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1. Environmental conditions and C and N uptakes of phytoplankton in Russian Chukchi sea, 2009 [KPDC_ECCNUPRC_2009]
It is very important to study the Chukchi Sea and Arctic Ocean in order to understand the global marine ecosystems responding to the current climate changes, but there have been not much study because ...


2. Collaborative Research: Replicate Coring at WAIS Divide to Obtain Additional Samples at Events of High Scientific Interest [severinghaus_1043421]
This award supports a project to obtain samples of ice in selected intervals for replication and verification of the validity and spatial representativeness of key results in the WAIS Divide ice core, ...


3. Collaborative Research: The Taylor Glacier, Antarctica, Horizontal Ice Core: Exploring changes in the Natural Methane Budget in a Warming World and Expanding the Paleo-archive [petrenko_1245659]
This award supports a project to use the Taylor Glacier, Antarctica, ablation zone to collect ice samples for a range of paleoenvironmental studies. A record of carbon-14 of atmospheric methane (14CH4) ...


4. Fugitive Gases (Helium, Neon, and Oxygen) in the WAIS Divide Ice Core as Tracers of Basal Processes and Past Biospheric Carbon Storage [severinghaus_1143619]
This award supports a project to extend the study of gases in ice cores to those gases whose small molecular diameters cause them to escape rapidly from ice samples (the so-called "fugitive gases"). ...


5. Methane isotope variations covering the Holocene from the WAIS Divide core [NSIDC-0649]
This award supports a project to better predict how natural CH4 emissions will respond to and force future climate change through a detailed study of the global biogeochemical cycles that control ...


6. Chemistry and Dynamics of Atmospheric Oxidation of Volcanic Sulfur [Cole-Dai0337933]
This dataset contains chemical measurements of volcanic sulfate deposits in Antarctic snow, in a collaborative project between South Dakota State University (SDSU, Jihong Cole-Dai, PI) ...


7. Snow, sea ice, slush, brine and seawater: Oxygen isotopic ratio data from the SIPEX II voyage of the Aurora Australis, 2012 [SIPEX_II_Oxygen_Isotope_Ratio]   PARENT DIF
During the ice stations, sea ice, brine/slush, snow and under-ice water sampling were collected for oxygen isotopic ratio. Ice cores were collected using a Kovacs 9 cm diameter ice corer. The ice ...


8. 17O Excess from WAIS Divide, 0 to 25 ka BP [NSIDC-0596]
This data set contains the VSMOW-SLAP d17O, d18O, and 17O-excess data from the WAIS Divide Ice Core Project, Siple Dome and Taylor Dome, along with the published and VSMOW-SLAP normalized d17O, d18O, ...


9. Measurements of Trapped Air from Mullins Valley, Dry Valleys, Antarctica [NSIDC-0597]
These data describe the analyses of the elemental and isotopic composition of O2, N2, and Ar and total air content made on the trapped air from three shallow ice cores (<34m depth) collected during ...


10. BOREAS TF-04 CO2 AND CH4 SOIL PROFILE DATA FROM THE SSA [BOREAS_TF4SSASP]
The BOREAS TF-04 team measured distributions of carbon dioxide (CO2) and methane (CH4) concentrations for the upper 5 meters of soil and unsaturated zone at the mature stand, upper 6 m at the 20-year ...


11. BOREAS TE-05 CO2 Concentration and Stable Isotope Composition [BOREAS_TE5AIRS]
The BOREAS group TE-05 collected measurements in the NSA and SSA on gas exchange, gas composition and tree growth. This data set contains measurements of the concentration and stable carbon (13C/12C) ...


12. BOREAS TE-05 Leaf Carbon Isotope Data [BOREAS_TE5LCISO]
The BOREAS group TE-05 collected measurements in the NSA and SSA on gas exchange, gas composition and tree growth. This documentation describes leaf carbon isotope data that were collected in 1993 ...


