cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.18739/a24m91b2w
title: Cloud microphysical properties at Arctic atmospheric observatories: Barrow, Alaska 2006

description: This data set contains cloud microphysical properties data for Barrow, Alaska. Cloud microphysical properties determine the manner in which clouds impact atmospheric radiation and the hydrological cycle. This collection of data sets documents vertically-resolved cloud microphysical properties at multiple locations across the Arctic. Observations are based on the available surface-based, remote-sensors measurements at each site. A variety of cloud microphysics retrieval algorithms are employed to first identify the cloud type (phase) and then characterize the hydrometeor characteristic size and water content for both liquid and ice phases. While an attempt has been made to maintain consistent retrievals across the different observatories, each has a unique set of cloud observation instruments which can impose unique, site-specific signatures on the retrieval results.
DOI: 10.18739/a20v89h7n
title: Cloud microphysical properties at Arctic atmospheric observatories: SHEBA 1997

description: This data set contains cloud microphysical properties data for the Surface Heat Budget of the Arctic (SHEBA) surface-based sites. Cloud microphysical properties determine the manner in which clouds impact atmospheric radiation and the hydrological cycle. This collection of data sets documents vertically-resolved cloud microphysical properties at multiple locations across the Arctic. Observations are based on the available surface-based, remote-sensors measurements at each site. A variety of cloud microphysics retrieval algorithms are employed to first identify the cloud type (phase) and then characterize the hydrometeor characteristic size and water content for both liquid and ice phases. While an attempt has been made to maintain consistent retrievals across the different observatories, each has a unique set of cloud observation instruments which can impose unique, site-specific signatures on the retrieval results.
DOI: 10.18739/a2w37kw2k
title: Cascade Lake, Alaska, Holocene Physical Properties Data

description: These data were generated as part of an NSF project titled "Collaborative Research: Resolving centennial- to millennial-scale trends in glacier extent and lake sedimentation in the Brooks Range, Arctic Alaska." The project was designed to test hypotheses about the climate history of the Arctic by generating climate and glacier reconstructions from lake sediments and glacial landforms in the north central Brooks Range.
DOI: 10.18739/a2rb6w287
title: UpTempO buoys deployed in 2015

description: Ice-based buoys exist that can measure temperature profiles, but these are not optimized for observing the open sea. Thus the objective of this proposal is to fill this gap in the Arctic Observing Network (AON) measurement strategy, i.e., to measure the time history of summer warming and subsequent fall cooling of the seasonally open water areas of the Arctic Ocean. The PIs will focus on those areas with the greatest ice retreat, i.e., the northern Beaufort, Chukchi, East Siberian, and Laptev Seas. Their method will be to build up to 10 relatively inexpensive ocean thermistor string buoys per year, to be deployed in the seasonally ice-free regions of the Arctic Ocean. The Arctic-ADOS (Autonomous Drifting Ocean Station) buoy will float at the ocean surface, equipped with (i) a sea level pressure sensor, (ii) a 50 m long string of 11 thermistors, and (iii) a high precision conductivity/temperature pair at 5 m depth on some buoys for thermistor calibration. Data will be recorded every 2 
hours and downloaded in near real time via Argos satellite to the web site of the International Arctic Buoy Program (IABP). Daily average and vertically interpolated data (to 1 m bins) will also be provided on the IABP website, and will be sent to data archives (Cooperative Arctic Data and Information Service-CADIS and National Oceanographic Data Center-NODC). The PIs will 
also work with scientists at mission-oriented agencies to better incorporate ocean surface data into their global products such as Sea Surface Temperature analyses. Real-time data will also be made available to the operational community via the Global Telecommunications System (GTS). 
Buoy deployment will use existing assets such as C130 aircraft coordinated by the National Ice Center (NIC), ship cruises planned as part of other projects, and springtime ice surveys conducted by other projects and/or by the U.S. Navy north of Alaska. Sponsor: 
University of Washington,
4333 Brooklyn Ave NE, Seatlle, WA 98195-9472 Funding Source: Arctic Observing Network (AON) Link to Data: 
http://psc.apl.washington.edu/UpTempO/Data.php
DOI: 10.18739/a2mk6585z
title: Disko/Nuussuaq Holocene alpine glacier data

