cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.18739/a28g8fj3h
title: NABOS II - ADCP Water Current Data 2013 - 2015

description: The primary goal of our mooring observations was to document water, heat, and salt transports and water mass transformations on the Siberian continental slope. Primary objectives included quantifying the structure and temporal variability of the main water masses and obtaining detailed information about Atlantic Water layer dynamics and seasonal variations. These data are from Acoustic Doppler Current Profilers (ADCPs).
DOI: 10.18739/a24q7qq9r
title: NABOS II - MMP Water Current Data 2013-2015

description: The primary goal of our mooring observations was to document water, heat, and salt transports and water mass transformations on the Siberian continental slope. Primary objectives included quantifying the structure and temporal variability of the main water masses and obtaining detailed information about Atlantic Water layer dynamics and seasonal variations. These data are from the McLane Moored Profiler (MMP).
DOI: 10.18739/a20z70x50
title: NABOS II - SBE Water Quality, Temperature, and Bottom Pressure Data 2013 - 2015

description: The primary goal of our mooring observations was to document water, heat, and salt transports and water mass transformations on the Siberian continental slope. Primary objectives included quantifying the structure and temporal variability of the main water masses and obtaining detailed information about Atlantic Water layer dynamics and seasonal variations. These data are from the Sea-Bird Electronics (SBE) 37 (MicroCAT) Recorder, the SBE 53 Bottom Pressure Recorder, and the SBE 56 Temperature Logger. The CSV file provided here contains instrument calibration coefficients for the SBE 56 Temperature Loggers from moorings M1_5a, M1_6a, and M3e.
DOI: 10.18739/a2w669897
title: NABOS II - Mooring Data 2013 - 2015

description: The primary goal of our mooring observations was to document water, heat, and salt transports and water mass transformations on the Siberian continental slope. Primary objectives included quantifying the structure and temporal variability of the main water masses and obtaining detailed information about Atlantic Water layer dynamics and seasonal variations. There are two types of moorings used by our program. One type uses the McLane Moored Profiler (MMP), designed and manufactured by McLane Research Laboratories, Inc. Technical information and description are available at http://www.mclanelabs.com. Our other type of mooring is conventional, consisting of Acoustic Doppler Current Profilers (ADCPs) and Sea-bird Electronics (SBE) instruments.
DOI: 10.18739/a2rf5kg53
title: NABOS - Water Quality and Physical Oceanography Data from the Eastern Eurasian and Makarov Basins, and Northern Laptev and East Siberian Seas in 2013

description: The 2013 research cruise in the Arctic Ocean aboard icebreaker Akademik Fedorov was the 9th annual expedition under the aegis of NABOS (=Nansen Amundsen Basin Observations System) conducted by International Arctic Research Center (IARC) University of Alaska Fairbanks, USA in partnership with Arctic and Antarctic Research Institute (AARI) St. Petersburg Russia. The main goal of the NABOS project is to provide quantitative assessment of circulation and water mass transformation along the principal pathways transporting water from the Nordic Seas to the Arctic Basin. Specific feature of this cruise was that it took place under conditions of substantially reduced summer ice cover over the major part of the Arctic Ocean. Reduced sea ice causes changes in the water column and in the overlying atmosphere. Documenting of these changes was the main target of the NABOS 2013 cruise. The scope of this goal and the opportunities of extended scientific research in the Arctic, provided during NABOS expeditions, encouraged scientific institutions from the US, Europe and Asia to raise funds, contribute to the cruise program and to send their personnel to the expedition, thus giving it a true multidisciplinary status. The information collected during the cruise is unique and very valid for understanding of the Arctic climate change. Important outreach component of the cruise was the Summer School, which provided an excellent opportunity for graduate students, PhD students and early career scientists from US, Europe, and Russia to learn about climate change in the Arctic and to participate in field experiments onboard.
DOI: 10.18739/a2ms3k255
title: NABOS II - Water Quality and Physical Oceanography Data from the Eastern Eurasian and Makarov Basins, and Northern Laptev and East Siberian Seas in 2013 - 2015

