On the relationship between methane production in anaerobic incubations of peat material and in-situ methane emissions

These files are meant to accompany the publication:

On the relationship between methane production in anaerobic incubations of peat material and in-situ methane emissions 

Alexandra B. Cory1, Rachel M. Wilson1*, Olivia C. Ogles1, Patrick M. Crill2, Zhen Li3, Kuang-Yu Chang3, Samantha Bosman1, EMERGE Project Coordinators4, Isogenie Field Team5, Virginia I. Rich3, and Jeffrey P. Chanton1

1Department of Earth, Ocean, and Atmospheric Science, Florida State University, Tallahassee, FL, USA

2Dept of Geological Sciences and Bolin Centre for Climate Research, Stockholm University; Stockholm, 106 91 Stockholm, Sweden

3Department of Microbiology, The Ohio State University, Columbus, OH, USA

4Lawrence Berkeley National Laboratory; Berkeley, CA, USA.

5EMERGE Project Coordinators list of authors and affiliations appears in Acknowledgements.

Corresponding author: Rachel M. Wilson ([e-mail])

Key Points:

·         Laboratory incubations predict field methane emissions from a peatland

·         Interannual variation is best represented by the modeled results

·         Daily-scale variation is driven by processes other than temperature and water table depth

This paper is being submitted for consideration for publication and includes the following archived files:

The file:

(1)    UPLOAD_chamber_CO2_and_CH4_with_T.xlsx contains 3 tabs of data measured from the field: (1) CH4 daily, (2) CO2 daily, (3) temp.

The first tab, CH4 daily contains the measured methane fluxes from the field auto chambers spanning 2012-2018. Column headers are

            Date:  date of year measurement taken

            DOY:  day of year measurement taken

            seqday: sequential day of measurement since 01/01/2002

year: year of measurement

site: indicates the autochamber site from which the data are measured

cH4_flx (mg CH4/m2/d): measured methane emission in milligrams CH4 per m2 per day

gC/m2/d: fluxes in grams of C per m2 per day

gC/m2/y: fluxes in grams of C per m2 per year

The second tab, CO2 daily contains the measured CO2 fluxes from the field auto chambers spanning 2012-2018. Column headers are similar to the CH4 daily tab revised for CO2 when appropriate.

The third tab, temp provides the temperature in the peat below the surface at 50cm, 20cm and 10cm for 2012-2018.

(2)    UPLOAD_Incubation_All_Temp_Timesaeries_Data.xlsx contains the CO2 and CH4 production for the incubation vials at the various temperature treatments. The headers are:

Habitat: indicates the habitat type from which the incubated peat was taken

Depth: indicates shallow (9-19cm) peat vs. deep (25-35cm) peat

Temp_C: indicates the temperature at which the incubation was conducted in °C

Sample: gives a laboratory unique sample identification code

Day: indicates day of incubation

CH4_umoles_gDry: is the accumulated CH4 production in micromoles per g dry weight of peat

CO2_umoles_gDry: is the accumulated CO2 production in micromoles per g dry weight of peat.

(3)    Fen Python Code and Bog Python Code contain all the files required to recreate the modeling results for the Fen and bog respectively.