CAM-chem Download

CAM-chem 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 CAM-chem and requests for additional dates can be addressed to Rebecca Buchholz (buchholz at ucar . edu).

Direct data download is also avalailable from: https://www.acom.ucar.edu/cam-chem/DATA/

The 'date' and 'datesec' variables contain the date and time of the CAM-chem 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.

CAM-chem results are available for January 1, 2010 to December 31, 2018. For other dates, please contact Rebecca Buchholz (buchholz at ucar . edu).

Please enter your contact information in the space below:

  • Your name:
  • Affiliation:
  • Intended usage (optional):
  • E-mail:
  • Phone:

Enter the lat-lon and date bounds of the region to extract:

To specify a box that crosses the Greenwich Meridian, enter longitude values like: 340 West and 20 East (from 20W to 20E).
North latitude (-90.0 to 90.0):
West longitude (0.0 to 360.0):
East longitude (0.0 to 360.0):
South latitude (-90.0 to 90.0):

Starting date: Ending date:

Submit your data request here: