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.
(A) Mean top-down anthropogenic NOx emissions from inverse analysis in the period 2005–2015. (B and C) Difference of top-down anthropogenic NOx emissions from 2005–2006 to 2008–2009, and from 2011–2012 to 2014–2015. (D–F) same as A–C, but for top-down anthropogenic CO emissions. The unit is 1010 mole/cm2/s.
