cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.18739/a2736m33w
title: 2012 refrozen melt layer location, density, and connectivity records from airborne radar sounding, Greenland, 2017

description: Surface meltwater runoff dominates present-day mass loss from the Greenland Ice Sheet. In the interior, porous firn can buffer runoff by retaining meltwater unless perched impermeable horizons, such as ice slabs, develop and restrict percolation. Recent field observations suggest that such horizons might develop rapidly during extreme melt seasons. In particular, subsurface refreezing of surface meltwater during the 2012 extreme melt season created a spatially coherent refrozen melt layer across the Greenland Ice Sheet. We use airborne radar sounding data collected by the University of Kansas Center for the Remote Sensing of Ice Sheets (CReSIS) to map the extent of this layer and constrain its density and lateral connectivity at the radar footprint scale. These observations provide insights into the multi-year impact of extreme melt seasons on firn structure and meltwater drainage pathways.
 This data set contains detections of this melt layer from Accumulation Radar data collected by CReSIS in 2017. We use an electromagnetic forward model to invert the observed radar reflectivity to constrain the layer density and measure connectivity based on the number of laterally adjacent detections. File 2012IceLayerDetections.txt contains the latitude, longitude, layer prominence, the probability that layer density exceeds pore close-off, lateral layer connectivity, the minimum layer density consistent with the observed radar reflectivities, and the maximum layer density consistent with the observed radar reflectivities, all averaged to 1kilometer (km) grid cell along the flight lines. The files [Date]_[Segment]_CleanResults.txt contains the same data, but broken out into 18 individual text files, one for each radar flight transect analyzed. The date and segment match the CReSIS flight date and segment assigned to the analyzed radargrams.
DOI: 10.18739/a23f4kp22
title: Beaufort Gyre Observing System (BGOS) Underway Partial pressure of carbon dioxide (pCO2) data and air-sea CO2 fluxes, Arctic Ocean, 2011-2019

description: These data were collected on the CCGS (Canadian Coast Guard) Louis St. Laurent during BGOS (Beaufort Gyre Observing System) research cruises in 2012, 2013, 2014, 2016, 2017, 2019 in the Beaufort Sea area. They are underway pCO2 (Partial pressure of carbon dioxide) data collected using an equilibrator-infrared method (SUPER CO2 system from Sunburst Sensors). Ancillary data for calculation of air-sea CO fluxes include temperature, salinity, atmospheric CO2, wind speed, and gas transfer velocity (calculated from Wanninkhof et al. (2009). Fluxes are not corrected for fractional ice-coverage.
 The specific goal of the study is to continue to operate an Arctic Observing Network (AON) for the measurement of the partial pressure of CO2 (pCO2), pH, and dissolved O2 (DO) focused on the surface waters of the Arctic Ocean (specifically, the Canada Basin). These data were collected on the CCGS (Canadian Coast Guard) Louis St. Laurent during a BGOS (Beaufort Gyre Observing System) research cruise in 2019 in the Beaufort Sea area. It is underway pCO2 (partial pressure of carbon dioxide) data collected using an equilibrator-infrared method (SUPER CO2 system from Sunburst Sensors). Ancillary data for calculation of air-sea CO2 fluxes include temperature, salinity, atmospheric CO2.
DOI: 10.18739/a2zp3w17g
title: Nutrients, nitrogen fixation, nitrogen uptake and carbon uptake data collected from the Western Arcitic Ocean, 2016-2017

description: Nitrogen fixation is the source of all biologically usable nitrogen on earth. In the ocean, specialized nitrogen fixing microorganisms take nitrogen gas from the atmosphere and convert it into forms of nitrogen that other organisms use to grow. Our research investigates the extent of nitrogen fixation in the coastal Alaskan Arctic and compares the rate of nitrogen fixation to primary production and uptake (use) rates of other nitrogen compounds including ammonium, nitrate, urea and amino acids. Samples were collected over two consecutive summers in 2016 and 2017. The effort encompassed coastal regions in the Bering, Chukchi and Beaufort Seas with a specific interest in the areas of high productivity surrounding the Hanna Shoal region of the Chukchi Sea.
DOI: 10.18739/a2pn8xg5t
title: Greenland Ice Sheet Acoustic Doppler Current Profiler (ADCP) measurements of supraglacial river discharge and Global Positioning System (GPS) measurements of ice surface motion, 2016

