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Terrestrial dissolved organic carbon in northern permafrost from 2000 – 2022

Liam Heffernan, Dolly N. Kothawala, Lars J. Tranvik

This dataset contains dissolved organic carbon (DOC) concentrations and ancillary biogeochemical and environmental data, collected from previously published articles across the circumpolar permafrost north.

The dataset highlights patterns in DOC concentrations across 8 different terrestrial ecosystem types, highlights potentially vulnerable areas to DOC mobilisation upon permafrost thaw, and assesses an important fraction in constraining uncertainty in the magnitude and location of the permafrost carbon feedback.

The dataset was generated after performing a systematic review of publications pertaining to terrestrial DOC concentrations in the top 3 metres of the northern circumpolar permafrost region. It contains 2,276 DOC concentrations collected extracted from 111 peer-reviewed articles published between 2000 and 2022.

Terrestrial Soil Permafrost carbon Dissolved organic carbon Permafrost soils Systematic review

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Citation

Liam Heffernan, Dolly N. Kothawala, Lars J. Tranvik (2024) Terrestrial dissolved organic carbon in northern permafrost from 2000 – 2022. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/heffernan-2024-doc-1

References

Heffernan, L., Kothawala, D. N., and Tranvik, L. J.: Review article: A systematic review of terrestrial dissolved organic carbon in northern permafrost, The Cryosphere Discuss. [preprint], https://doi.org/10.5194/tc-2023-152, in review, 2023.

Data description

The data is provided in a spreadsheet (xlsx file) containing two sheets, listed below.

  1. READ ME contains descriptions of all column headers and data. It provides units of measurement for each and explains nomenclature used throughout the dataset.

  2. data contains 3,346 data entries over 133 columns. The primary data here are dissolved organic carbon concentrations extracted from 111 studies.

Each entry contains a reference number, reference to the publication, DOI, site coordinates (latitude and longitude), and a number of site descriptors. It also contains ~60 other biogeochemical parameters that were extracted along with DOC concentrations.

