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.
3D map of the instantaneous concentration (ppm) in Experiment 2. The black square indicates the gas source location (x,y,z) = (14.0, 5.2, 2.7) m, the black arrow the wind direction (positive x-axis) and the letter ‘S’ the starting point of the drone (x,y,z) = (13.5, 5.2, 0.0) m.
