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Title: 2019 Final Technical Report (Grant#DE-SC0014085) Northern Arizona University Multifactor Experiment and Model Integration to Determine the Regional Vulnerability of Permafrost Carbon to Climate Change

Abstract

The major research goal of this project was to understand and quantify the fate of carbon stored in permafrost ecosystems using a combination of field and laboratory experiments to measure and model isotope ratios and carbon fluxes in a tundra ecosystem exposed to experimental warming. Field measurements centered on a two-factor experimental warming to increase air and soil temperatures alone, and in combination, at a tundra field site in Alaska. A second manipulation of water table was embedded within the warming treatment such that both major environmental factors (temperature, moisture) controlling ecosystem carbon dynamics were experimentally altered. The experiment was interfaced with modeling activities using both data assimilation and forward modeling approaches. Models were used to make forecasts of ecosystem carbon dynamics beyond the time frame and environmental space of the experiment itself. These results were linked with ongoing synthesis and model intercomparison activities through the Permafrost Carbon Network, which led to additional synthesis publications as a result of collaboration and data sharing from this project. As key outcomes, this project has produced new papers published in the peer-reviewed literature, archived datasets used for model-data intercomparisons, trained graduate students and postdoctoral researchers, and has raised awareness about the vulnerability ofmore » permafrost carbon to a wider audience.« less

Authors:
Publication Date:
Research Org.:
Northern Arizona Univ., Flagstaff, AZ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1572411
Report Number(s):
DOE-NAU-14085
DOE Contract Number:  
SC0014085
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Schuur, Edward. 2019 Final Technical Report (Grant#DE-SC0014085) Northern Arizona University Multifactor Experiment and Model Integration to Determine the Regional Vulnerability of Permafrost Carbon to Climate Change. United States: N. p., 2019. Web. doi:10.2172/1572411.
Schuur, Edward. 2019 Final Technical Report (Grant#DE-SC0014085) Northern Arizona University Multifactor Experiment and Model Integration to Determine the Regional Vulnerability of Permafrost Carbon to Climate Change. United States. doi:10.2172/1572411.
Schuur, Edward. Wed . "2019 Final Technical Report (Grant#DE-SC0014085) Northern Arizona University Multifactor Experiment and Model Integration to Determine the Regional Vulnerability of Permafrost Carbon to Climate Change". United States. doi:10.2172/1572411. https://www.osti.gov/servlets/purl/1572411.
@article{osti_1572411,
title = {2019 Final Technical Report (Grant#DE-SC0014085) Northern Arizona University Multifactor Experiment and Model Integration to Determine the Regional Vulnerability of Permafrost Carbon to Climate Change},
author = {Schuur, Edward},
abstractNote = {The major research goal of this project was to understand and quantify the fate of carbon stored in permafrost ecosystems using a combination of field and laboratory experiments to measure and model isotope ratios and carbon fluxes in a tundra ecosystem exposed to experimental warming. Field measurements centered on a two-factor experimental warming to increase air and soil temperatures alone, and in combination, at a tundra field site in Alaska. A second manipulation of water table was embedded within the warming treatment such that both major environmental factors (temperature, moisture) controlling ecosystem carbon dynamics were experimentally altered. The experiment was interfaced with modeling activities using both data assimilation and forward modeling approaches. Models were used to make forecasts of ecosystem carbon dynamics beyond the time frame and environmental space of the experiment itself. These results were linked with ongoing synthesis and model intercomparison activities through the Permafrost Carbon Network, which led to additional synthesis publications as a result of collaboration and data sharing from this project. As key outcomes, this project has produced new papers published in the peer-reviewed literature, archived datasets used for model-data intercomparisons, trained graduate students and postdoctoral researchers, and has raised awareness about the vulnerability of permafrost carbon to a wider audience.},
doi = {10.2172/1572411},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {10}
}

Works referenced in this record:

Biotic responses buffer warming-induced soil organic carbon loss in Arctic tundra
journal, June 2018

  • Liang, Junyi; Xia, Jiangyang; Shi, Zheng
  • Global Change Biology, Vol. 24, Issue 10
  • DOI: 10.1111/gcb.14325

Adding Depth to Our Understanding of Nitrogen Dynamics in Permafrost Soils
journal, August 2018

  • Salmon, Verity G.; Schädel, Christina; Bracho, Rosvel
  • Journal of Geophysical Research: Biogeosciences, Vol. 123, Issue 8
  • DOI: 10.1029/2018JG004518

Large loss of CO2 in winter observed across the northern permafrost region
journal, October 2019

  • Natali, Susan M.; Watts, Jennifer D.; Rogers, Brendan M.
  • Nature Climate Change, Vol. 9, Issue 11
  • DOI: 10.1038/s41558-019-0592-8