cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.18739/a2v97zt4z
title: Bering Strait Mooring Data 2023-2024

description: Bering Strait Moorings 2023-2024
 This is an archive of data from moorings deployed in Bering Strait from summer 2023 and to summer 2024.
 Mooring deployments were funded by the NSF-Arctic Observing Network award PLR-2153942 (PIs: Woodgate and Peralta-Ferriz).
 The mooring work required 2 dedicated cruises:
 - in 2023 (4th-14th July), a ~ 11 day cruise on the US vessel Norseman2 deployed the moorings. Some CTD sections were run on this cruise, and those data are archived separately.
 - in 2024 (8th-18th September), a ~ 11 day cruise on the US vessel Norseman2 recovered the moorings. Some CTD sections were run on this cruise, and those data are archived separately.
 In 2023, a total of three moorings were deployed:
 - two moorings (A2 and A4) in the US channel of the strait,
 - one mooring (A3) at a site just north of the strait.
DOI: 10.15468/dl.g2qxak
title: Occurrence Download

description: A dataset containing 2921 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "BasisOfRecord is one of (Human Observation, Machine Observation, Occurrence evidence, Observation)",
 "TaxonKey is one of (Clemmys guttata (Schneider, 1792))",
 "Country is one of (Bermuda, Canada, Greenland, Saint Pierre and Miquelon, United States of America)"
 ]
}

 The dataset includes 2921 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016847-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a2vd6p67p
title: Xeitl Sít’ (LeConte Glacier) acoustic data 2016–2017

description: ### Access
All acoustic data files in .wav and .DSG format can be accessed and downloaded from the directory via: [http://arcticdata.io/data/10.18739/A2VD6P67P](http://arcticdata.io/data/10.18739/A2VD6P67P).

### Overview
This dataset contains passive underwater acoustic recordings from an autonomous hydrophone (Loggerhead Instruments DSG-ST) moored at a depth of 120 meters (m) in Xeitl Geeyi (LeConte Bay), Alaska approximately 400 m from Xeitl Sit’ (LeConte Glacier). Data were collected from October 9, 2016 to May 10, 2017.

Raw data files from the recorder are compressed .DSG files, which require the included DSGread.m MATLAB file to convert to acoustic pressure. Recordings are also included in WAV format, which may be read by any audio processing software. Ambient noise levels, defined as the 25th-percentile-level, may be computed for individual DSG files using the included AmbientNoiseLevelComputation.m script.

Acoustic data may be compared with additional data sets captured of the environment during this time, including meteorological data from Amundson, et al. (2017) (https://doi.org/10.18739/A2K86G) and motion of icebergs using time-lapse photography from Amundson, et al. (2017) (https://doi.org/10.18739/A2J38KJ1W).
DOI: 10.18739/a2vm4302v
title: eXpendable Conductivity Temperature Depth (XCTD) profiles of temperature and salinity from Sermilik Fjord during August 2013

description: Three temperature and salinity profiles from Sermilik Fjord in Southeast Greenland. The profiles were collected using Sippican XCTD-1 eXpendable Conductivity Temperature Depth (XCTD) probes deployed from a helicopter. The profiles were collected on August 22 2013 in the ice mélange region of the Helheim Glacier and Sermilik Fjord system. The profiles were manually examined, quality controlled, and are provided as 2-meter (m) depth bin averages. The collection of these XCTD profiles was done during a shipboard survey of Sermilik Fjord and other Southeast Greenland fjords from August 18 - 29 2013. The shipboard CTD data are provided separately. These data were collected as part of a long-term project to monitor Sermilik Fjord to determine what water masses flow into and out of the fjord; in particular, if warm, Atlantic water from the Irminger Sea penetrates into the fjord and how freshwater from ice melt is diluted and transported out of the fjord. Observations have been collected in the fjord since 2008.
DOI: 10.18739/a2vt1gr83
title: Arctic Rain on Snow Dataset, 1931 - 2023

