DOI: 10.5061/dryad.7sqv9s4wh
title: Variable influence of photosynthetic thermal acclimation on future carbon uptake in Australian wooded ecosystems under climate change

description: Climate change will impact gross primary productivity (GPP), net primary
 productivity (NPP), and carbon storage in wooded ecosystems. The extent of
 change will be influenced by thermal acclimation of photosynthesis – the
 ability of plants to adjust net photosynthetic rates in response to growth
 temperatures – yet regional differences in acclimation effects among
 wooded ecosystems are currently unknown.  We examined the effects
 of changing climate on 17 Australian wooded ecosystems with and without
 the effects of thermal acclimation of C3 photosynthesis. Ecosystems were
 drawn from five ecoregions (tropical savanna, tropical forest,
 Mediterranean woodlands, temperate woodlands, and temperate forests) that
 span Australia’s climatic range. We used the CABLE-POP land surface model
 adapted with thermal acclimation functions and forced with HadGEM2-ES
 climate projections from RCP8.5. For each site and ecoregion, we examined
 a) effects of climate change on GPP, NPP, and live tree carbon storage;
 and b) impacts of thermal acclimation of photosynthesis on simulated
 changes. Between the end of the historical (1976–2005) and projected
 (2070–2099) periods, simulated annual carbon uptake increased in the
 majority of ecosystems by 26.1 to 63.3% for GPP and 15 to 61.5% for
 NPP.  Thermal acclimation of photosynthesis further increased GPP
 and NPP in tropical savannas by 27.2% and 22.4% and by 11% and 10.1% in
 tropical forests with positive effects concentrated in the wet season
 (tropical savannas) and the warmer months (tropical forests). We predicted
 minimal effects of thermal acclimation of photosynthesis on GPP, NPP and
 carbon storage in Mediterranean woodlands, temperate woodlands and
 temperate forests. Overall, positive effects were strongly enhanced by
 increasing CO2 concentrations under RCP8.5. We conclude that the direct
 effects of climate change will enhance carbon uptake and storage in
 Australian wooded ecosystems (likely due to CO2 enrichment) and
 that benefits of thermal acclimation of photosynthesis will be restricted
 to tropical ecoregions.
description: These data include output and setting files for simulations
 produced using the CABLE-POP land surface model as described in the linked
 article.  For each of the 17 OzFlux study sites files provided
 are: CABLE-POP output for simulations with
 and without thermal acclimation of photosynthesis enabled for three
 periods.  Varying and static CO<sub>2</sub> simulation output
 is provided for the 2006-2099 period.<br> 
 1850-1900 (plume_out_cable_1850_1900.nc)
 1901-2005 (plume_out_cable_1901_2005.nc)
 2006-2099 (plume_out_cable_2006_2099.nc) 
 CABLE-POP setting files with and without thermal
 acclimation of photosynthesis enabled for three periods: 
 1850-1900 (cable_1850_1900.nml) 1901-2005
 (cable_1901_2005.nml) 2006-2099
 (cable_2006_2099.nml) 
 Vegetation parameter files: 
 pftlookup_sitename.csv
 veg_params_sitename.txt 
 Also included are two run scripts and a site
 list: run_cable-pop.sh: CABLE-pop
 runscript site_wrapper_future.sh: script containing
 run loop used to cycle through the 17 sites to run
 run_cable-pop.sh.
 OzFLUX_sitelist_GT_All.txt 
 CABLE-POP source code used for these simulations is located
 at https://trac.nci.org.au/trac/cable/branches/Users/ab7412/GPP_temp (Revisions 9625 and 9627).
description: Data files are in .csv, .txt, .nml, .sh, zip, and .nc format. 
 They can be opened with the following software: 
 .csv - MS Excel or any text editor .txt -
 any text editor .nml - any text editor,
 atom .nc - panoply .sh -
 bash .zip - win zip or 7zip
description: # Variable influence of photosynthetic thermal acclimation on future
 carbon uptake in Australian wooded ecosystems under climate change This
 dataset contains the files related to the experiment detailed in the
 manuscript published in Global Change Biology whereby we used the
 CABLE-POP landsurface model forced with HadGEM2-ES climate forcing data to
 examine the influence of photosynthetic thermal acclimation on GPP, NPP
 and live tree carbon storage in 17 wooded ecosystems in Australia.
