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Accumulation rates, isotopic and molecular data of terrestrial carbon in sediments of the Laptev Sea continental margin

This dataset contains isotopic (¹³C and ¹⁴C) and molecular biomarker data (lignin phenols, n-alkanes, n-alkanoic acids) of organic carbon in surface...

Biomarker and bulk organic carbon data for surface sediments across the Laptev Sea

This dataset was compiled for a study that aims to assess the fate of terrestrial organic carbon in the Arctic marine environment by exploring how it changes...

Bulk organic carbon and biomarker data for the marine sediment core SWERUS-L2-4-PC1, Chukchi Sea, Arctic Ocean

This dataset was created to reconstruct the historical remobilization of permafrost carbon from the Beringian landmass to the Chukchi Sea. We analyzed carbon...

Bulk organic carbon, isotopes and mineral surface area for surface sediments across the Laptev and East Siberian Sea

This dataset was compiled to quantify degradation of terrigenous organic carbon in surface sediments across the Laptev and East Siberian Sea. It includes raw...

Bulk organic carbon, isotopes and terrigenous biomarkers for the marine sediment core SWERUS-L2-31-PC1

This dataset contains biochemical data analyzed in the sediment core SWERUS-L2-31-PC1, an archive spanning over the past 27,000 years recovered from the...

Centennial-scale sediment records of organic matter supply and degradation status from the East Siberian Sea

Bulk properties (organic carbon content, nitrogen content, mineral surface area, stable and radiocarbon isotopes), as well as biomarker concentrations (lignin...

Concentrations of carbon, nitrogen, lignin and lipid biomarkers in subsea permafrost of the inner Laptev Sea

This dataset includes organic carbon and nitrogen content, ¹³C content of organic carbon, as well as concentrations of lignin phenols, n-alkanes, n-alkanoic...

Cross-shelf transport time and degradation rates for terrestrial organic matter in the Laptev Sea

This dataset contains compound-specific radiocarbon dates for long-chain fatty acids (specific terrestrial biomarkers) along a 600-km transect from the Lena...

Dissolved organic carbon (DOC) concentrations and its optical properties in the Laptev and East Siberian Seas 2003–2011

This dataset was compiled for a study that aims to assess spatial and interannual distributions of chromophoric dissolved organic matter in the Laptev and East...

Isotope data (Δ¹⁴C, δ¹³C and δD) for dissolved methane at the Outer Eurasian Arctic Shelf

Isotope data for dissolved methane determined in samples collected from vertical and bottom-water horizontal casts in the outer Laptev Sea. The data was...

Lithology and thermal data from subsea permafrost drillcores of the SE Laptev Sea

Lithology and thermal data from four drill cores used in a study that documents current rates and mechanisms of subsea permafrost degradation in the East...

Organic carbon data from the Eurasian Arctic Shelf

Percentage of permafrost organic carbon resequestered by iron oxides in the Eurasian Arctic Shelf. Overall, the 15 ± 5% in the Laptev Sea and 6.4 ± 5% in...

Seawater Carbonate System, Ocean Acidification and Related Parameters in the East Siberian Arctic Shelf Seas

This dataset builds on an order of magnitude more observations than reports to date on Ocean Acidification (OA) in the Arctic Ocean; and, for the first time in...

Sediment properties, carbon dioxide and oxygen fluxes from Siberian Arctic Ocean sediments collected in 2020

This dataset contains observational data on sediment properties and gas fluxes (carbon dioxide and oxygen) for 16 surface sediment samples from the Laptev Sea,...

Sources and accumulation rates of terrestrial carbon in circum-Arctic shelf sediments

This dataset contains terrestrial organic carbon (terrOC) mass accumulation rates in surface sediments of the seven circum-Arctic shelf seas, observational...

Surface ocean fugacity of carbon dioxide from expedition SAS, Arctic Ocean 2021

Measurements of the mole fraction of carbon dioxide (CO₂) in a gas stream equilibrated with surface ocean water, and the fugacity derived from it, were...

Terrigenous organic matter biomarker data at high spatial coverage over the East Siberian Arctic Shelf

This data set contains observations of molecular biomarkers for terrigenous organic matter (terr-OM) at high spatial coverage across the East Siberian Arctic...

