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.
HYSPLIT back trajectories estimated for the previous 24 h, ending in Pasadena, CA (red circle, at the CIT measurement site), at 14:00 LT. Results are shown for January, March, May, July, September, and November 2015 (from top left to bottom right) using NAM12 hourly winds.