 Included in this dataset are the parameter files (file extension .txt and
 .csv), setting files (file extension .nml) and runscripts (file extension
 .sh) needed to reproduce the experiment. In addition we provide the
 simulation output needed to examine our results. Full details of the
 methods used to produce these data are found within the manuscript methods
 section. ## Description of the Data and file structure #### Site level
 files: For each of the 17 study sites, there are 8 CABLE-POP simulation
 output files (.nc), 6 CABLE-POP settings files (.nml), and 2 parameter
 files (.csv and .txt). ##### Simulation output: Simulation output is found
 within the *site\_level\_simulations.zip* folder. Within the zip file,
 there are two folders - one for the *acclim\_on* simulations and one for
 the *acclim\_off* simulations under which there are folders for each site
 that contain four simulation output files named as follows: *
 plume\_out\_cable\_1850\_1900.nc * plume\_out\_cable\_1901\_2005.nc *
 plume\_out\_cable\_2006\_2099\_8p5\_varying.nc *
 plume\_out\_cable\_2006\_2099\_8p5\_static2005.nc These are
 self-documenting netcdf files. A list of all variables including their
 units can be found in the attached document
 (*CABLE-POP\_output\_variable\_list.docx*). ##### Settings: CABLE-POP
 namelist files are found within the *site\_nml\_files.zip* folder. Within
 this zip file there are 6 namelist files for each site for the varying
 CO<sub>2</sub> simulations with files named as follows: *
 cable\_1850-1900\_sitename\_acclim\_off.nml *
 cable\_1901\_2005\_sitename\_acclim\_off.nml *
 cable\_2006\_2099\_sitename\_acclim\_off.nml *
 cable\_1850-1900\_sitename\_acclim\_on.nml *
 cable\_1901\_2005\_sitename\_acclim\_on.nml *
 cable\_2006\_2099\_sitename\_acclim\_on.nml Namelist files are used by
 CABLE-POP to provide important information about the run settingsand are
 needed to reproduce simulations. The files can be opened in any text
 editor and are self-documented. ##### Parameters: Parameter files are
 found within the *site\_params.zip* folder. Within the zip file, there are
 two files for each site containing all parameters for the 17 plant
 functional types (pft) used by CABLE-POP. The relevant pft's for this
 study are "2 forest evergreen\_broadleaf"; "6 grass C3
 grassland" and "7 grass C4 grassland". Parameter names and
 units are listed within each of these file. These files are named and
 described as follows: * veg\_params\_sitename.txt [contains the vegetation
 parameters (\~80). Parameters are listed in repeating blocks with a
 heading for the pft that begins with a number and then the pft name.
 Parameter values are listed to the left and parameter names listed to the
 right - the parameter values and names are listed in corresponding order.]
 * pftlookup\_sitename.csv [contains additional parameters, sectioned by
 parameter type. In each section, parameter values are listed for each of
 the pft's in rows. The pft number is given in the leftmost column
 with the names detailed at the top of the file.] #### Additional files:
 Also included are 2 run scripts and 1 site list. ##### Run scripts: *
 run\_cable-pop.sh [runs cable-pop future simulations] *
 site\_wrapper\_future.bash [loops through sites to run run\_cable-pop.sh]
 ##### Site list: * OzFLUX\_sitelist\_GT\_All.txt [contains site name, eddy
 covariance data start year and end year, latitude, longitude, canopy
 height (m), eddy covariance tower height (m), reference height (m),
 vegetation description, NVIS5 group reference number, forest fraction,
 grass fraction and C4 grass fraction for each of the study sites] * NVIS5
 group reference number vegetation types are available from the Australian
 Government [NVIS v5.0 Major Vegetation
 Groups](https://www.dcceew.gov.au/sites/default/files/env/pages/ba1d4b30-d46f-42f7-bec2-fac391f26072/files/mvsg5-numeric-order.pdf). ## Sharing/access Information The data is not available elsewhere publicly. Site list, parameter files, and run\_cable\_pop.sh are derived from the CABLE-POP community.