description: Our 2015 Arctic research cruise aboard the RV "Akademik Tryoshnikov" was the tenth expedition under the aegis of NABOS (the Nansen and Amundsen Basins Observational System) conducted by the International Arctic Research Center (IARC) at the University of Alaska Fairbanks (UAF) and the Applied Physics Laboratory (APL) of the University of Washington (UW), in partnership with the Arctic and Antarctic Research Institute (AARI, St. Petersburg, Russia) and Alfred Wegener Institute (AWI, Bremerhaven, Germany). The main goal of this NABOS project is to provide a quantitative assessment of circulation and water-mass transformation along the principal pathways transporting water from the Nordic Seas to the Arctic Basin. Specific features of the 2015 NABOS cruise, in addition to our "standard" cruise program, were our extensive mooring program and the eastward extension of our traditional area from the eastern Eurasian Basin to the northern East Siberian Sea. New, unique scientific data collected along the Eurasian and Makarov basin continental margin under extreme climatological conditions will be vital for understanding Arctic climate change. Eight moorings were recovered, and thirteen were deployed. Unfortunately we could not locate one of our moorings (M5), off Severnaya Zemlya; there is, however, a chance that a more extensive search on a future cruise will help recover this mooring. Due to a lack of ship time, we also did not have a chance to approach mooring M9, which has been deployed in the northern East Siberian Sea during the summer of 2008. We maintain hopes for the recovery of this mooring as well.
DOI: 10.18739/a2h12v81b
title: Collaborative Research: Eurasian and Makarov basins observational network targets changes in the Arctic Ocean

description: Responding to urgent needs for a long-term multidisciplinary observation system for understanding rapid high-latitude climate change in the Arctic Ocean, a Eurasian and Makarov Basin (EMB) observational network is proposed as an element of the Arctic Observing Network (AON). Three August-September cruises, one every two years, will be conducted, with extensive measurements along continental margins, a boundary current conduit; cruises will cover vast areas from Svalbard to the East Siberian Sea. The program ties together oceanographic, chemical, and ice observations using moorings, repeated oceanographic sections, and Lagrangian drifters to provide vital information about Arctic Ocean changes. The overarching goal of the study as an AON element is to compile a cohesive picture of the state and transformations of Atlantic Water (AW) in the EMB, with particular focus on three major observational targets: (1) along-slope AW transport by the boundary currents (2) interaction of AW branches with shelf waters, deep basin interior and upper ocean (3) EMB indications of changes in the upper ocean circulation. The proposed targets are broad in scope and pose a wide range of challenges to modern high-latitude observational oceanography. The EMB's size and location mean that this part of the Arctic Ocean is representative of pan-arctic conditions and processes, and therefore appropriate for long-term observing. Therefore, the project is an important element of the pan-AON. Graduate students will be supported; female and Alaska Native students will be encouraged to participate. Program outreach will culminate in 2013 with a shipboard summer school. Data and products, critically-needed benchmarks for Arctic satellite sea-ice and altimeter measurements, will be available per AON data policy.
DOI: 10.15468/dl.yamhda
title: Occurrence Download

description: A dataset containing 6 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "TaxonKey is one of (Nemosenecio yunnanensis B.Nord.)"
 ]
}

 The dataset includes 6 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027795-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a2c824f7z
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/a27h1dn3t
title: Cloud microphysical properties at Arctic atmospheric observatories: SHEBA

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/a23r0pt92
title: Cloud microphysical properties at Arctic atmospheric observatories: Eureka, Canada

description: This data set contains cloud microphysical properties data for Eureka, Canada. 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/a20000132
title: Cloud microphysical properties at Arctic atmospheric observatories: Barrow, Alaska

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/a2v698c8h
title: Cloud microphysical properties at Arctic atmospheric observatories

description: 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: 10.15468/dl.ks3umb
title: Occurrence Download

description: A dataset containing 214 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Lophocladia lallemandii (Mont.) F.Schmitz, 1893"
 ]
}

