Methane flux from closed chamber with spectrometer across two thermokarst lake ecosystems, 2018, Interior Alaska (US)

Elder, Clayton D.; Hanke, Philip; Anthony, Katey M. Walter; Thompson, David R.; Miller, Charles E.; Thorpe, Andrew K.

This dataset provides diffusive methane (CH4) fluxes collected from two thermokarst lakes in the Goldstream Valley, north of Fairbanks in interior Alaska. Fluxes were collected from the littoral zones, adjacent shoreline, and upland vegetation. The data were collected during July 2018. Measurements were made using a mobile, closed chamber technique where chamber air was recirculated through a Los Gatos Research (LGR) Ultraportable Cavity Ring-down Spectrometer. The chamber was large enough to enclose emergent and upland vegetation up to 1.5 m in height, allowing plant-facilitated fluxes to be measured. These in situ measurements were used to verify spatial patterns in methane flux (i.e., exponential decay with distance from water) detected by NASA's Next Generation Airborne Visible/Infrared Imaging Spectrometer (AVIRIS-NG).

Citation

In order to use these data, you must cite this data set with the following citation:

Elder, C., P. Hanke, K.W. Anthony, D.R. Thompson, C.E. Miller, and A.K. Thorpe. 2020. ABoVE: Methane Flux across Two Thermokarst Lake Ecosystems, Interior Alaska, 2018. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1778

This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use Policy.

Acknowledgments

This research was performed with support from NASA ABoVE under NASA Terrestrial Ecology Program "Imaging Arctic Methane Plumes".

Contact

ORNL DAAC

Metadata Access

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Data and Resources

Additional Info

Field Value
Identifier DOI:10.3334/ORNLDAAC/1778
Project(s) Arctic-Boreal Vulnerability Experiment (ABoVE)
Institute Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Source https://doi.org/10.3334/ORNLDAAC/1778
Publication Date 2020-06-26
Version 1.0
Product diffusive methane (CH4) fluxes collection
Sensor closed chamber with Los Gatos Research (LGR) Ultraportable Cavity Ring-down Spectrometer
Files
  1. CH4 Flux BigTrail Goldstream User Guide html
  2. CH4 Flux BigTrail Goldstream AK csv file
  3. CH4 Flux BigTrail Goldstream User Guide pdf file
Variables [Units]
  1. plot_id: Plot ID number
  2. lake_id: BTL = Big Trail Lake or GSL = Goldstream Lake
  3. latitude: Latitude [decimal degrees]
  4. longitude: Longitude [decimal degrees]
  5. date: Sampling date [YYYY-MM-DD]
  6. methane: Methane flux: mmol methane/m2/hr [mmol CH4 m-2 hr-1]
  7. flux_error: Methane flux error: mmol methane/m2/hr. [mmol CH4 m-2 hr-1]
  8. distance_from_water: Distance from open water to where the measurement was made. “0s” refer to fluxes that were measured over open water surfaces. Other distances from water indicate measurements of vegetation adjacent to a lake and on transects extending radially away from a lake. [m]
  9. distance_error: The uncertainty on the accuracy of the GPS system used to measure the distance from open water. [m]
Region Interior Alaska
Spatial Reference EPSG:4326 WGS 84
Spatial Resolution Multiple areas at each lake. Measurements were made every 3-5 meters across the littoral zone and along transects extending radially from the shorelines
Spatial Coverage Latitude 64.91509 to 64.92071, Longitude -147.850236 to -147.81864
Temporal Coverage 2018-07-17 to 2018-07-29
Temporal Resolution One-time measurements
Format CSV
Is Supplement To

Elder, C.D., D.R. Thompson, A.K. Thorpe, P.Hanks, K.M.W. Anthony, and C.E. Miller. 2020. Airborne Mapping Reveals Emergent Power Law of Arctic Methane Emissions. Geophysical Research Letters, Vol 47, 3. https://doi.org/10.1029/2019GL085707
Related to

Miller, C.E., R.O. Green, D.R. Thompson, A.K. Thorpe, M. Eastwood, I.B. Mccubbin, W. Olson-duvall, M. Bernas, C.M. Sarture, S. Nolte, L.M. Rios, M.A. Hernandez, B.D. Bue, and S.R. Lundeen. 2019. ABoVE: Hyperspectral Imagery from AVIRIS-NG, Alaskan and Canadian Arctic, 2017-2018. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1569

Dataset extent