description: In July 2016 we collected simultaneous field measurements of supraglacial river discharge and localized ice motion on the southwest Greenland Ice Sheet ablation zone. The measurements were obtained upstream of a major moulin, enabling study of how supraglacial meltwater runoff influences subglacial hydrology and ice motion. Field operations were carried out from 5-14 July 2016, with 168 consecutive hourly measurements of supraglacial river discharge collected 6-13 July using a SonTek RiverSurveyor M9 Acoustic Doppler Current Profiler (ADCP). A Tyrolean cableway was suspended over the river to safely and repeatedly tow the ADCP back and forth across the channel. A total of 847 ADCP transects were acquired, of which 677 later passed rigorous quality-assurance screening and were used to compute 174 hourly in situ discharge measurements. The full-resolution transects of ADCP velocity data are provided here. At the same time, simultaneous measurements of ice surface motion were collected every 5 seconds using a Trimble R7 Global Positioning System (GPS) receiver and Trimble Zephyr Geodetic antenna anchored in the ice (67.048°North (N), -49.018 ° West (W), elevation 1211.43 meters (m)). On-ice kinematic GPS positions were later estimated using carrier-phase differential processing relative to a bedrock mounted base station (67.150°N, -50.058°W, elevation 581.19) and final International GNSS Service satellite orbits. The full resolution GPS data are provided here. Used together, the paired datasets enable study of the interaction of supraglacial meltwater moulin input with local ice sheet motion. When using these data please cite the 2021 research article (Smith et al., "Supraglacial river forcing of subglacial water storage and diurnal ice sheet motion", Geophysical Research Letters, 2021). When citing the ADCP hydrographic data collection method please cite the original article describing this measurement methodology (Smith et al., Direct measurements of meltwater runoff of the Greenland ice sheet surface, Proceedings of the National Academy of Sciences (PNAS), 2017 https://www.pnas.org/content/pnas/114/50/E10622.full.pdf) [Note: An additional 72 h of ADPC discharge data from the same site appear in the Supplemental Information of that paper]
 An R script, saveFiles.R is included here to access the files. Please get in touch with support@arcticdata.io for additional help in downloading files in this dataset.
DOI: 10.18739/a29w09071
title: Arctic Observing Network (AON) observations from the 2009-2010 Beaufort shelf-edge mooring array.

description: This submission contains data collected as a part of the 2009-2010 Beaufort shelf-edge mooring array, which was designed to investigate the manner in which the continental shelves communicate with the interior Arctic basin. Funding was provided by the National Science Foundation (NSF).
 This submission contains data from the BS3 mooring site, which has collected a consistent and detailed timeseries of physical oceanographic observations beginning in 2002 until present. Funding for this long-term data collection has been supported by the NSF Arctic Observing Network.
DOI: 10.18739/a26688k5g
title: Shrub plant traits of Betula nana and Salix glauca in West Greenland, 2017

