Inorganic Carbon Isotopes and Chemical Characterization of Watershed Drainages, Barrow, Alaska, 2013

DOI: https://doi.org/10.5440/1221564
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NGEE Arctic Record ID: NGA027
Data Version: 1.0
Abstract

Data include results from geochemical and isotopic analyses for samples collected in Barrow, Alaska during July and September 2013. Samples were soil pore waters from 17 drainages that could be interlake (basins with polygonal terrain), different-aged drain thaw lake basins (young, medium, old, or ancient), or a combination of different aged basins. Samples taken in different drainage flow types at three different depths at each location in and around the Barrow Environmental Observatory. This dataset used in Throckmorton, et al. 2015. New variables added 2020-09; original data did not change. This dataset contains 2 csv files and 1 pdf.

The Next-Generation Ecosystem Experiments: Arctic (NGEE Arctic), was a research effort to reduce uncertainty in Earth System Models by developing a predictive understanding of carbon-rich Arctic ecosystems and feedbacks to climate. NGEE Arctic was supported by the Department of Energy's Office of Biological and Environmental Research.

The NGEE Arctic project had two field research sites: 1) located within the Arctic polygonal tundra coastal region on the Barrow Environmental Observatory (BEO) and the North Slope near Utqiagvik (Barrow), Alaska and 2) multiple areas on the discontinuous permafrost region of the Seward Peninsula north of Nome, Alaska.

Through observations, experiments, and synthesis with existing datasets, NGEE Arctic provided an enhanced knowledge base for multi-scale modeling and contributed to improved process representation at global pan-Arctic scales within the Department of Energy's Earth system Model (the Energy Exascale Earth System Model, or E3SM), and specifically within the E3SM Land Model component (ELM).

Authors
Heather Throckmorton (throckmorton@gmail.com)
Jeff Heikoop (jheikoop@lanl.gov) 0000-0001-7648-3385
Karis Mcfarlane (mcfarlane3@llnl.gov) 0000-0001-6390-7863
Brent Newman (bnewman@lanl.gov) 0000-0001-9177-8675
Cathy Wilson (cjw@lanl.gov) 0000-0001-9896-0912
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Dataset Citation
Heather Throckmorton, Jeff Heikoop, Karis Mcfarlane, Brent Newman, Cathy Wilson. 2015. Inorganic Carbon Isotopes and Chemical Characterization of Watershed Drainages, Barrow, Alaska, 2013. Next Generation Ecosystem Experiments Arctic Data Collection, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee, USA. Dataset accessed on [INSERT_DATE] at https://doi.org/10.5440/1221564.
Dates
2013-07-10 - 2013-09-09
Geographic Location
NGEE Arctic Utqiagvik (Barrow), Alaska
North71.35
South71.2
East-156.4
West-156.7
Place Keywords:
Intensive site 1 | Barrow, Alaska | Area C | Area D | DTLB2 | Area B
Subject Keywords:
Dissolved methane | Dissolved inorganic carbon | soil pore waters | geochemical analyses | isotopic analyses |
GCMD Keywords
EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY
Methodology
For the water collection, surface waters were collected as grab samples from the edges of drainages. For shallow active layer samples, one stainless steel drive point sampler was installed at each sampling location. Tubing was installed into the drive point opening, and water was slowly siphoned into 1 L bottles using a hand-pump vacuum. For the collection of deeper samples, 14-20 macro-rhizon samplers were installed in an array down to the frost table. Multiple macro-rhizons were used to obtain sufficient water volume for chemical analyses. For field measurements, Fe2+, temperature, DO, and pH were measured in the field on unfiltered pore waters immediately after extraction. Fe2+ was measured with a (Ferrous) Color Disc Test kit, DO with a Hach luminescence DO meter, and temperature with a thermal meter with internal temperature reference. Laboratory analyses were performed using EPA and other standard published methods.
Related References
Throckmorton, H. M., J. M. Heikoop, B. D. Newman, G. L. Altmann, M. S. Conrad, J. D. Muss, G. B. Perkins, L. J. Smith, M. S. Torn, S. D. Wullschleger, et al. (2015), Pathways and transformations of dissolved methane and dissolved inorganic carbon in Arctic tundra watersheds: Evidence from analysis of stable isotopes, Global Biogeochem. Cycles, 29,1893–1910, doi:10.1002/2014GB005044
Related Identifiers
Identifier: 10.1002/2014GB005044
Type: DOI
Relation: IsCitedBy
Metadata Contact
Contact information for the individual or organization that is knowledgeable about the data.
Person: Heather Throckmorton
Organization: Los Alamos National Laboratory (with Massachusetts Institute of Technology as of 1/2016)
Email: heather.throckmorton@gmail.com
Point of Contact
Contact information for the individual or organization that is knowledgeable about the data.
Person: Elizabeth Miller
Organization: Los Alamos National Laboratory
Email: millerl@lanl.gov
Dataset Usage Rights
Public Datasets

This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0.

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Distribution Point of Contact
Contact: Data Center Support
Organization: Next-Generation Ecosystem Experiments (NGEE) Arctic Project, Oak Ridge National Laboratory
Email: support@ngee-arctic.ornl.gov