Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison of the ODIAC and Vulcan total FFCO2 emissions as mapped distributions (left) and frequency histograms (right) for contiguous United States only: (a, b) ODIAC total FFCO2 emissions; (c, d) Vulcan total FFCO2 emissions; (e, f) GRD values ({ODIAC‐Vulcan}/Vulcan) (values larger than 99% and smaller than −99% were excluded from the GRD frequency distribution).