description: These data were generated as part of an NSF project titled "Collaborative Research: Arctic sensitivity to climate perturbations and a millennial perspective on current warming derived from shrinking ice caps." The project was designed to test hypotheses about feedbacks in the Arctic climate system based on patterns of Holocene ice cap fluctuations in western Greenland.
 The data described here relate to the following journal article: Schweinsberg, A.D., Briner, J.P., Miller, G.H., Bennike, O., and Thomas, E.K., 2017, Local glaciation in West Greenland linked to North Atlantic Ocean circulation during the Holocene. Geology, v. 45, no. 3, p. 195-198."
DOI: 10.18739/a2gx44v3n
title: Cloud microphysical properties at Arctic atmospheric observatories: Barrow, Alaska 2011

description: This data set contains cloud microphysical properties data for Barrow, Alaska. Cloud microphysical properties determine the manner in which clouds impact atmospheric radiation and the hydrological cycle. This collection of data sets documents vertically-resolved cloud microphysical properties at multiple locations across the Arctic. Observations are based on the available surface-based, remote-sensors measurements at each site. A variety of cloud microphysics retrieval algorithms are employed to first identify the cloud type (phase) and then characterize the hydrometeor characteristic size and water content for both liquid and ice phases. While an attempt has been made to maintain consistent retrievals across the different observatories, each has a unique set of cloud observation instruments which can impose unique, site-specific signatures on the retrieval results.
DOI: 10.18739/a2c53f20q
title: Compatible solute production by sea ice bacteria

description: Two sea ice bacterial isolates (Polaribacter sp. ALD11 and Shewanella sp. ALD9) were grown in liquid media to either exponential or stationary phase, in low or high salinity media, and at low or high temperature. Cells were harvested by pelleting and immediate freezing in liquid nitrogen, followed by storage at -80C until shipment on dry ice. Subsamples were sent for metabolomic and transcriptomic analyses to evaluate the effects of environmental difference son gene expression and compatible solute content in these organisms.
DOI: 10.18739/a27d2q76z
title: Passive acoustic data from A2 in the Bering Strait for July 2015

description: Passive acoustic data from instruments on moorings in the Bering Strait region. The data for this instrument were collected at 65.78 N latitude and 168.568 W longitude. Data were recorded from 10 Hz - 8192 Hz (16 kHz sample rate) the first 10 minutes of each hour from July 2013-July 2014 and 10 Hz - 4096 Hz (8 kHz sample rate) the first 20 minutes of each hour from July 2014- July 2015.
DOI: 10.18739/a23n20f1q
title: Sap-flux measured transpiration for a mature larch forest in northeastern Siberia (VIPER project)

description: This data set includes measurements of sap-flux and associated environmental and biological variables required to derive measures of canopy transpiration and canopy stomatal conductance for a larch forest in northeastern Siberia. Data were collected annually for periods of 3-6 weeks during the growing season (June-August) from 2013-2015. Sap flux was measured in the same plants each year. A total of 17 sensors were used to measure 3 shrubs and 11 trees, where 3 trees where measured with two pair of sensors; one each on the north and south sides of each tree. Plants measured only once were instrumented on the north side. The data set includes raw sap-flux data, and also environmental data from the site, as well as R scripts to calculate whole-tree transpiration and stomatal conductance. The environmental data are included as separate files, and data on tree size including diameter at breast height, sapwood area, and leaf area are included in the script, with associated references where applicable.
DOI: 10.18739/a2zw18s6q
title: Program with Abstracts from the Second Polar Data Forum

description: The polar science community has unprecedented opportunities for science based on open, networked, digital, and ubiquitous communication technologies. This presents an urgent need for the polar science community, Arctic residents, and other stakeholders to establish a clear global vision, strategy, and action plan to ensure effective stewardship of and access to valuable Arctic and Antarctic data resources. The Second Polar Data Forum (PDF II) built on the successes of the first Polar Data Forum (PDF I) in Tokyo, Japan, October 2013. PDF II further refined relevant themes and priorities and is accelerating progress by establishing clear actions to address the target issues. This includes meeting the needs of society and science through promotion of open data and effective data stewardship, establishing
sharing and interoperability of data at a variety of levels, developing trusted data management systems, and ensuring long-term data preservation.
DOI: 10.18739/a2v40k03s
title: Short Read Raw genomic data set of DNA amplified from sediment cores on St. Paul Island, Alaska.

