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Ice wedge polygon occurrence and geomorphology from LiDAR elevation data, 2012 and 2014, south of Prudhoe Bay, Alaska (US)
We mapped the occurrence of more than one million ice wedge polygons over a landscape of approximately 1,200 square kilometers, just south of Prudhoe Bay in northern Alaska,...
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Total above-ground biomass of 25 sites from 2018 central Lena Delta (RU)
Field investigations were performed in the central Lena Delta. In total, 25 sites were investigated. The sites were chosen to represent a variety of vegetation communities of...
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Dissolved methane and hydrochemical parameters in ice cores from 2017, Bykovsky Peninsula, Lena Delta
Data were analyzed to study the role of an winter ice cover for methane cycles of three different stages in the lake-lagoon-shelf transition in a region of rapidly thawing...
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Methane and nitrous oxide sea-air fluxes calculated from samples collected in the North American Arctic Ocean (2015–2018)
This dataset contains methane and nitrous oxide dissolved gas concentration, dissolved methane carbon isotope, and ancillary hydrographic data from research cruises in the North...
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Chamber measured methane transport through individual aerenchymous plants at a boreal fen and a bog
The presented dataset contains chamber measurements of methane transport (mg CH₄ g dry plant mass-1 day-1) through individual aerenchymous peatland plants and the ancillary data...
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Eddy covariance carbon fluxes and ancillary data, Samoylov Island, Lena River Delta, 2014-2015
This dataset contains fluxes of carbon dioxide and methane on an active flood plain in the Siberian Lena River Delta during the growing seasons 2014 and 2015 by means of the...
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Geochemistry of incubated permafrost and seawater from the western Canadian Arctic
We present geochemical and hydrochemical information on individual permafrost and seawater samples from the Yukon Coast in the western Canadian Arctic used for an incubation...
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Anaerobic incubation measurements (CH4+CO2) and microbe quantification, Lena Delta, 2018
The data sets were made during the summer 2021, with samples collected from three cores, at two depths (active and permafrost layers). In total, six samples (3 replicates by...
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UAV-based methane data from Barter Island, September 2017, Barrow, 1986-2017, Alaska (US)
Arctic permafrost stores vast amounts of methane (CH4) in subsurface reservoirs. Thawing permafrost creates areas for this potent greenhouse gas to be released to the...
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T-MOSAiC 2021 myThaw data set, Circum-Arctic
The Terrestrial Multidisciplinary distributed Observatories for the Study of the Arctic Connections (T-MOSAiC) 2021 permafrost thaw data set provides standardized measurements...
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Inorganic and organic hydrochemistry of lakes and ponds in continuous permafrost landscapes in the western Canadian...
Between 2006 and 2015 inorganic and organic hydrochemical parameters and stable water isotope characteristics were measured in lakes and ponds in continuous permafrost...
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Ground layer above-ground biomass of 39 sites from 2018 central Chukotka (RU) - Raw data of dry weight for each...
Field investigations were performed in four areas: a treeless mountainous tundra (16-KP-04; Lake Rauchuagytgyn area), tundra-taiga transition zone (16-KP-01, Lake Ilirney area)...
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Ground layer above-ground biomass of 25 sites from 2018 central Lena Delta (RU) - Raw data of dry weight for each...
Field investigations were performed in the central Lena Delta. In total, 25 sites were investigated. The sites were chosen to represent a variety of vegetation communities of...
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Fluorescent dissolved organic matter (FDOM) intensity (Parafac components and FDOM indices) in the surface water...
Fluorescent dissolved organic matter intensity was measured with an Aqualog®. Measurements were corrected for inner-filter effects and for the Raman and Rayleigh scattering... -
Remote sensing reflectance (Rrs) of the surface water during 4 expeditions from spring to fall in 2019, Mackenzie...
Vertical profiles of downwelling irradiance (Ed) and upwelling radiance (Lu) were measured during legs 2, 3, and 4 using a Compact-Optical Profiling System (C-OPS) in an ICE-Pro...
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Particle absorption (aP) in the surface water during 4 expeditions from spring to fall in 2019, Mackenzie Delta Region (CA)
Absorbance of particles retained on GF/F (0.7 µm) filters was measured using a Varian Cary 100 spectrophotometer equipped with an integrated sphere. Absorbance and reflectance...
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Phytoplankton pigment concentrations measured by HPLC in the surface water during 4 expeditions from spring to fall...
The determination of phytoplankton using high performance liquid chromatography (HPLC) is detailed in Hooker et al. (2005; doi:10.1364/AO.44.000553) and Ras et al. (2008;...
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Colored dissolved organic matter absorption (aCDOM) and spectal slopes (S) in the surface water during 4 expeditions...
Measurement of CDOM absorption was conducted from a water sample within 12 hours of collection using an UltraPath liquid waveguide system (World Precision Instruments, Inc.)... -
Stable water isotopes (δ18O, δD, d-excess) in the surface water during 4 expeditions from spring to fall in 2019,...
Water samples for stable isotopes were collected untreated in 10 mL HDPE vials, sealed tightly, stored in the dark at 4°C. Measurements were conducted at the laboratory facility...
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Temperature and salinity in the surface water during 4 expeditions from spring to fall in 2019, Mackenzie Delta Region (CA)
During Leg 1, the CTD (CTD RBR Maestro) was manually lowered in the water through an ice hole. During legs 2 to 4, the CTD (CTD RBR Concerto) was installed on a Seabird...