description: Warming environmental conditions are often credited with increasing Arctic shrub growth and altering abundance and distribution, yet it is unclear if tundra shrub expansion will continue into future decades. Water availability may begin to limit Arctic shrub growth if increasing air temperatures create drier soil conditions due to increased evapotranspiration and permafrost-thaw-induced soil drainage. However, few studies have effectively considered how dominant tundra shrub species respond to variations in both temperature and moisture. To better understand the key effects of temperature variation and soil moisture on two dominant circumpolar deciduous shrubs, we studied shrub growth along a natural landscape gradient in West Greenland. We found that the growth forms of both grey willow (Salix glauca) and dwarf birch (Betula nana) were sensitive to variations in air temperature and soil moisture. For both species, increases in air temperature were positively correlated to greater shrub volume, with much of the additional canopy volume due to increased woody biomass. Leaf biomass was best predicted by edaphic features including extractable ammonium, which was positively related to soil moisture, and bulk density. Warmer soils generally tended to be drier, suggesting that ongoing warming in the area would lead to significant water limitation. Our findings suggest that drier soil conditions are likely limiting foliar production by two circumpolar dominant shrubs, Betula nana and Salix glauca, which could have wide-ranging, biome level consequences about ongoing and predicted shrub growth and expansion.
DOI: 10.18739/a25717p68
title: Zooplankton abundances from the Chukchi and Beaufort Seas near Point Barrow Alaska during August and September 2008

description: The Arctic Ocean ecosystem may respond dramatically to climate change through modification of the physical environment (e.g., hydrography and ice cover). A better understanding of the coupled biological-physical ocean ecosystem, and its interannual variability, is necessary to predict and understand these potential impacts of climate change on the Arctic ecosystem. The Chukchi-Beaufort Sea region near Barrow, Alaska, including coastal waters, has been identified as key because it lies at the junction of several ocean regions and is downstream of the Pacific Arctic gateway and hence is influenced physically and ecologically by input from the northern Bering Sea through Bering Strait. Furthermore, the shelf near Point Barrow is a known feeding hotspot for bowhead whales during their fall migration from the Canadian Arctic to the Bering Sea. To address interannual variability in ocean conditions and the formation of the fall bowhead whale feeding hotspot, oceanographic sampling in the Chukchi and near-shore Beaufort Seas was conducted annually using boat-based surveys during August-September 2005-2015 as part of multiple research programs. This data set contains the mesozooplankton abundances from plankton tows conducted at stations on the Chukchi and Beaufort Shelves and in Barrow Canyon, Alaska, during August and September of 2008. See the file ZooplanktonMethods_2008.txt and the on-line information for a description the sampling and analysis methods. Two data files are included: one in Microsoft Excel (.xls) format and the second in ASCII (.txt) format.
DOI: 10.15468/dl.4rcknu
title: Occurrence Download

description: A dataset containing 71 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Ledermanniella schlechteri (Engl.) C.Cusset"
 ]
}

 The dataset includes 71 records from 11 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027854-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a21g0hw1n
title: Zooplankton Abundances from near Point Barrow Alaska, August and September 2007

description: The Arctic Ocean ecosystem may respond dramatically to climate change through modification of the physical environment (e.g., hydrography and ice cover). A better understanding of the coupled biological-physical ocean ecosystem, and its interannual variability, is necessary to predict and understand these potential impacts of climate change on the Arctic ecosystem. The Chukchi-Beaufort Sea region near Barrow, Alaska, including coastal waters, has been identified as key because it lies at the junction of several ocean regions and is downstream of the Pacific Arctic gateway and hence is influenced physically and ecologically by input from the northern Bering Sea through Bering Strait. Furthermore, the shelf near Point Barrow is a known feeding hotspot for bowhead whales during their fall migration from the Canadian Arctic to the Bering Sea. To address interannual variability in ocean conditions and the formation of the fall bowhead whale feeding hotspot, oceanographic sampling in the Chukchi and near-shore Beaufort Seas was conducted annually using boat-based surveys during August-September 2005-2015 as part of multiple research programs. This data set contains the mesozooplankton abundances from plankton tows conducted at stations on the Chukchi and Beaufort Shelves and in Barrow Canyon, Alaska, during August and September of 2007. See the file ZooplanktonMethods_2007.txt and the on-line information for a description the sampling and analysis methods. Two data files are included: one in Microsoft Excel (.xls) format and the second in ASCII (.txt) format.
DOI: 10.18739/a2wp9t76h
title: Zooplankton abundances from the Chukchi and Beaufort Seas near Point Barrow Alaska during August and September 2009

