obscuration


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obscuration

[‚äb·skyu̇′rā·shən]
(meteorology)
In United States weather observing practice, the designation for the sky cover when the sky is completely hidden by surface-based obscuring phenomena, such as fog. Also known as obscured sky cover.

obscuration

A condition in which the sky, or the dividing line between a cloud and the clear air below, is completely hidden by surface-based obscuring phenomena such as fog, mist, or smoke. Also known as obscured sky cover.
References in periodicals archive ?
And it has been nearly a decade since a CBRN officer last had an opportunity to participate in the planning of a large-scale, complex, combined arms breaching rehearsal and to serve as the smoke commander for the obstacle breach, incorporating obscuration and demonstrating its value to other branches.
We examine in this paper the use of STB silica, fused silica, and PMMA beads of known size, suspended in a fluid of known refractive index, as a means of characterizing the response of a light obscuration instrument and a flow imaging instrument to particles of low optical contrast.
Spurious colours also cannot account for the obscuration of surface detail reported only at these two small, highly localised, areas.
The effects of this flash will cause temporary visual obscuration, limiting the targeted individual(s) ability to see, take aim at friendly forces, and/or maneuver into restricted areas.
There was complete opacification of the left maxillary sinus with obscuration of the osteomeatal complex.
The peace negotiations that we were so regularly accused of undermining have been proven to be nothing more than obscuration.
Stars form deep within molecular clouds and the earliest stages of their development cannot be seen in visible-light telescopes because of obscuration by dust.
Reduced Visibility: Based on research at the Fire Research Station (FRI) in Japan (Jin 1975), the relation between visibility and smoke obscuration is
The eclipse will visible in Pakistan with a 13 percent obscuration of the solar disk, private news channel reported.
One small sampling of his topics turns up borderline personality disorders and hallucinations, dimensions of visual imagery, hallucination in braille, inattentional deafness, obscuration, German judge Daniel Paul Schreber (1842-1911), and teleological hallucination.
12) In the reports two formulae describe the first visibility of the moon, following its obscuration at the end of the previous month:
Using light obscuration technology, the new particle counter produces accurate and reliable test results in just two minutes.