The cloud base (or the base of the cloud) is the lowest altitude of the visible portion of the cloud. It is traditionally expressed either in m or feet above mean sea level (or planetary surface), or as the corresponding pressure level in hectopascal (hPa, equivalent to millibar).
Read more about Cloud Base: Measurement, Weather and Climate Relevance
Famous quotes containing the words cloud and/or base:
“That which is given to see
At any moment is the residue, shadowed
In gold or emerging into the clear bluish haze
Of uncertainty. We come back to ourselves
Through the rubbish of cloud and tree-spattered pavement.
These days stand like vapor under the trees.”
—John Ashbery (b. 1927)
“Then must you speak
Of one the lov’d not wisely but too well;
Of one not easily jealous, but, being wrought,
Perplex’d in the extreme; of one whose hand,
Like the base Indian, threw a pearl away
Richer than all his tribe;”
—William Shakespeare (1564–1616)