description: Rain on snow events occur when liquid precipitation falls on snow cover and refreezes. Ice crusts that form within the snow pack can have severe consequences for wildlife, infrastructure, and communities. Every rain on snow (ROS) event has its own character — no two are alike. Differences range in affected area size, duration, severity, and lasting effects. What is still unknown is to what degree ROS events as a whole will change, in frequency and intensity, in the coming years. The Arctic Rain on Snow database will help to start answering questions about the frequency and character of past and present rain on snow events, and aid in determing conditions and predictions for future events.
 Station records for 244 Automatic Surface Observing Systems (ASOS) stations across the Arctic were downloaded from the Iowa State University Iowa Environmental Mesonet site. Records include 2 m air and dew point temperatures, and present weather codes. Weather codes describe current weather condition and precipitation type, when precipitation is occuring. Raw stations records are cleaned to remove duplicates and measurements that fail logical and climatlogical quality checks. Cleaned records are resampled to an hourly timestep. Present weather codes are parsed to determine when liquid precipitation (RA - rain and FZRA - freezing rain) and solid precipitation (SN* - snow) is recorded. Preciptation data are then extracted to a database of precipitation events.
DOI: 10.18739/a2vx0651f
title: The Greenland Ice Sheet Large Ensemble: Future Simulations 2018-2203

description: ### Access

Dataset files can be accessed and downloaded via: [https://arcticdata.io/data/10.18739/A2VX0651F/](https://arcticdata.io/data/10.18739/A2VX0651F/).

### Overview

This dataset includes NetCDF model output from the Stochastically Enabled version of the Ice-Sheet and Sea-Level System Model (StISSM; Verjans et al. 2022). The domain encompasses the Greenland Ice Sheet. The time period of all large ensemble, and almost all ensemble simulations (except for "branched" small ensembles) extend over the time period 2018-2203. Each NetCDF files includes thickness and velocity on an unstructured finite-element mesh output every year for one simulation. The repository as a whole include two large ensembles (100 member simulations each) and 9 small ensembles (30 member simulations each). All methodological and modeling details of the ensemble are detailed in a pre-print by Verjans, Robel et al.

Verjans, V., Robel, A. A., Ultee, L., Seroussi, H., Thompson, A. F., Ackerman, L., Choi, Y., and Krebs-Kanzow, U.: The Greenland Ice Sheet Large Ensemble (GrISLENS): Simulating the future of Greenland under climate variability, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2024-4067, 2025.
DOI: 10.18739/a2w08wj44
title: National Oceanic and Atmospheric Administration (NOAA) Climate Data Record (CDR) of Northern Hemisphere (NH) Snow Cover Extent (SCE), Version 1, 1966-present

description: This National Oceanic and Atmospheric Administration (NOAA) Climate Data Record (CDR) is a record for the Northern Hemisphere (NH) Snow Cover Extent (SCE) spanning from October 4, 1966 to present, updated monthly after the 10th of each month. Data prior to June 1999 in the NH SCE CDR are based on satellite-derived maps of NH SCE produced weekly by trained NOAA meteorologists. In June 1999 weekly NOAA NH SCE maps ceased production and were replaced by daily SCE output from the Interactive Multisensor Snow and Ice Mapping System (IMS). The weekly SCE maps are digitized to an 88x88 (cells) Cartesian grid laid over an NH polar stereographic projection. Each grid cell in the NH SCE CDR has a binary value, indicating snow covered or snow free. The NH SCE CDR has been used in international assessments of climate variability and change, and in investigations regarding the role of snow cover in the climate system. Mapping accuracy is such that this product is considered suitable for continental-scale climate studies. The data are updated monthly in netCDF file format with variables including SCE and National Meteorological Center (NMC) grid (88x88 cell) coordinates.
 Robinson, David A.; Estilow, Thomas W.; and NOAA CDR Program (2012): NOAA Climate Data Record (CDR) of Northern Hemisphere (NH) Snow Cover Extent (SCE), Version 1. NOAA National Centers for Environmental Information. doi:10.7289/V5N014G9 [2023-12-12].
DOI: 10.18739/a2w08wj5m
title: Permafrost & remote sensing studies: 2022 field report for Point Lay, Alaska

