Information Services

FY 1999 Statistics

In FY 1999, CDIAC received an all-time high of 92,000 requests for data and information products, representing a 26% increase in requests compared with FY 1998.

Traditional requests (i.e., mail, fax, telephone) and direct accesses continued to decline in FY 1999, accounting for only 3,400 of the total number of requests.

In FY 1999, CDIAC distributed data and information products on 135 custom-made CD-ROMs, 69 floppy diskettes, and 29 8mm tapes. In FY 1995, CDIAC distributed 248 of the two-volume CDIAC CD-ROMs, 832 floppy diskettes, 39 8mm tapes, 31 9-track magnetic tapes, and five 150-MB QIC tapes.

Requests to CDIAC Exceed 92,000

FY 1999 Web Statistics

CDIAC users made 137,000 visits to CDIAC's Web site, viewing more than 760,000 web pages (an average of 2,088 pages were viewed per day, and the site was visited an average of 376 times per day).

Visits to CDIAC's Web site were made from 90 domains, including 81 foreign countries. In comparison, systems from 33 countries visited CDIAC's Web site in FY 1995.

Top keywords used to locate CDIAC data and information products via online search engines (e.g., AltaVista, Yahoo, Excite, etc.) were "carbon dioxide, carbon, cdiac, carbon dioxide emissions, ameriflux, CO₂, and average temperature."

Views/Visits by Month

Web Visits by User Type

Foreign Countries Visiting CDIAC's Web Site