Column_Name Variable_Name Units_Info
NUM Study number -
Reference Reference -
DOI Study DOI -
Lat Latitude Decimal Degrees
Long Longitude Decimal Degrees
EcoRegion Ecoclimatic regions as define by Olson et al. 2001 CB,SB,ST,AT
Permafrost Zone Permafrost region where the study took place. Determined by mapping the cooridnates over Brown et al. (1997) permafrost cover map N,S,D,C
PfConA Permafrost Present Y/N
PfTh Permafrost Thaw Present Y/N
Site Site Name -
SiteID Shortened SiteID -
Country Country -
ID Measurement location ID -
Ecosystem Ecosystem Classification
SiteDescrip Site Description -
MicroL Micro-landscape feature -
Disturb Is there study site pristine or disturbed? P/D
Disturb.Type Type of disturbance F, ALT, TT, TA
YSD Years since disturbance -
Incub.Days Number of daysd incubation experimanet ran for -
Therm.Type Type of thermokasrt feature sampled TB, TF, TSt, TP, TS, ALD, G, ALT, E
ShoulderSeason Shoulder Season Y/N
Seas Season/s T, S, F, W
Year.P Publication Year year
Year.S Measurement year/s year
SampleDays Sampling Days Days
Month.Numbers Number of months that sampling took place over Months
SampMonths Sampling Months -
MonthCode Code used for assigning months A, B, C, D, E, F, G, H, I, H, K, L, M, N, O
Meth Method used for sampling W/S
Extraction Extraction method used to obtain sample Grab, Rhizon (shaking), K2SO4 (shaking), Rhizon, GW well, Piezometer, Shaken, Ice.Core, Centrifuged, Pump, Lysimeter, D.Leached, Leached, Dialysis
Filter Filter size used uM
DOC.meth.broad Method used to measure DOC Shimadzu, Technicon, Aiken, OI, FIA, Dichromate, Sulphochromic, Multi, Crystals
SUVA.meth Method used to measure SUVA Weisshar
Frozen.Samples Was filtrate frozen prior to analysis Yes/No
Acidifeid.Samples Was filtrate acidified prior to analysis Yes/No
Occ Occasions Sampling measurements
N Sample number Number of samples
GrowSL Growing Season Length Days
Elev Elevation m asl
MAAT Mean annual air temperature at site °C
MAP Mean annual precipitation mm
TPer Air Temperature °C
Runoff Annual runoff mm year⁻¹
Catch.Type Catchment classification L/U
Catch.Size Catchment size km²
SpefDis.water Specific discharge of water mm
SpefDis.DOC Specific discharge of dissolved organic carbon g m⁻²
SpefDis.POC Specific discharge of Particulate organic carbon g m⁻²
DOC.export Export rate of dissolved organic carbon per year g C m⁻² yr⁻¹
DOC.flux Flux rate of dissolved organic carbon g C m⁻² day⁻¹
Depth Depth of water/soil sample cm
Sample.Type Field based sample of laboratory based sample F, L, FM
Manip.Type Type of experimental manipulation that has been used on sample T, PR, W, Th
Soil.Class Soil taxonomy -
Soil.Type Organic or mineral O/M
Soil.Horiz Organic or mineral O/M/I
TSoilA Surface Soil Temperature °C
IncubTemp Incubation soil temperature °C
Incub.Combustion.Temp Temperature sample was heated to for exeriment °C
Twater Water Temperature °C
WTAv Water Table Average cm
SoilMoist Soil Moisture %
SoilMoistCon Soil Moisture Depth cm
Incub.state Soil moisture content g kg⁻¹
Org Organic Layer Depth cm
Thaw Thaw Depth cm
ActiveLayer Active layer depth cm
ThermHoriz Thermal horizon of soil sample V, AL, P, PF, W, TS
BD Bulk density of soil g cm⁻³
Soil.C Soil C of sample g C kg⁻¹
Soil.N Soil N of sample g N kg⁻¹
C/N Soil C:N ratio -
13Csoil Soil 13 C ‰
C.Stock Soil organic carbon stock kg C m⁻²
N.stock Soil organic nitrogenitrogen stock kg N m⁻²
pH pH of water/soil sample -
EC Electrical conductivity uS cm⁻¹
DOC dissolved organic carbon volumetric concentration mg L⁻¹
DOC.m dissolved organic carbon volumetric concentration median mg L⁻¹
POC Particulate organic carbon concentration mg L⁻¹
DIC DIC concentration mg L⁻¹
BDOC.v dissolved organic carbon loss mg L⁻¹
BDOC.m dissolved organic carbon loss mg C kg⁻¹ soil⁻¹ day⁻¹
BDOC Biodegradable dissolved organic carbon %
T.BDOC Time over which Bdissolved organic carbon is lost -
13C-DOC d13C-dissolved organic carbon composition ‰
SUVA254 Specific ultraviolet absbronace at 254 nm L mg C⁻¹ m⁻¹
a250/a365 Absorption ratio -
a254 Absrobtion at 254 nm m⁻¹
a300 Absrobtion at 300 nm m⁻¹
a350 Absrobtion at 350 nm m⁻¹
a440(CDOM) CDOM absroption at 440 nm m⁻¹
S275-295 Spectral slope between 275-295 nm nm⁻¹
S350-400 Spectral slope between 350-400 nm nm⁻¹
Emmax Emission wavelength of maximum fluorescence of peak of C nm⁻¹
Fmmax/A340 Ratio of peak C intensity (QSE) (Fmax) to the absorption coefficient atr A340 QSE m
A340 Absrobtion at 340 nm m⁻¹
Sr Spectral slope coefficient -
E2:E3 E2:E3 ratio -
TDN.v Total dissolved nitrogen mg L⁻¹
DIN.v Dissolved inorganic nitrogen mg L⁻¹
DON.v Dissolved organic nitrogen mg L⁻¹
TDP Total dissoved phosphorus mg L⁻¹
DOC:DON dissolved organic carbon:dissolved organic nitrogen ratio -
NO3 Nitrate concentraion mg L⁻¹
NH43 Ammonium concentration mg L⁻¹
NO2 Nitrogen oxide concentraion μg NO2- g⁻¹ soil dry weight
PO4 Phosphate concentration mg L⁻¹
SO4 Sulphate concentration mg L⁻¹
Cl Chloride concentration mg L⁻¹
Ca2 Calcium ion concentraion mg L⁻¹
Si Silicone mg L⁻¹
HCO3 Bicarbonate mg L⁻¹
Na Sodium mg L⁻¹
K Potassium mg L⁻¹
Mg Magnesium mg L⁻¹
Al Aluminuium mg L⁻¹
Fe Iron mg L⁻¹
Cu Copper mg L⁻¹
Acetate Acetate concentration mg L⁻¹
Formate Formate concentration mg L⁻¹
Oxalate Oxalate concentration mg L⁻¹
dD Deuterium istope ‰
d18O Oxygen stable isotope ‰
disCO2 Dissolved CO2 ppmv
disCH4 Dissolved CH4 ppmv
CO2.flux.m2 Soil CO2 efflux µmol m⁻² s⁻¹
CO2.flux.soil Soil CO2 efflux mg CO2 g soil C⁻¹ days
CH4.flux.soil Soil CH4 efflux mg CH4 g soil C⁻¹ days
FI Fluorescence index -
BIX Freshness index -
HIX Humifcation index -

Contact information

Email address
[javascript protected email address]
Postal address

Liam Heffernan
Department of Earth Sciences
Vrije Universiteit
De Boelelaan 1105
1081 HV Amsterdam
Netherlands

Metadata

GCMD science keywords

Earth science > Land surface > Soils > Permafrost

GCMD location

Geographic Region > Arctic

Status

Completed

Dataset language

English

Project

The dataset is associated with the manuscript entitled "Assessment of terrestrial dissolved organic carbon in northern permafrost" which has been submitted to The Cryosphere for publication. This project is a systematic review of dissolved organic carbon concentrations and mobilization rates in terrestrial permafrost ecosystems published between 2000-2022. The project is funded by the Knut och Alice Wallenbergs Stiftelse (KAW 2018.0191).

Publisher

Bolin Centre Database

Begin date

2000-01-01

End date

2022-12-31

Dataset version

1

License

Creative Commons Attribution 4.0 International License (CC BY 4.0)

DOI

10.17043/heffernan-2024-doc-1

Published

2024-01-30 15:31:14

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