description: This report describes the results and recommendations from permafrost and remote sensing activities in Point Lay, Alaska, in June 2022, including permafrost coring to characterize ice content and extent and to map terrain units; an unmanned aerial vehicle (UAV) survey to develop a high-resolution digital elevation model (DEM) and related products for community planning; a survey of house foundations; and interviews with community members. An appendix includes a summary of permafrost borehole data, locations of ground temperature sensors installed, a photo survey of house foundations, and a summary of interview responses.
DOI: 10.18739/a2w669b18
title: Landscape evolution and adapting to change in ice-rich permafrost systems, Prudhoe Bay, Alaska, 2023-2024

description: This project is part of Navigating the New Arctic (NNA) which addresses converging scientific challenges in the rapidly changing Arctic. Specifically, the goal of this project is to better understand ice-rich permafrost at local, regional, and circumpolar scales.
 This dataset provides ground temperature data in the active layer and near-surface permafrost to provide a baseline for assessing the future changes in the near-surface temperatures in the natural environment and next to the infrastructure/disturbed environment at Prudhoe Bay, Alaska. Collected ground temperature data are intended to help researchers, communities and public with ongoing activities to mitigate a threat of thawing permafrost on the local and regional scale, and to provide spatial data for validation of climate scenario models and temperature reanalysis approaches.
DOI: 10.18739/a2w950q4k
title: 52nd Arctic Workshop (AWS) Program andAbstracts, 2024 (University of Massachusetts Amherst)

description: The annual Arctic Workshop (now in this 52nd year) is a key scientific forum that has demonstrated its value by attracting scientists from around the world to its annual forum. The format is informal and especially encourages young research scientists to participate. They may be just embarking on a graduate career or be more experienced—the opportunities to talk and learn in a low stress meeting has proven to be a winning formula over the years. Participation in a focused scientific meeting, by giving an oral or poster presentation provides an opportunity for young scientists to gain confidence, learn from their peers and establish a network of contacts that will have lasting benefits in their careers. The Arctic Workshop is broadly interdisciplinary, enabling participants to step outside their immediate area of research and learn about other research being conducted in the Arctic.
DOI: 10.18739/a2wm13w2p
title: Navigating the New Arctic (NNA) planning grant; Developing community frameworks for improving food security in Greenland through fermented foods (2022-2024)

description: Inuit communities have sustained themselves in the Arctic for millennia through systematic knowledges about and relationships with the ecosystem of which they are a part. Because of increasing reliance on global industrial food systems there is a growing lack of access to sufficient quantities of affordable, culturally significant, and nutritious food. Arctic food insecurity stems from multiple factors, including the loss of Inuit knowledges regarding traditional food production due to negative, deficit-based stereotypes that label those foods as unsafe or disgusting. Fermented foods are among those traditional foods that have been the most criticized, even though they provide a valuable source of nutrition and health benefits. The overarching long-term goal of the planning grant project is to support the resurgence of Inuit fermented foods by generating positive, desire-based messages that recognize and value the knowledge of Indigenous fermenters, thereby improving food security in Inuit communities. The planning grant performed activities to build foundations for an Inuit-led, self-sustaining, and collaborative network in Greenland to promote Inuit fermented foods and food safety. These efforts were also intended to lead to improved scientific questions that address the future and present needs of people in the Arctic from an Indigenous perspective.
 Data collected for this planning grant include images, interviews, audio recordings, video recordings, and transcripts from 17 individual interviews and group discussions. These data were collected during three trips to Greenland, including two trips to South Greenland (Nanortalik, Narsarmijit, and Nunarsuaq) and one to Nuuk, spanning May 2022 to August 2024. Stakeholders included community members (elders, children, tourists, chefs, fishers, and other community members), a director of a cultural center, and a food authority supervisor. The interviews and recordings were conducted to identify key themes and to assess the desire and need for additional research and resources. The summary enclosed explains the trips, meetings and interactions, and major project findings. Key findings include how Greenlanders connect foods and land (place) together. Another finding is the expressed need for more resources and support for Greenlandic food researchers who are rooted in their communities and recognize the value of local knowledge.
DOI: 10.18739/a2wp9t840
title: Relative cover of vegetation from a small mammal experiment from summer 2018-2023 near Utqiagvik Alaska

