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:
“On a starred night Prince Lucifer uprose,
Tired of his dark dominion, swung the fiend
Above the rolling ball in cloud part screened,”
—George Meredith (1828–1909)
“And all the popular statesmen say
That purity built up the State
And after kept it from decay;
Admonish us to cling to that
And let all base ambition be,
For intellect would make us proud....”
—William Butler Yeats (1865–1939)