description: Raw data from the shotgun sequencing of Illumina-compatible DNA libraries derived from samples of three adjacent and overlapping lake sediment cores. These cores were taken from Lake Hill lake, St. Paul Island, Alaska in March 2013. The composite of these cores extends temporally from the late Pleistocene to the recent. This time range includes the occasion of woolly mammoth extinction on the island. Within this data set, which should comprise an indiscriminate sampling of the DNA present in the sampled lake sediment layers, the chronology of presence followed by absence of putative mammoth-derived DNA has been used to determine the timing of mammoth extinction on St. Paul.
DOI: 10.18739/a2qb9v60k
title: Passive acoustic data from A2 in the Bering Strait 2014-2015

description: Passive acoustic data from instruments on moorings in the Bering Strait region. The data for this instrument were collected at 65.78 N latitude and 168.57 W longitude. Data were recorded from 10 Hz - 4096 Hz (8 kHz sample rate) the first 20 minutes of each hour from July 2014- July 2015.
DOI: 10.18739/a2kp7tr75
title: Perchlorate record from Greenland ice cores

description: Perchlorate is a long-lived environmental contaminant, released from human activities but increasingly recognized to have a natural source as well. The project was undertaken to measure perchlorate in previously-collected Greenland ice cores, with specific objectives (1) to obtain a robust (continuous and annual resolution) 300-year record of perchlorate in the environment using ice core samples from Greenland, (2) to quantify the magnitude and variability of the natural, probably atmospheric perchlorate source in the Northern Hemisphere environment using the pre-1850 part of the record, (3) to estimate the relative contributions of natural and anthropogenic sources to perchlorate in the current environment, and (4) to improve our understanding of the natural formation process of environmentally important substances.
 A Summit, Greenland ice core was sampled and analyzed for perchlorate concentration. The ice core was previously dated with annual layer counting based on seasonal variations of chemical species in snow/ice. The perchlorate record covers the time period of 1700-2006.
DOI: 10.18739/a2fx73z4w
title: Radiocarbon in dissolved organic and inorganic carbon in the Arctic Ocean

description: Dissolved organic carbon (DOC) in the ocean is thousands of 14C years old, yet a portion of the DOC cycles on much shorter time scales (days to decades). We present 14C measurements of DOC in the Arctic Ocean and estimate that ≥8% of the DOC in the deep Eurasian Basin contains bomb 14C. While this is a limited data set, there appears to be selective loss of modern DOC in the surface and halocline waters of the open Beaufort Sea versus the Beaufort slope. At one of the Beaufort Sea stations, there is a linear relationship between DOC Δ14C values and previously measured total hydrolysable amino acid concentrations as reported by Shen et al. (2012), indicating that deep DOC contains small amounts of bioavailable DOC. The 14C data show that not all of the deep DOC is recalcitrant.
DOI: 10.18739/a2b56d50g
title: Integrating Passive Acoustic Monitoring in long-term oceanographic observations of the Bering Strait

