC is required to reproduce the magnitude and seasonal pattern of gasâ particle phase distributions. Thus, the last configuration (3) results in the best agreement between observed and simulated concentration/phase distribution data. The importance of BC rather than SOA to PAH transport is consistent with strong observational evidence that PAHs and BC are coemitted.
DOI: 10.18739/a24j09z3n
title: Thackray 2015 Quantitative Uncertainty polycyclic aromatic hydrocarbon (PAH) metadata, 2006-2008.

description: We quantitatively examine the relative importance of uncertainty in emissions and physicochemical properties (including reaction rate constants) to Northern Hemisphere (NH) and Arctic polycyclic aromatic hydrocarbon (PAH) concentrations, using a computationally efficient numerical uncertainty technique applied to the global-scale chemical transport model GEOS-Chem. Using polynomial chaos (PC) methods, we propagate uncertainties in physicochemical properties and emissions for the PAHs benzo[a]pyrene, pyrene and phenanthrene to simulated spatially resolved concentration uncertainties. We find that the leading contributors to parametric uncertainty in simulated concentrations are the black carbon-air partition coefficient and oxidation rate constant for benzo[a]pyrene, and the oxidation rate constants for phenanthrene and pyrene. NH geometric average concentrations are more sensitive to uncertainty in the atmospheric lifetime than to emissions rate. We use the PC expansions and measurement data to constrain parameter uncertainty distributions to observations. This narrows a priori parameter uncertainty distributions for phenanthrene and pyrene, and leads to higher values for OH oxidation rate constants and lower values for European PHE emission rates.
 Additional metadata can be found via: Thackray et al. DOI: 10.1021/acs.est.5b01823
DOI: 10.18739/a20r9m49r
title: Quantitative Uncertainty polycyclic aromatic hydrocarbon (PAH) metadata, 2006-2008.

description: We quantitatively examine the relative importance of uncertainty in emissions and physicochemical properties (including reaction rate constants) to Northern Hemisphere (NH) and Arctic polycyclic aromatic hydrocarbon (PAH) concentrations, using a computationally efficient numerical uncertainty technique applied to the global-scale chemical transport model GEOS-Chem. Using polynomial chaos (PC) methods, we propagate uncertainties in physicochemical properties and emissions for the PAHs benzo[a]pyrene, pyrene and phenanthrene to simulated spatially resolved concentration uncertainties. We find that the leading contributors to parametric uncertainty in simulated concentrations are the black carbon-air partition coefficient and oxidation rate constant for benzo[a]pyrene, and the oxidation rate constants for phenanthrene and pyrene. NH geometric average concentrations are more sensitive to uncertainty in the atmospheric lifetime than to emissions rate. We use the PC expansions and measurement data to constrain parameter uncertainty distributions to observations. This narrows a priori parameter uncertainty distributions for phenanthrene and pyrene, and leads to higher values for OH oxidation rate constants and lower values for European PHE emission rates.
 Additional metadata can be found via: Thackray et al. DOI: 10.1021/acs.est.5b01823
DOI: 10.18739/a2w08wh4p
title: Polychlorinated biphenyls (PCBs) in the Arctic atmosphere: determining important driving forces using a global atmospheric transport model, 1979-2010

description: We present a spatially and temporally resolved global atmospheric polychlorinated biphenyl (PCB) model, driven by meteorological data, that is skilled at simulating mean atmospheric PCB concentrations and seasonal cycles in the Northern Hemisphere midlatitudes and mean Arctic concentrations. However, the model does not capture the ob- served Arctic summer maximum in atmospheric PCBs. We use the model to estimate global budgets for seven PCB con- geners, and we demonstrate that congeners that deposit more readily show lower potential for long-range transport, consistent with a recently described "differential removal hypothesis" regarding the hemispheric transport of PCBs. Using sensitivity simulations to assess processes within, outside, or transport to the Arctic, we examine the influence of climate- and emissions-driven processes on Arctic concentrations and their effect on improving the simulated Arctic seasonal cycle. We find evidence that processes occurring outside the Arctic have a greater influence on Arctic atmospheric PCB levels than processes that occur within the Arctic. Our simulations suggest that re-emissions from sea ice melting or from the Arctic Ocean during summer would have to be unrealistically high in order to capture observed temporal trends of PCBs in the Arctic atmosphere. We conclude that midlatitude pro- cesses are likely to have a greater effect on the Arctic under global change scenarios than re-emissions within the Arctic.
DOI: 10.18739/a2c24qp1x
title: Collaborative Research: Evaluating the Competing Impacts of Global Emissions Reductions and Climate Change on the Distribution and Retention of selected persistent organic pollutants (POPs) in the Arctic Ocean, 1979-2050

description: The goal of the proposed research is to better understand how changes in global emissions and climate are affecting the distribution, lifetime, and bioavailability of selected persistent organic pollutants (POPs) in the Arctic Ocean. POPs travel globally in air and water, are often highly bioaccumulative, and have the ability to cycle among environmental media enabling long-range transport to remote regions such as the Arctic. The investigators will use a modeling approach to provide insight into the relative importance of changing primary anthropogenic emissions and oceanic biogeochemical processes in controlling the fate and lifetime of POPs in the Arctic Ocean. The research will focus on two classes of compounds (polyfluorinated compounds - PFCs - and polychlorinated biphenyls - PCBs) with contrasting physical and chemical properties affecting behavior and reactivity in the atmosphere and ocean. The investigators will also collect new data on depth profiles of PCBs and two PFCs - perfluorooctane sulfonate (PFOS) and perfluorooctanate (PFOA) - in the Arctic Ocean. Three main objectives will be addressed in the proposed research:
 1) Quantify the global and regional atmospheric budget of PCBs and PFCs, including relevant spatially-varying uncertainties 
 2) Quantify the budget of PCBs and PFCs in the Arctic Ocean, including inputs from atmospheric deposition, riverine inflows, and ocean cycling 
 3) Quantify the relative importance of atmospheric, oceanic, and riverine inputs of PFOA, PFOS and PCBs to the Arctic, including the influence of climate and emissions.
 Ultimately this project will improve knowledge of how these compounds reach the Arctic and inform environmental management. The broader impacts component of the project will have three main goals: (1) Provide policy-relevant information to the Stockholm Convention and other international agreements on POPs to support monitoring and evaluation efforts for its controls on PCBs and PFOS and related compounds; (2) Inform sustainability education, by developing a case study on emerging POPs in the Arctic for courses relevant to environmental sustainability; and (3) train the next generation of interdisciplinary scientists (one graduate student will be trained at each of the three collaborating institutions).
DOI: 10.18739/a2kk94d0r
title: Electron backscatter diffraction, United States, 2010-2015

description: EBSD data from crept polycrystalline lab ice