description: The Arctic Ocean ecosystem may respond dramatically to climate change through modification of the physical environment (e.g., hydrography and ice cover). A better understanding of the coupled biological-physical ocean ecosystem, and its interannual variability, is necessary to predict and understand these potential impacts of climate change on the Arctic ecosystem. The Chukchi-Beaufort Sea region near Barrow, Alaska, including coastal waters, has been identified as key because it lies at the junction of several ocean regions and is downstream of the Pacific Arctic gateway and hence is influenced physically and ecologically by input from the northern Bering Sea through Bering Strait. Furthermore, the shelf near Point Barrow is a known feeding hotspot for bowhead whales during their fall migration from the Canadian Arctic to the Bering Sea. To address interannual variability in ocean conditions and the formation of the fall bowhead whale feeding hotspot, oceanographic sampling in the Chukchi and near-shore Beaufort Seas was conducted annually using boat-based surveys during August-September 2005-2015 as part of multiple research programs. This data set contains the mesozooplankton abundances from plankton tows conducted at stations on the Chukchi and Beaufort Shelves and in Barrow Canyon, Alaska, during August and September of 2009. See the file ZooplanktonMethods_2009.txt and the on-line information for a description the sampling and analysis methods. Two data files are included: one in Microsoft Excel (.xls) format and the second in ASCII (.txt) format.
DOI: 10.18739/a2rx93f2r
title: Dataset: Nitrous oxide cycling in the Western Arctic Ocean from stable isotopic and concentration data during the Seventh Chinese Arctic Research Expedition (CHINARE) (7/19/16 to 9/9/16)

description: Nitrous oxide is a potent greenhouse gas in the troposphere and an ozone-depleting substance in the stratosphere, yet its sources and sinks in the ocean are neither well-quantified nor well understood. Nitrous oxide is both produced and consumed by microbial processes; it is produced by different processes dependent upon the amount of oxygen present locally. High nitrous oxide saturations were recently observed in productive shallow Arctic shelf waters. 
 The primary goal of this dataset is to evaluate nitrous oxide cycling in the Western Arctic Ocean from its concentrations, stable isotopes and isotopomers. The project will use isotopic and isotopomer measurements from both shelf and offshore waters to constrain estimates of nitrous oxide cycling in the Arctic. The data will be used to evaluate 1) the pathways of nitrous oxide production from either nitrification following organic matter decomposition in the water column or coupled nitrification-denitrification in the sediments and 2) how these processes influence nitrous oxide exchanges between the surface layer and the atmosphere. Comparisons of observations at coastal and shelf stations in the Bering and Chukchi seas with those offshore in the Deep Canadian Basin will allow the evaluation of the effects of mixing and long-range transport on geochemical signals. The measurements will also serve as a baseline for future assessment of change.
DOI: 10.18739/a2gh9b984
title: Arctic Observing Network (AON) observations from the 2010-2011 Beaufort shelf-edge mooring array

description: This submission contains data collected as a part of the 2010-2011 Beaufort shelf-edge mooring array, which was designed to investigate the manner in which the continental shelves communicate with the interior Arctic basin. Funding was provided by the National Science Foundation (NSF).
 This submission contains data from the BS3 mooring site, which has collected a consistent and detailed timeseries of physical oceanographic observations beginning in 2002 until present. Funding for this long-term data collection has been supported by the NSF Arctic Observing Network.
DOI: 10.18739/a2br8mh3h
title: Arctic Observing Network (AON) observations from the 2011-2012 Beaufort shelf-edge mooring array

description: This submission contains data collected as a part of the 2010-2011 Beaufort shelf-edge mooring array, which was designed to investigate the manner in which the continental shelves communicate with the interior Arctic basin. Funding was provided by the National Science Foundation (NSF).
 This submission contains data from the BS3 mooring site, which has collected a consistent and detailed timeseries of physical oceanographic observations beginning in 2002 until present. Funding for this long-term data collection has been supported by the NSF Arctic Observing Network. More information on the AON project can be found at http://aon.whoi.edu/. Please see AON_2011_2012_submission_info.pdf for all submission details.
DOI: 10.15468/dl.ydvvbd
title: Occurrence Download

description: A dataset containing 949 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Continent is Europe",
 "Country is Austria",
 "TaxonKey is Spermophilus citellus (Linnaeus, 1766)",
 "Year 2000-2024"
 ]
}