description: This project aims to establish a base program for year-round acoustic monitoring of marine mammals in Bering Strait. Instrumentation will be added onto an existing high resolution physical and biological mooring program (National Science Foundation-Arctic Observing Network (AON) and Russian American Long-term Census of the Arctic), also supported by annual survey data. The combination of these data sets will provide urgently required, base-line information on how species presence varies seasonally with changes in sea ice, currents, ocean water temperatures and freshwater flow. Building on opportunistic proof-of-concept deployments in the strait in the last 2 years, the proposed effort will also provide critical, consistent data on interannual variability. The research project will test cutting edge scientific hypotheses such as: how do oceanographic conditions dictate the residency of different marine mammal species? Are temperate species invading the Arctic? What is the correlation between ice cover and marine mammal sound production? The Bering Strait is the only oceanic connection between the Pacific and the Arctic oceans. It is through this narrow (~85 km) passageway that the entire population of Bering-Chukchi-Beaufort bowhead whales passes twice yearly and that herds of beluga whales access Arctic waters. It is thought to be year-round habitat for ice seals and walrus. The Bering Strait is also the path by which Pacific sub-Arctic marine species are invading the Arctic. As the Northwest Passage becomes a viable Pacific-Atlantic shipping route, every ship along this route will pass through Bering Strait. It is, therefore, the region where climate change and changing anthropogenic utilization may have sizeable impacts on local marine fauna, and where changing fluxes of marine mammals to the Arctic can be well observed. Passive acoustic monitoring is the only method currently available to identify year-round, and in all weather conditions, the presence of marine mammals and other physical (ice movement) or anthropogenic (ships, oil and gas seismic exploration) sounds.
DOI: 10.18739/a26d5pb57
title: Dissolved Organic Carbon (C13 and C14) Measurements, Amundsen Basin, 2012, R/V Oden

description: Dissolved organic carbon (DOC) in the ocean is thousands of 14C years old, yet a portion of the DOC cycles on much shorter time scales (days to decades). We present 14C measurements of DOC in the Arctic Ocean and estimate that ≥8% of the DOC in the deep Eurasian basin contains bomb 14C. While this is a limited dataset, there appears to be selective loss of modern DOC in the surface and halocline waters of the open Beaufort Sea versus the Beaufort slope. At one of the Beaufort Sea stations, there is a linear relationship between DOC Δ14C values and previously measured total hydrolysable amino acid concentrations as reported by Shen et al. (2012), indicating that deep DOC contains small amounts of bioavailable DOC. The 14C data show that not all of the deep DOC is recalcitrant.
DOI: 10.18739/a22n4zj13
title: Dissolved Organic Carbon (C13 and C14) Measurements, Beaufort Sea, 2012 USCGC Healy

description: Dissolved organic carbon (DOC) in the ocean is thousands of 14C years old, yet a portion of the DOC cycles on much shorter time scales (days to decades). We present 14C measurements of DOC in the Arctic Ocean and estimate that ≥8% of the DOC in the deep Eurasian basin contains bomb 14C. While this is a limited dataset, there appears to be selective loss of modern DOC in the surface and halocline waters of the open Beaufort Sea versus the Beaufort slope. At one of the Beaufort Sea stations, there is a linear relationship between DOC ∆14C values and previously measured total hydrolysable amino acid concentrations as reported by Shen et al. (2012), indicating that deep DOC contains small amounts of bioavailable DOC. The 14C data show that not all of the deep DOC is recalcitrant.
DOI: 10.18739/a2xw47w7z
title: Dissolved Organic Carbon (C13 and C14) Measurements, Beaufort Sea, 2009, CCGS Amundsen

description: Dissolved organic carbon (DOC) in the ocean is thousands of 14C years old, yet a portion of the DOC cycles on much shorter time scales (days to decades). We present 14C measurements of DOC in the Arctic Ocean and estimate that ≥8% of the DOC in the deep Eurasian basin contains bomb 14C. While this is a limited dataset, there appears to be selective loss of modern DOC in the surface and halocline waters of the open Beaufort Sea versus the Beaufort slope. At one of the Beaufort Sea stations, there is a linear relationship between DOC Δ14C values and previously measured total hydrolysable amino acid concentrations as reported by Shen et al. (2012), indicating that deep DOC contains small amounts of bioavailable DOC. The 14C data show that not all of the deep DOC is recalcitrant.
DOI: 10.18739/a2t43j341
title: Passive acoustic data from A3 in the Bering Strait 2014-2015

description: Passive acoustic data from instruments on moorings in the Bering Strait region. The data for this instrument were collected at 66.76 N latitude and 168.95 W longitude. Data were recorded from 10 Hz - 4096 Hz (8 kHz sample rate) the first 20 minutes of each hour from July 2014- July 2015.
DOI: 10.18739/a2pg1hp17
title: Zooplankton Genetics 2015

