Kaplan, Jed O; Melton, Joe R (2018): The Wetland and Wetland CH4 Inter-comparison of Models Project (WETCHIMP) data archive [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.887208

This archive contains the raw and post-processed model output used in the The Wetland and Wetland CH4 Inter-comparison of Models Project (WETCHIMP).

WETCHIMP Model Results README

Last update March, 2018

Jed O. Kaplan (jed.kaplan@arve-research.com)

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There are top-level directories in this archive, 'raw' and 'processed'.

The model short-names used throughout are explained below. All model results in the processed folder have been standardized and are organized by experiment number. That does not preclude them from having some remaining inconsistencies, however the majority have been removed. Model results used in Melton et al. 2012 Biogeosci Disc. are noted with an asterix in the description below. Further descriptions can be found in Wania et al. 2012 GMD.

Any questions:

Joe Melton joe.melton.sci@gmail.com

Aug 28 1012

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Processed files:

General file naming convention is

VAR_EXP#_MODEL.nc

where

VAR is one of:

amax_weta = annual maximal wetland areal extent (m^2)

mmax_weta = monthly maximal wetland areal extent (m^2)

mch4_e = monthly emitted to atmosphere CH4 flux density (g CH4 / m^2 of gridcell)

ach4_e = annual emitted to atmosphere CH4 flux density (g CH4 / m^2 of gridcell)

EXP# is the experiment number (1 - 6). For further information see Wania et al. 2012 GMD, Melton et al. 2012 Biogeosciences, and the WETCHIMP wiki (currently offline - contact Joe Melton for details).

NB: not all models submitted results for all experiments (see table in Wania et al. 2012)

MODEL is one of the following models (with a brief description of the model results):

Bern = LPJ-Bern results that include wetlands, rice, aerobic soil consumption

Bern_norice* = LPJ-Bern results excluding rice

Bern_noconsum* = LPJ-Bern results excluding rice and aerobic soil consumption

Bern_nowetsoil* = LPJ-Bern results excluding rice, aerobic soil consumption and wet mineral soils

CLM4Me* = CLM4Me results are the original CLM grid resolution (these include aerobic soil CH4 consumption)

DLEM = DLEM results including both wetlands, rice, and aerobic soil uptake

DLEM_norice* = DLEM results excluding rice but including aerobic soil uptake

DLEM_rice = DLEM results for rice only

IAPRAS* = IAP-RAS results, there are no monthly results for IAP-RAS. Wetland area is fixed for all experiments.

LPJ-WHyMe-1k.nc = equilibrium after 1000 years of spinup, CH4 fluxes are g CH4/ m^2 peatland

LPJ-WHyMe-1k-per-gridcell.nc = annual CH4 fluxes per gridcell (weighted by peatland area of each gridcell). equilibrium after 1000 years of spinup

LPJ-WHyMe-1k-sum.nc = annual CH4 fluxes from all peatlands, equilibrium after 1000 years of spinup

LPJ-WHyMe.nc* = equilibrium after 2000 years of spinup, CH4 fluxes are g CH4/ m^2 peatland

LPJ-WHyMe-per-gridcell.nc = annual CH4 fluxes per gridcell (weighted by peatland area of each gridcell). equilibrium after 2000 years of spinup

LPJ-WHyMe-sum.nc =annual CH4 fluxes from all peatlands, equilibrium after 1000 years of spinup

Orchidee_alt* = ORCHIDEE model results for all water table depths using the internal TOPMODEL based approach for inter- and intra-annual wetland extents.

Orchidee_altsat = ORCHIDEE model results for only saturated areas using the internal TOPMODEL based approach for inter- and intra-annual wetland extents.

Orchidee = ORCHIDEE model results for all water table depths using the prescribed Papa et al. 2010 inter- and intra-annual wetland extents.

Orchidee_sat = ORCHIDEE model results for only saturated areas using the prescribed Papa et al. 2010 inter- and intra-annual wetland extents.

SDGVM* = SDGVM

UVic = UVic-ESCM results interpolated to 0.5 degrees

UVic_nointerp*= UVic-ESCM results on their original grid

VIC = UW-VIC results for inundated + saturated areas##

VIC_sat = UW-VIC results for only saturated areas##

##(Note: UW-VIC results are preliminary)

WSL* = LPJ-WSL

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'raw' model results:

Each model has its own tarred and gzipped archive. An extended record is also available for ORCHIDEE (1932-1992). To open an archive after downloading use:

gunzip modelname.tar.gz

tar xvf modelname.tar

Once unpacked you will have all of the submitted files for that model. The full listing of variables, units, shortnames etc. can be requested from Joe Melton. If you have questions, Joe Melton can answer some or you might want to contact the modelling group that contributed the runs (see table in Wania et al. 2012 GMD for main contact for each model).