 The dataset includes 214 records from 13 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027796-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a2qj77z85
title: Cloud Properties Across the Arctic Basin from Surface and Satellite Measurements - An existing Arctic Observing Network

description: The work of this research grant involves the integration and analysis of measurements from the surface-based sites at SHEBA (Surface Heat Budget of the Arctic), Barrow, and the new observatory in Eureka, Canada, as well as satellite data over the northern polar region. In effect, this project will coordinate existing, yet disparate, Arctic cloud measurements into a coherent network of observations that are useful for understanding the broader roles of clouds in Arctic climate and for evaluating the performance of global models in the Arctic. The researchers will use measurements from a wide array of data sources to address questions related to the spatial and temporal variability of Arctic clouds. This research work addresses many stated objectives and goals for both SEARCH (Study of Environmental Arctic Change) project. SEARCH has identified the need for long-term observations of important Arctic climate parameters, such as clouds, and has recognized the value of coordinated surface-satellite activities, both of which are fundamental components of this grant. By making the link between disparate observations at multiple sites to a comprehensive, long-term cloud data set, this study is a combination of
DOI: 10.18739/a2ks6j54f
title: Warming and irradiance measurements in the Arctic: Determining the link between solar energy absorption and surface warming through long term observations

description: The Arctic is considered to be a sentinel system in terms of climate change. The western Arctic in particular has experienced the largest positive anomalies in open water fraction, solar energy input, and sea surface temperature. The attenuation of light in surface waters has been identified as one of the key uncertainties in the modeling of Arctic Ocean physical properties, and has been found to significantly impact the simulation of sea ice thickness and upper ocean heat content. The vertical partitioning of solar radiation absorbed in the mixed layer of the Arctic Ocean, and the type of light absorbing compounds present determine the magnitude of heating. This heat directly impacts the rate of sea ice melt. The objectives of the proposed research are to quantify the connection between seasonal warming of arctic surface waters and the absorption of solar energy, and additionally to identify the presence and seasonal cycling of materials responsible for this absorption. Seasonal changes in the attenuation of solar radiation within the sea ice and upper 30m of the water column will be measured at high temporal resolution (hourly) by a new proof of concept buoy system. Temperature and PAR (photosynthetically active radiation) irradiance measurements will be made using optical sensors paired with thermisters within the water column and sea ice. A fluorometer will be used to quantify chlorophyll, colored dissolved organic material (CDOM) and light backscattering within surface waters. These sensors will be used to calculate diffuse attenuation coefficients (Kd) within the ice and water column, and to determine the seasonal cycling of phytoplankton and CDOM under the ice. The relationship between these optical and temperature observations will enable us to constrain the daily water column absorption component of the Arctic heating budget. This approach will fill in gaps in the current Arctic Observing Network strategy, expanding the observations to include a determination of solar energy absorption, and seasonal cycling of optically active compounds, which are known to have a quantifiable impact on solar heating. The long range goal of this research is to work towards the closure of the Arctic heating budget by constraining an important and poorly understood term. The ultimate goal of this concept would see a network of these buoys throughout the Arctic, in both ice-covered and open waters. Our work plan includes several deployments in multiyear ice. The location of the buoys will be 1) Multi-year ice in the Beaufort gyre in early spring, 2) the Geomission ice base (previously Catlin Arctic Survey) in the Canadian Arctic in early spring. Data at this site will be augmented by additional measurements made whilst at the camp, along with complementary studies by other Geomission projects and 3) in the Beaufort Gyre, deployed by the Beaufort Gyre Exploration Project in late spring within their network of ice-tethered profilers.
DOI: 10.15468/dl.jebdt4
title: Occurrence Download

description: A dataset containing 4900 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((-16 36,13 36,13 62.3,-16 62.3,-16 36))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "TaxonKey is Cetorhinus maximus (Gunnerus, 1765)",
 "Year 2003-2021"
 ]
}

