meridional circulation

meridional circulation

[mə′rid·ē·ən·əl ‚sər·kyə′lā·shən]
(meteorology)
An atmospheric circulation in a vertical plane oriented along a meridian; it consists, therefore, of the vertical and the meridional (north or south) components of motion only.
(oceanography)
The exchange of water masses between northern and southern oceanic regions.
References in periodicals archive ?
Sometimes it is broken by development of meridional circulation, which causes large fluctuations and sharp changes in the course of meteorological elements [1, 2].
A statistically significant correlation was detected between the atmospheric circulation indices and storminess at Vilsandi, while the characteristics of zonal circulation have a positive correlation and those of meridional circulation are related to no or a negative correlation (Jaagus et al.
2004, Collapse and rapid resumption of Atlantic meridional circulation linked to deglacial climate changes: Nature, v.
This study highlights the importance of monitoring and improving measurement of the sun's meridional circulation.
Beyond the lower stratosphere, the signal acquires a zonal symmetric behavior with the largest negative anomalies in month 3, which is known to be related to the mean meridional circulation as will be explained next.
In answer to Jim Jones' question, it has been well established that the main driving force behind the meridional circulation of the North Atlantic conveyor belt, with ultimate worldwide impacts, is the descent of cold high-density saline water into the abyssal ocean at high northern latitudes.
The north-south extent of the features may reveal meridional circulation high in the Jovian stratosphere (higher than the visible cloud deck), facilitated by the injection of impact debris high above each impact site.
NAM and AO) can be physically explained and numerically accounted for from the isentropic meridional circulation variation (Yu et al.
This weakening of the vortex was a result of negative zonal-mean zonal wind tendencies driven by changes in the mean meridional circulation (MMC) and eddy momentum fluxes.
The stratospheric mean meridional circulation, commonly referred to as the Brewer-Dobson circulation (BDC), consists of upwelling in the tropics, poleward motion away from the tropics, and downwelling at mid- to high latitudes.