description: The files contain mitochondrial gene sequence data for individual zooplankton (Calanus spp. And Thysanoessa spp.) collected near Barrow, AK. The files are Fasta files that can be opened in most bioinformatics software programs (e.g. Geneious, MegAlign, MEGA) or text/word processing programs. For each sequence, the file contains the species identification, isolate number, station number, collection location (Lat, Lon), collection date, the sequenced gene followed by the sequence.
DOI: 10.18739/a2jq0sv8z
title: Understory percent cover by functional group from Alaska borehole sites, 2015 (ViPER project)

description: The objective of this project is to examine the impacts of vegetation and ecosystem properties on active layer and permafrost thermal dynamics in order to better understand the vulnerability of permafrost to climate change. Datasets associated with this project include soil, vegetation, and ground temperature data from permafrost borehole sites in Alaska and NE Siberia. This dataset includes understory percent cover (by functional type) from borehole sites in Alaska, sampled in July-August 2015. Files associated with this dataset include extended metadata, site coordinates, and understory percent cover data.
DOI: 10.18739/a2dz0324m
title: Tree biomass at Alaska borehole sites, 2015 (ViPER project)

description: The objective of this project is to examine the impacts of vegetation and ecosystem properties on active layer and permafrost thermal dynamics in order to better understand the vulnerability of permafrost to climate change. Datasets associated with the project include soil, vegetation, and ground temperature data from permafrost borehole sites in Alaska and NE Siberia. This dataset includes tree diameter and aboveground biomass (live and dead) from borehole sites in Alaska, sampled in July-August 2015. Files associated with this dataset include extended metadata, site coordinates, and tree DBH and biomass data.
DOI: 10.18739/a2959c794
title: Active layer soil bulk density, moisture, carbon and nitrogen concentration and stable isotope data from Alaska borehole sites, 2015 (ViPER project)

description: The objective of this project is to examine the impacts of vegetation and ecosystem properties on active layer and permafrost thermal dynamics in order to better understand the vulnerability of permafrost to climate change. Datasets associated with the project include soil, vegetation, and ground temperature data from permafrost borehole sites in Alaska and NE Siberia. This dataset includes active layer soil bulk density, moisture, %C, %N, d13C, d15N from borehole sites in AK, sampled in July-August of 2015. Files associated with this dataset include extended metadata, site coordinates, and soil data.
DOI: 10.18739/a21n7xn2b
title: Tree canopy cover at Alaska borehole sites, 2015 (ViPER project)

description: The objective of this project is to examine the impacts of vegetation and ecosystem properties on active layer and permafrost thermal dynamics in order to better understand the vulnerability of permafrost to climate change. Datasets associated with the project include soil, vegetation, and ground temperature data from permafrost borehole sites in Alaska and NE Siberia. This dataset includes tree canopy cover from borehole sites in Alaska, sampled in July-August 2015. Files associated with this dataset include extended metadata, site coordinates, and canopy cover data.
DOI: 10.15468/dl.4jc245
title: Occurrence Download

description: A dataset containing 767 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Fibigia clypeata (L.) Medik.)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 2000"
 ]
}

 The dataset includes 767 records from 44 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027701-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a2x05xc9w
title: Woody debris at Alaska permafrost borehole sites, 2015 (ViPER project)

description: The objective of this project is to examine the impacts of vegetation and ecosystem properties on active layer and permafrost thermal dynamics in order to better understand the vulnerability of permafrost to climate change. Datasets associated with the project include soil, vegetation, and ground temperature data from permafrost borehole sites in Alaska and NE Siberia. This dataset includes fine and coarse woody debris mass from borehole sites in Alaska, sampled in July-August 2015. Files associated with this dataset include extended metadata, site coordinates, and woody debris data.
DOI: 10.18739/a2s756k6m
title: Understory biomass by functional group from Alaska borehole sites, 2015 (ViPER project)

description: The objective of this project is to examine the impacts of vegetation and ecosystem properties on active layer and permafrost thermal dynamics in order to better understand the vulnerability of permafrost to climate change. Datasets associated with this project include soil, vegetation, and ground temperature data from permafrost borehole sites in Alaska and NE Siberia. This dataset includes understory aboveground biomass (by functional type) from borehole sites in Alaska, sampled in July-August 2015. Files associated with this dataset include extended metadata, site coordinates, shrub basal diameter, and understory aboveground biomass.