The Circum-Arctic Sediment Carbon Database — Carbon, nitrogen and isotopes in sediment cores of the Arctic Ocean

This dataset is part of the Circum-Arctic Sediment Carbon Database (CASCADE) and contains data for sediment cores across the Arctic Ocean, which are divided...

The Circum-Arctic Sediment Carbon Database — Carbon, nitrogen, isotopes and biomarkers in surface sediments of the Arctic Ocean

This dataset is part of the Circum-Arctic Sediment Carbon Database (CASCADE) and contains carbon data of surface sediments across the Arctic Ocean. Surface...

The Circum-Arctic Sediment Carbon Database — CASCADE

The Circum-Arctic Sediment CArbon DatabasE (CASCADE) was established to curate data on concentrations of organic carbon (OC) and total nitrogen (TN), OC...

The Circum-Arctic Sediment Carbon Database — Gridded carbon, nitrogen and isotope data in surface sediments of the Arctic Ocean

This dataset is part of the Circum-Arctic Sediment Carbon Database (CASCADE) and contains gridded data of organic carbon (OC), total nitrogen (TN) and OC...

High-resolution bathymetry data from expedition SWERUS-C3 Leg 2, Arctic Ocean, 2014

Multibeam bathymetry from areas in the East Siberian Arctic Ocean and adjacent deep waters off the continental shelf. More specifically, mapped areas include...

Data from expedition LOMROG, Lomonosov Ridge, Arctic Ocean, 2007

The LOMROG (Lomonosov Ridge off Greenland) 2007 expedition was carried out during summer of 2007. The expedition worked in the central Arctic Ocean over...

Data from expedition SAS, Arctic Ocean, 2021

The Synoptic Arctic Survey (SAS) 2021 expedition was carried out during summer 2021 in the Arctic Ocean, covering a large area including parts of Amundsen...

Data from expedition SWERUS-C3, Arctic Ocean, 2014

The SWERUS-C3 (Swedish – Russian – US Arctic Ocean Investigation of Climate-Cryosphere-Carbon Interactions) expedition was carried out during the summer of...

General metadata from expedition SAS, Arctic Ocean, 2021

The Synoptic Arctic Survey (SAS) 2021 expedition was carried out during summer 2021 in the Arctic Ocean, covering a large area including parts of the Amundsen...

Ice station documentation from expedition SAS, Arctic Ocean, 2021

The dataset contains metadata and 353 files with photographs and field notes from the ice stations visited during the Synoptic Arctic Survey (SAS) 2021...

Coastal Yedoma deposits and continental shelf sediments in the Arctic Ocean silicon cycle collected in 2020

This dataset contains measurements on the water column chemistry, rates of dissolved silicon exchange between sediments and the water column, and amorphous...

CTD data from the SWERUS-C3 expedition 2014 in the Arctic Ocean

The data set includes CTD data (conductivity, temperature, and depth in the water column) from the SWERUS-C3 (Swedish-Russian-US Arctic Ocean Investigation of...

Discrete profile measurements of carbon dioxide, hydrographic and chemical data from expedition SAS, Arctic Ocean, 2021

This dataset includes discrete measurements of dissolved inorganic carbon, total alkalinity, pH (total scale), temperature, salinity, dissolved oxygen,...

Boron in seawater, ice, brine, lead, slush, snow, and under-ice water from expedition ARTofMELT, Arctic Ocean, 2023

This is the raw data for boron collected onboard the Swedish icebreaker Oden during the expedition ARTofMELT (Atmospheric Rivers and the Onset of Arctic Melt)...

Chemical data of depth profiles of stations in international water collected during the SWERUS-C3 Arctic expedition

Depth profiles of data from water samples collected by a rosette-CTD system in international waters during the second leg of the expedition SWERUS-C3. Noted...

Nitrous oxide data collected in the Siberian Arctic Ocean in summer 2014 and autumn 2020

This dataset includes observational data related to nitrous oxide (N₂O) in the Kara, Laptev and East Siberian Sea, generated during the ISSS-2020 expedition...

Seawater carbonate chemistry from CTD bottle samples during the Ryder 2019 expedition

Depth profiles of seawater pH and total alkalinity (TA) from water samples collected during the Ryder 2019 Expedition from coastal waters along northwestern...

