We have saved CAM-chem simulation output that is intended to be used as boundary conditions for regional modeling. We used CAM-chem in the spectral element dynamical core, at approximately 1 degree global horizontal resolution with 32 vertical levels. Meteorology is driven by specified dynamics, by nudging with 50h relaxation (1%) to MERRA2 reanalysis. Data is saved as instantaneous fields every 6 hours. Chemistry is the MOZART-T1 mechanism, described in Emmons et al. (2019). You can find a description of all simulated species online. We use the MAM4-VBS scheme to model aerosols. Anthropogenic emissions are from CAMS-GLOB-ANTvXYZ. Biogenic emissions are from online MEGAN2.1. Fire emissions are from QFED CO2 x FINN emission ratios. SST in 2020 are repeated from 2019.
- Data Format: netCDF
- File size: X.X GB per day (?? x ??-hour instantaneous time slices per day)
- Data coverage: January 1, 2010 to December 30, 2020
- Output has been saved on a regular grid for ease of use with WRF-chem tools.
A list of saved output is here (add on another page).
Get the data
Currently, the data is only available via the NCAR glade HPC system at this location:
We are working on creating a NCAR Research Data Archive storage location.
To cite the data directly, please use:
Using the boundary conditions with WRF-Chem
The CAM-chem chemistry and aerosols for this run are identical to the WACCM forecasts. Mapping CAM-chem output to WRF-Chem chemistry schemes can be found in:
which is linked from this page:
CAM-chem simulations with CESM2.1 covering 2001 to 2020 can be found here: CESM2.1:CAM-chem as Boundary Conditions