atmospheric duct

(redirected from Evaporative duct)

atmospheric duct

[¦at·mə¦sfir·ik ′dəkt]
(geophysics)
A stratum of the troposphere within which the refractive index varies so as to confine within the limits of the stratum the propagation of an abnormally large proportion of any radiation of sufficiently high frequency, as in a mirage.
References in periodicals archive ?
Tenders are invited for Evaporative duct cooler (qty 2 nos)
Philbrick, "Lidar description of the evaporative duct in ocean environments," Proc.