iTRACE-Holocene Dataset: A Holocene Transient Simulation Using the Isotope-Enabled CESM model (iCESM1.3)

iTRACE Holocene (11~0ka BP) all-forcing simulation dataset: commonly used, post-processed decadal and seasonal mean data.

The all-forcing simulations (ORB+GHG+ICE+WMT) were performed using the isotope-enabled CESM model (iCESM1.3)

For detailed information on the iTRACE Holocene simulation, please refer to:

"Climate Simulations and Ice Core Data Highlight the Holocene Conundrum over Tropical Mountains" published by Communications Earth & Environment. Please cite this paper if you use the iTRACE-Holocene data in your publication.

The paper is available at: https://www.nature.com/articles/s43247-025-02188-2

*The dataset includes (Please check "README" for more details on each variable):

(1) atm-surface: Post-processed decadal mean (seasonal and annual) atmospheric surface data

(2) ocn-ice-surface: Post-processed decadal mean (seasonal and annual) ocean surface and sea ice data

(3) atm-pressure-level: Post-processed decadal mean (seasonal and annual) atmospheric data at pressure levels

Additional atm-surface data regarding surface radiation and heat flux can be found at https://zenodo.org/records/14523124

Notation: ANN (annual mean); MAM (average of Mar-April-May); JJA (average of June-July-Aug); 

SON (average of Sept-Oct-Nov); DJF (average of Dec-Jan-Feb) 

Check meta information of each NetCDF data: 

ncdump -h {filename}

Timestamp of the iTRACE Holocene data (years before present: relative to 1850) can be found in the file: time_values1.txt

Timestamp of the iTRACE Holocene data (Ka or thousand years before present: relative to 1850) can be found in the file: time_values2.txt

We thank coauthors Lingfeng Wan and Jiuyou Lu for conducting the Holocene iTRACE simulations.

Also, the last deglaciation (20~11ka BP) iTRACE simulation output data can be found at NCAR Climate Data Gateway:

https://rda.ucar.edu/datasets/d651022/

or through the NCAR Supercomputer directory: /glade/campaign/cesm/collections/iTRACE

Contact information:

Any questions regarding iTRACE simulation data, please contact Yuntao Bao through: [e-mail]