 The dataset includes 949 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027857-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a2707wp8k
title: Arctic Observing Network (AON) observations from the 2012-2013 Beaufort shelf-edge mooring array

description: This submission contains data collected as a part of the 2010-2011 Beaufort shelf-edge mooring array, which was designed to investigate the manner in which the continental shelves communicate with the interior Arctic basin. Funding was provided by the National Science Foundation (NSF).
 This submission contains data from the BS3 mooring site, which has collected a consistent and detailed timeseries of physical oceanographic observations beginning in 2002 until present. Funding for this long-term data collection has been supported by the NSF Arctic Observing Network. More information on the AON project can be found at http://aon.whoi.edu/.
DOI: 10.5519/qd.o3aohzed
title: Query on the Natural History Museum Data Portal (data.nhm.ac.uk) (95 records)
DOI: 10.18739/a23775w4t
title: Arctic Observing Network (AON) observations from the 2013-2014 Beaufort shelf-edge mooring array

description: This submission contains data collected as a part of the 2010-2011 Beaufort shelf-edge mooring array, which was designed to investigate the manner in which the continental shelves communicate with the interior Arctic basin. Funding was provided by the National Science Foundation (NSF).
 This submission contains data from the BS3 mooring site, which has collected a consistent and detailed timeseries of physical oceanographic observations beginning in 2002 until present. Funding for this long-term data collection has been supported by the NSF Arctic Observing Network. More information on the AON project can be found at http://aon.whoi.edu/.
DOI: 10.15468/dl.7nefq3
title: Occurrence Download

description: A dataset containing 3204 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Faunal Inventory of Morysin Nature Reserve"
 ]
}

 The dataset includes 3204 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027859-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a2zg6g797
title: Arctic Observing Network (AON) observations from the 2016-2018 Beaufort shelf-edge mooring array

description: This submission contains data collected as a part of the 2016-2018 Beaufort shelf-edge mooring array, which was designed to investigate the manner in which the continental shelves communicate with the interior Arctic basin. Funding was provided by the National Science Foundation (NSF). This submission contains data from the BS3 mooring site, which has collected a consistent and detailed timeseries of physical oceanographic observations beginning in 2002 until present. Funding for this long-term data collection has been supported by the NSF Arctic Observing Network. More information on the AON project can be found at http://aon.whoi.edu/.
DOI: 10.18739/a2fn10t0w
title: Report on the impact of 21st century climate change on social-ecological systems at Greenland’s marine margins

description: A multidisciplinary team spent a year examining how climate change will impact socio-ecological systems at Greenland’s changing coastal margins. The research focused on two glacial fjord/ecosystem/community systems: one in Northwest Greenland near the community of Qaanaaq, the Qaanaaq region; and the other in Southeast Greenland near the community of Tasiilaq, the Ammassalik region. These two regions encompass a range of geographic, climatic, historical, and social settings across Greenland. This report summarizes the findings from an initial analysis. It includes an analysis of historical data to identify periods of past climate over the previous 100 years that resemble the warmer conditions observed today. It includes an analysis of climate projections to determine if and when the climate around coastal Greenland will exceed the variability experienced over the last 100 years. This report concerns first the physical and ecological system, considering both observed changes in the past and projected changes in the future. We consider and discuss in turn the following components of the physical and ecological system: (i) atmosphere, (ii) ocean, (iii) sea ice, (iv) ice sheet and glaciers, (v) primary productivity and chlorophyll, (vi) fisheries and (vii) marine mammals/polar bears. A discussion then brings together the described climate and ecological variability and considers future directions.