Surface water data collected for the Arctic Ocean 2018 marine aerosol reference tank experiments

This dataset includes measurements of water temperature, salinity, chlorophyll a, dissolved organic carbon (DOC), dissolved organic nitrogen (DON), particulate...

Underway measurements of seawater pH and total alkalinity from the Ryder 2019 expedition

Continuous, underway measurements of seawater pH and total alkalinity (TA) were collected from the surface seawater intake system on board the Swedish...

Data from a modelling study to investigate North Atlantic sea surface temperature at the Eocene-Oligocene Transition

This dataset accompanies a study that investigates the evolution of North Atlantic sea surface temperature (SST) across the Eocene-Oligocene Transition (EOT)...

Age model and physical properties of sediment from the Arctic Siberian margin, core SWERUS-L2-31PC

Age model and sedimentological data for a marine sediment core collected on the Lomonosov Ridge adjoining the East Siberian shelf, Arctic Ocean. The dataset...

Eocene-Oligocene age planktonic and benthic foraminifera oxygen and carbon stable isotopes from the NKK-1 borehole, central Java

This data set involves geochemical paleoceanographic proxy records from a borehole drilled in the Nanggulan region of central Java, Indonesia, and includes...

Fish otoliths in sediment samples from expedition SAS, Arctic Ocean, 2021

This dataset contains metadata and 296 files with photographs of 325 fish otoliths (calcium carbonate structures in the heads of bony fishes) sampled from the...

In-situ Temperature, Thermal Conductivity and Heat Flow of East Siberian Margin Sediments

Summary of published data used to calculate marine heat flow at sediment coring stations on SWERUS-C3-L2 in 2014. The data file includes A.) Summary table of...

Late Holocene paleomagnetic secular variation records of sediment cores SWERUS-L2-2-PC1 and SWERUS-L2-4-PC1 from the Chukchi Sea

Geomagnetic field directions (inclination and declination) are reconstructed for two sediment cores for the past 4200 years. The sediment cores were collected...

Marine sediment core data from Chukchi Sea, Arctic Ocean, core SWERUS-L2-2-PC1

Data from sediment core SWERUS-L2-2-PC1. The core was collected during the SWERUS-C3 expedition with icebreaker Oden 2014. Core length: 8.2 m. Coring site:...

Marine sediment core data from Chukchi Sea, Arctic Ocean, core SWERUS-L2-4-PC1

Data from sediment core SWERUS-L2-4-PC1. The core was collected during the SWERUS-C3 expedition with icebreaker Oden 2014. Core length: 6.1 m. Coring site:...

Marine sediment core data from De Long Trough, Siberian margin and slope, Arctic Ocean

Sediment core data from four sites in the East Siberian Sea, Arctic Ocean. The cores were collected during the SWERUS-C3 expedition with icebreaker Oden 2014....

North Atlantic Eocene Oligocene foraminiferal stable isotope and Mg/Ca proxy data

Benthic and planktic foraminifera oxygen and carbon stable isotope measurements from four North Atlantic deep sea drill sites from the late Eocene to early...

Paleoceanographic proxy data sets from the Eocene-Oligocene boundary interval of ODP Site 1218, eastern Equatorial Pacific

Paleoceanographic proxy records from Ocean Drilling Program Site 1218 in the eastern equatorial Pacific (EEP): (1) stable isotope (δ¹⁸O and δ¹³C)...

Sea-ice biomarkers and total organic carbon from sediment of Holocene age collected in the southern Lincoln Sea in 2019

This dataset includes sea-ice related biomarkers and the amount of total organic carbon from 15 surface sediment samples and two gravity cores collected during...

The 3.6 ka Aniakchak tephra in marine sediments from the Chukchi Sea, Arctic Ocean

The eruption of the Alaskan Aniakchak volcano of 3.6 thousand years ago was one of the largest Holocene eruptions worldwide. The resulting ash is found in...

Sub-bottom profiling data from Herald Canyon, Chukchi Sea

Sub-bottom profiling data from Herald Canyon, Arctic Ocean, acquired using the Kongsberg SBP 120 (2–7 kHz; 3° × 3°) chirp sonar installed in icebreaker...

Miocene temperature portal

This data portal serves as a resource for investigators interested in the study of Miocene climate, about 23 to 5 million years ago. It collates a list of key...