 The dataset includes 4900 records from 62 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027794-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a2g15tc0m
title: Collaborative Research: Investigating the Influence of Sea-surface Variability on Ice Sheet Mass Balance and Outlet Glacier Behavior using Records from Disko Bugt, West Greenland

description: This project will further understanding of ocean-ice-atmosphere interaction around the Jakobshavn Isbrae and Disko Bay region of west Greenland, with a particular focus on the role of sea surface temperature and sea ice variability in modulating past outlet glacier behavior and ice sheet/cap mass balance (snowfall and melt) over the past two centuries. The PIs will reconstruct past environmental conditions in the Disko and Baffin Bay region based on new glaciochemical and stratigraphic records from three 100-m deep ice cores, several firn cores, and geophysical studies from three sites surrounding Disko Bay. Their field activities will commence in 2013 with the primary ice coring activity in 2014 and lab and computation work following to derive climate reconstructions from the cores. The results will complement recent glaciological studies of regional ice dynamic behavior, as well as recent paleoceanographic and glacial geologic reconstructions of conditions from this area and era. Das and Frey will each supervise a full-time PhD student, and Evans will supervise undergraduate research assistants and senior theses. A high school science teacher will also participate in the field work and interact with students at his school in Massachusetts as well as from the ice.
DOI: 10.18739/a2b853j67
title: Collaborative Research: Impact of Storm Activity on Recent Changes in Arctic Sea Ice Mass Balance

description: This project is to investigate impacts of changes in storm track dynamics on the recent rapid reduction in Arctic sea ice extent and volume. The increase of storm intensity and frequency result in enhanced high-frequency synoptic-scale variations and feedbacks in the Arctic climate system, and may make an integrative contribution to the basin-wide sea ice reduction. The project studies build upon previous work, and combine model simulations with satellite products and in situ observations to integrate and delineate physical causes of sea-ice mass balance changes in the context of storm-induced air-ice-sea interactions. This research will bridge synoptic-scale weather activities and large-scale climate variability and changes. The expected outcome includes assembled schematics linking storm-induced synoptic-scale variation with recently observed rapid loss of Arctic sea ice mass. Changes in sea ice concentration/extent, thickness/volume, and heat budget terms at the air-ice-sea interface that follow the motion of identified storms will be compiled.
DOI: 10.18739/a26h4cr23
title: Coordination, Data Management and Enhancement of the International Arctic Buoy Programme [1979-2016]

description: This project is a renewal of the National Science Foundation (NSF) funding of the International Arctic Buoy Programme (IABP) through the U.S. Interagency Arctic Buoy Program (USIABP). The project will coordinate data management and deployment of enhanced buoys by the USIABP. The IABP provides long-term observations from the Arctic Ocean which are essential for Arctic forecasting and research. This project supports a network of automatic data buoys to monitor synoptic-scale fields of surface air pressure, air temperature, and ice motion throughout the Arctic Ocean, an activity that was recommended by the National Academy of Sciences in 1974. University of Washington s Applied Physics Laboratory (APL) initiated the program in 1978 and became the IABP in 1991 to provide meteorological and oceanographic data for real-time operational requirements and research purposes including support to the World Climate Research Programme and the World Weather Watch Programme. The observations from the IABP have been essential for: 1.) Monitoring Arctic and global climate change; 2.) Forecasting weather and sea ice conditions; 3.) Forcing, assimilation and validation of global weather and climate models; 4.) Validation of satellite data; etc. These observations provide the longest continuing record for the Arctic, and have been one of the cornerstones for environmental forecasting and studies of climate and climate change. The IABP is composed of 20 different research and operational institutions from 9 different countries (found at: http://iabp.apl.washington.edu/Participants.htm ). The IABP is funded and managed by participants of the program. Management of the IABP is the responsibility of the Executive Committee, and operation of the program was delegated to the Coordinator of the IABP, Ignatius Rigor.