13. BOREAS TE-05 Tree Ring and Carbon Isotope Ratio Data [BOREAS_TE5TREER]
These data include tree ring widths and cellulose carbon isotope data from coniferous trees collected at the BOREAS NSA and SSA by the BOREAS TE-05 team. Ring width data are provided for both Picea ...


14. Shallow coring in Wilhelm II Land [ASAC_1109]
Shallow firn core data including oxygen isotope, hydrogen peroxide, electrical conductivity and firn density. Firn core data were collected on two separate trips - hence the two sets of dates. The ...


15. An environmental record of lead isotopes over four centuries at Law Dome, Antarctica [ASAC_1092]
Antarctic ice provides an archive of Earths atmospheric composition over time. It therefore records evidence of human impact on the atmosphere. Lead is a toxic element, whose isotopic fingerprint ...


16. The distribution of volatile and metallic elements in the Macquarie Island glasses and melt inclusions [ASAC_1073_1142]
Primary sulfur abundances and the oxidation state of sulfur in the Macquarie Island glasses and melt inclusions: implications for the sulfur budget during seafloor alteration. The distribution of ...


17. Crystalline rocks of the Antarctic Peninsula [dlb_APgeothermochron]
This dataset consists of: (1) a suite of crystalline rocks (primarily granitoids & quartzites, with subordinate gneisses, schists, volcanic rocks, and mafic intrusive rocks) collected from the Antarctic ...


18. Methyl Bromide Measurements in the Taylor Dome M3C1 Ice Core [NSIDC-0598]
The data set includes methyl bromide (CH3Br) measurements made on air extracted from 70 samples from the Taylor Dome M3C1 ice core. CH3Br was measured in air from the Taylor Dome ice core to reconstruct ...


19. Carbonyl Sulfide Measurements in the Taylor Dome M3C1 Ice Core [NSIDC-0599]
The data set includes carbonyl sulfide (COS) measurements made on air extracted from 53 samples from the Taylor Dome M3C1 ice core. COS was measured in air from the Taylor Dome ice core to reconstruct ...


20. Methyl Chloride Measurements in the Taylor Dome M3C1 Ice Core [NSIDC-0600]
This data set includes methyl chloride (CH3CI) measurements made on air extracted from 62 samples from the Taylor Dome M3C1 ice core in East Antarctica. CH3CI was measured in ...


21. LBA-ECO ND-30 Nutrient Analysis and Gas Fluxes, Forest Chronosequences, Para, Brazil: [ND30_LITTER_PARA]
This data set provides fine litterfall mass and nutrient concentrations from samples collected at chronosequences established at Sao Francisco do Para and Capitao Poco, Para, Brazil. Nitrogen (N) ...


22. LBA-ECO CD-08 Leaf Carbon, Nitrogen, LAI, and Isotope Data, Manaus, Brazil: 2001 [CD08_LEAF_ISOTOPES_MANAUS]
This data set provides measurements for carbon (C), nitrogen (N), leaf area index (LAI), and carbon isotope ratio data (13C and 14C) of leaves sampled at the Manaus ZF2 Jacaranda transect area, Amazonas, ...


23. Iron, manganese and aluminium in East Antarctic snow and ice cores [trace_metals]
Iron, manganese and aluminium concentrations have been determined in modern and ancient East Antarctic snow from sea-ice and continental sites. Modern snow samples were collected from sites in Prydz ...


24. LBA-ECO CD-06 Carbon Cycling in Rivers in Amazonas and Acre, Brazil: 2005-2006 [CD06_CARBON_RESPIRATION]
This data set provides measured and calculated variables describing the carbon pools in river waters, CO2 respired from the water and total amount of CO2 evaded, dissolved oxygen isotopes (delta 18O-O2), ...


25. LBA-ECO CD-09 Soil and Vegetation Characteristics, Tapajos National Forest, Brazil [CD09_SOILS_VEG_TAPAJOS]
This data set reports the results of soil and vegetation surveys at four distinct areas within the Tapajos National Forest (TNF), 50 to 100 km south of Santarem, Para, Brazil, in November 1999. At ...


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