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Air-sea fluxes and concentrations of methane and carbon dioxide from expedition SAS, Arctic Ocean, 2021

Air-sea fluxes of methane and carbon dioxide were measured directly using floating chamber methods, as well as atmopsheric and dissolved gas concentrations and...

Atmosphere-ocean carbon dioxide fluxes and gas transfer velocities during SWERUS-C3 Arctic expedition

Eddy covariance observations of atmosphere-ocean fluxes of CO₂; dissolved CO₂ in surface waters, and derived gas transfer velocities during the SWERUS-C3...

Atmospheric methane and carbon dioxide and surface water methane from the SWERUS-C3 Arctic Ocean expedition in 2014, leg 1

Atmospheric observations of CH₄ and CO₂ above the Eastern Arctic Ocean, and dissolved CH₄ in surface waters of the Eastern Arctic Ocean in July and...

Atmospheric methane and carbon dioxide from the SWERUS-C3 Arctic Ocean expedition in 2014, leg 2

Shipborne atmospheric measurements of methane (CH₄) and carbon dioxide (CO₂) from the Eastern Arctic Ocean in August and September 2014. This dataset...

Carbon isotope ratio (δ¹³C) in atmospheric methane from the SWERUS-C3 Arctic Ocean expedition in 2014

Shipborne observations of methane isotopic ratio (δ¹³C) from the Eastern Arctic Ocean in July and August 2014. This dataset provides rare measurements of...

Methane and carbon dioxide fluxes, temperature and relative humidity at Mellersta Harrsjön lake, Stordalen Mire, Abisko, 2015

Emitted bubble, methane (CH₄) and carbon dioxide (CO₂) at water surface were measured by an automatic bubble counter (ABC) equipped with a pressure sensor...

Methane bubble fluxes from subarctic lakes on the Stordalen Mire, Abisko, Northern Sweden

This dataset provides measurements of the bubble flux of methane (CH₄), a strong climate forcing trace gas, to the atmosphere from three subarctic lakes...

Methane concentrations from subarctic lakes on the Stordalen Mire, Abisko, Northern Sweden

This dataset provides concentration measurements of dissolved methane (CH₄), a strong climate forcing trace gas, in the water column of three subarctic lakes...

Methane concentrations from surface water on the Stordalen Mire, Abisko, Northern Sweden

This dataset provides surface concentration measurements of dissolved methane (CH₄), a strong climate forcing trace gas, in the surface water of three lakes...

Methane diffusive fluxes from subarctic lakes on the Stordalen Mire, Abisko, Northern Sweden

This dataset provides measurements of the diffusive flux of methane (CH₄), a strong climate forcing trace gas, to the atmosphere from three subarctic lakes...

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...

Content of carbon isotopes (¹³C and ¹⁴C) in organic carbon pools in terrestrial Siberia

This dataset represents a literature compilation of carbon isotope data of four terrestrial organic carbon pools, (1) litter and organic layers in northern...

Water chemistry and geospatial characteristics of different sub-catchments in the Mackenzie River basin, Canada

The dataset presents a water chemistry characterisation in 19 different locations across the Mackenzie River basin collected in June 2018 and repeated samples...