circulation index

circulation index

[‚sər·kyə·′lā·shən ′in‚deks]
(meteorology)
A measure of the magnitude of one of several aspects of large-scale atmospheric circulation patterns; indices most frequently measured represent the strength of the zonal (east-west) or meridional (north-south) components of the wind, at the surface or at upper levels, usually averaged spatially and often averaged in time.
References in periodicals archive ?
The periodical circulation index decreased, after showing no change in September.
In 1997, the Index of American Public Library Circulation was 116, a 5% increase from the 1996 circulation index of 110.
The Loyalty report indicates how many times the average client returns to your Web site; -- The Circulation index demonstrates how often a site is visited.