description: We conducted a manipulative experiment to quantify the impact of small mammal herbivores on the plant community at three sites near Utqiagvik (Barrow), Alaska. At each site we set up grazing fences in July of 2018 to simulate different levels of small mammal herbivore (vole and lemming) activity. Each site had 3 treatment plots and a control plot: 1)Exclosure treatments (EX) were 8 meter (m) x 8m square mesh fences 2) control plots (CT) were 8m x 8m unfenced plots marked with pin flags at corners 3) press treatments (PR) were 20m x 20m square mesh fences stocked with 4 brown lemmings (Lemmus trimucronatus) every summer and 4) pulse treatments (PU) where we stocked the fence with 4 lemmings in 2018 and then removed and excluded lemmings from 2019-2022. At each site in each plot we collected relative abundance of plant species and ground cover in 8 1 square meter (m2) plots once each year (except in 2020).
DOI: 10.18739/a2ws8hn98
title: Tide gauge data for Tutakoke River stations, central Yukon-Kuskokwim Delta, 2007-2017

description: We maintained water-level recorders (Hobo Water Level recorders, U20-001-04, 0.5 to 1 hour intervals) at three stations (TG1, TG2, TG3) near Transect T5 (Fig. SI1) at the mouth of the Tutakoke River along the outer coast of the central portion of the Yukon-Kuskokwim Delta for various periods from 2007 to 2017. The loggers were installed in pipes buried in mud at the bottom of tidal guts to avoid ice scouring during winter; the installations were near the lower tidal range, but did not capture the full tidal range. Data field descriptions are provided in the metadata file.
DOI: 10.18739/a2ww77214
title: Goddard Institute for Space Studies Surface Temperature Analysis (GISTEMP v4)

description: Goddard Institute for Space Studies (GISS) Surface Temperature Analysis version 4 (GISTEMP v4) is an estimate of global surface temperature change. Graphs and tables are updated around the middle of every month using current data files from National Oceanic and Atmospheric Administration (NOAA) Global Historical Climatology Network (GHCN) v4 (meteorological stations) and Extended Reconstructed Sea Surface Temperature (ERSST) v5 (ocean areas), combined as described in our publications Hansen et al. (2010) and Lenssen et al. (2019). These updated files incorporate reports for the previous month and also late reports and corrections for earlier months.
DOI: 10.18739/a2x05xf3w
title: Thermal state of permafrost in North America - annually observed ground temperatures, Alaska, 2024

description: This work coordinates data collection using standard equipment and protocols at North American and Russian sites. These data sets provide the baseline 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. The work represents the United States (US) contribution to the ongoing activities of the Global Terrestrial Network for Permafrost that obtains temperatures in a large number of globally distributed monitoring sites in order to provide a snapshot of permafrost temperatures in both time and space.
 The US National Science Foundation funded this work with award #0520578, #0632400, #0856864, and #1304271.
DOI: 10.18739/a2x05xf4c
title: Lake Qaupat, Baffin Island 5,800 Year Plant Wax and Geochemical Data

description: Paleo water isotope records can elucidate how the Arctic water cycle responded to past climate changes. We analyze the hydrogen isotope composition (δ2H) of plant‐derived n‐alkanoic acids (waxes) from Lake Qaupat, Baffin Island, Nunavut, Canada, to assess moisture sources and seasonality during the past 5.8 kiloannum (ka). We compare this record to a sedimentary ancient DNA (sedaDNA)‐inferred vascular plant record from the same lake, aiming to overcome the uncertainty of plant community impacts on leaf waxes. As the sedaDNA record reveals a stable plant community after the colonization of Betula sp. at 6.1 ka, we interpret plant wax δ2H values to reflect climate, specifically mean annual precipitation δ2H. However, the distributions of n‐alkanoic acid homologs suggest that aquatic mosses, which are not represented in the sedaDNA record, may become more abundant towards the present. Therefore, we cannot exclude the possibility that changes in the plant community cause changes in the plant wax δ2H record, particularly long‐chain waxes, which become less abundant through this record. We find that Lake Qaupat mid‐chain plant wax δ2H is enriched coincident with high Labrador Sea summer surface temperature, which suggests that local moisture sources in summer and early autumn have the greatest impact on precipitation isotopes in this region.
DOI: 10.18739/a2x34mt7p
title: Chemical, elemental, gas, and isotopic measurements spanning the past 500 years from the Summit2023 ice core collected in Greenland

