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.
Geographical distribution of median ice particle number concentration N (L−1) during 2008 and 2013 where the layer representative temperature, Tc, is between 218 and 228 K. The retrievals are using two formulations: SPARTICUS N(D)1 unmodified (left) and TC4 N(D)1=0 (right).
