Southeastern South America Soil Moisture Alteration Experiment Using CESM2



This dataset contains model output from the Community Earth System Model, Version 2 (CESM2; Danabasoglu et al. 2020). These data were used for analysis in Impacts of Large-Scale Soil Moisture Anomalies in Southeastern South America, published in the Journal of Hydrometeorology (DOI: 10.1175/JHM-D-20-0116.1). See this publication for details of the model simulations that created these data.

Four NetCDF (.nc) files are included in this dataset. Two files correspond to the control simulation (FHIST_SP_control) and two files correspond to a simulation with a dry soil moisture anomaly imposed in southeastern South America (FHIST_SP_dry; see the publication mentioned in the preceding paragraph for details on the spatial extent of the imposed anomaly). For each simulation, one file corresponds to output from the atmospheric model (file names with "cam") of CESM2 and the other to the land model (file names with "clm2"). These files are raw CESM output concatenated into a single file for each simulation.

All files include data from 1979-01-02 to 2003-12-31 at a daily resolution. The spatial resolution of all files is about 1 degree longitude x 1 degree latitude. Variables included in these files are listed or linked below.

Variables in atmosphere model output:
Vertical velocity (omega)
Convective precipitation
Large-scale precipitation
Surface pressure
Specific humidity
Temperature (atmospheric profile)
Reference temperature (temp. at reference height, 2 meters in this case)
Zonal wind
Meridional wind
Geopotential height

Variables in land model output:
Note that not all of the variables listed at the above link are included in the land model output files in this dataset.

This material is based upon work supported by the National Science Foundation under Grant No. 1454089.

We acknowledge high-performance computing support from Cheyenne (doi:10.5065/D6RX99HX) provided by NCAR's Computational and Information Systems Laboratory, sponsored by the National Science Foundation. The CESM project is supported primarily by the National Science Foundation. We thank all the scientists, software engineers, and administrators who contributed to the development of CESM2.

Danabasoglu, G., and Coauthors, 2020: The Community Earth System Model Version 2 (CESM2). Journal of Advances in Modeling Earth Systems, 12, e2019MS001916,
Date made availableFeb 24 2021
PublisherUniversity of Illinois at Urbana-Champaign


  • hydroclimatology
  • soil moisture
  • Climate modeling
  • land-atmosphere interactions
  • atmospheric science
  • hydrometeorology

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