WACCM results for a subset of the globe and a range of dates can be downloaded from this page. Output is provided every 6 hours. Each request is provided as a single netcdf file. We strongly recommend that you download a single day for your region to check the file size and then request a range of dates that will result in a manageable file size. Questions about WACCM and requests for additional dates can be addressed to Dan Marsh (marsh at ucar . edu).
The WACCM forecasts are driven by meteorological fields from the NASA GMAO GEOS-5 model. This simulation uses anthropogenic emissions from CEDS provided for CMIP6, with emissions for 2014 used for this year. Open fire emissions are from FINN-v1 (Wiedinmyer et al., Geosci. Model Devel., 2011). The results are at 0.9x1.25 degrees with 88 levels. Each file (global for 1 day) is 8 GB: https://www.acom.ucar.edu/waccm/DATA
The 'date' and 'datesec' variables contain the date and time of the WACCM output. To verify the date of the downloaded files, please use 'ncdump -v date'. The program ncview does not properly interpret the 'time' variable and calculates an erroneous date.
WACCM results are available from one year ago until 10 days from now.
CO01: global biomass burning
CO02: North America anthropogenic
CO04: Northern Africa
CO05: Western Asia
CO06: East Asia
CO07: South America
CO08: Southern Africa