zonal wind

zonal wind

[′zōn·əl ′wind]
(meteorology)
The wind, or wind component, along the local parallel of latitude, as distinguished from the meridional wind.

zonal wind

zonal windclick for a larger image
Upper zonal flow over the North Atlantic with perturbation.
The wind, or wind component, along the local parallel of latitude, as distinguished from the meridional wind. The zonal wind is a large-scale westerly wind that is neither cyclonic nor anticyclonic.
References in periodicals archive ?
4) Sea Surface Temperature (March to May + tendency between March to May & December to February), North Atlantic Mean Sea Level Pressure (May) and North-Central Pacific 850 zonal wind gradient (May).
4) Sea Surface Temperature (March to May+tendency between March to May and December to February), North Atlantic Mean Sea Level Pressure (May) and North-Central Pacific 850 zonal wind gradient (May), he said.
For example, an abrupt increase in the upper-air (500 and 850 hPa levels) zonal wind component in January and February took place around 1987 (Keevallik, 2011).
Operational forecasts for the onset of the monsoon are issued on the basis of six indicators -- minimum temperature over northwest India, pre- monsoon rainfall peak over the southern peninsula, outgoing long- wave radiation over South China Sea, lower tropospheric zonal wind over southeast Indian Ocean, upper tropospheric zonal wind over east equatorial Indian Ocean and outgoing long- wave radiation over southwest Pacific region.
In the middle atmosphere (10-100km altitude), consisting of the stratosphere (10-50 km), the mesosphere (50-90 km) and a part of the lower thermosphere (90-150 km), the zonal wind velocity can reach magnitudes as large as 80m/sin mid-latitudes at an altitude of about 50 km.
These include several of long-term significance, not only on the great northern upheaval, but also on the accelerating circulation of the Great Red Spot, the long-term tracking of anticyclonic ovals, and zonal wind profiles obtained from amateur images by Grischa Hahn in the JUPOS project.
There is a strong relationship between vertical propagation of Rossby waves and zonal wind regimes.
Surface recordings at Pakri and Sorve show that in some cases the zonal wind component was even negative, i.
Detection of a 40- to 50 day oscillation in the zonal wind in the tropical pacific.
Grain-size data suggest that an increase in zonal wind intensity of the Southern Hemisphere trade winds occurred in the early part of the late Miocene, the only significant change found in those Neogene records.
Change in zonal-mean zonal wind (blue) and sinuosity (waviness in 500-hPa isohypses; red) over North America during (left) Aug and (right) Jan 2081-2100 minus 1981-2000 [National Center for Atmospheric Research (NCAR) Community Earth System Model (CESM) representative concentration pathway 8.