CDIAC provides global change data to users completely FREE of charge. If electronic transfer does not meet your needs, please use one of the methods below to contact CDIAC.

• Complete an on-line order form
• E-mail your request to CDIAC

• or contact CDIAC by telephone or fax at:
  CDIAC
  
  Oak Ridge National Laboratory

  (865) 574-0390
  
  (865) 574-2232 (FAX)
  
  cdiac@ornl.gov
  
  
  Data and Information Requests: (865) 574-3645