description: The specific goals of this project were to (1) investigate the rate and timing of temperature-dependent in situ biological production of carbon monoxide and methane in an Arctic ice core, (2) develop records of atmospheric carbon monoxide and methane spanning recent centuries, and (3) determine the roles that ice impurities may play in any observed in situ gas production. The collection and analysis of a ~150 meter (m) long ice core from Summit Station, Greenland in 2023 was used for these investigations and analysis of the ice core was conducted both in the field and in the Ice Core Laboratory at the Desert Research Institute (Reno, NV). This ice core was drilled within Summit Station near the cargo line, so ice deposited after camp establishment in the late 1980s was not analyzed because of contamination.
DOI: 10.18739/a2x63b71h
title: Surface nitrogen conditions associated with bottle uptake measurements during a summer 2022 Alexandrium catenella bloom in the Alaskan Arctic (NRS2022_02S)

description: In the rapidly changing Arctic ecosystem, the recent emergence of harmful algal blooms (HABs) threatens human and ecosystem health. There is increasing evidence that toxic dinoflagellates of the Alexandrium genus are blooming in the Pacific Arctic Ocean, in dense enough concentrations to necessitate shellfishing closures and to detect toxins in marine mammals that forge in Alaskan waters. Our understanding of the nutrient dynamics that sustain HABs in the Pacific Arctic is severely limited, particularly as these blooms tend to occur in late summer when dissolved inorganic nitrogen is drawn down and limits phytoplankton growth. Dissolved organic nitrogen could prove a critical nitrogen source for HABs in the Pacific Arctic, as it has in other regions.
 This dataset presents measurements taken on Leg 2 of a research cruise (NRS2022_02S) on the Research Vessel (R/V) Norseman II in Aug-Sep 2022 to characterize the nutrient usage by A. catenella. It includes the nutrients (silicate, phosophate, total dissolved nitrogen, and four dissolved nitrogen substrates), particulate organic carbon and nitrogen, and chlorophyll concentrations associated with the beginning of 13 incubation experiments in which we measured nitrogen uptake rates by the surface biological community. We also include the salinity and temperature measurements from CTD-mounted sensors for water collection from Niskin bottles for each incubation set up.
 Other associated datasets include:
 Leah McRaven & Robert Pickart. (2024). Conductivity Temperature Depth (CTD) data from the Norseman II (NRS22-1s and NRS22-2s), as part of the 2022 Origin and Fate of Harmful Algal Blooms in the Warming Chukchi Sea cruise. Arctic Data Center. doi:10.18739/A2B853K56.
 Evangeline Fachon, Donald M Anderson, Mrunmayee Pathare, Michael Brosnahan, Eric Muhlbach, Kali Horn, Nathaniel Spada, & Anushka Rajagopalan. (2024). Alexandrium catenella planktonic cell abundance and toxicity from the Norseman II (NRS2022_01S and NRS2022_02S), as part of the 2022 Origin and Fate of Harmful Algal Blooms in the Warming Chukchi Sea cruise. Arctic Data Center. doi:10.18739/A2804XM7S.
 Miguel Goni & Dean Stockwell. (2024). Conductivity-Temperature-Depth (CTD) Bottle Data from the Norseman II cruises (NRS2022_01S and NRS2022_02S) including Particulate Organic Carbon (POC) Particulate Nitrogen (PN), Chlorophyll (Chl), Phaeophytin (Phaeo), and dissolved nutrients (Nitrate, Nitrite, Phosphate, Silicate, and Ammonium) (2022). Arctic Data Center. doi:10.18739/A2M90249T.