synoptic chart

synoptic chart

[sə′näp·tik ′chärt]
(meteorology)
Any chart or map on which data and analyses are presented that describe the state of the atmosphere over a large area at a given moment in time.

synoptic chart

A standardized map of the weather that shows the distribution of meteorological conditions over any area at a given time. A synoptic chart shows isobars, fronts, and weather symbols. These normally are drawn at three hourly intervals, usually at 000, 0300, 0600, 0900, 1200, 1500, 1800, and 2100 h GMT (Greenwich mean time). Also called a surface analysis chart.
References in periodicals archive ?
A marked feature on the synoptic chart earlier this week was the rather slow progression of the South Atlantic High.
Undercutting and overriding of airmasses and their intertwining flows will ensure vortex development identifiable for each successive 3-hourly synoptic chart.
Quite naturally the full range of detail is expansive: and that is just the one synoptic chart.
The synoptic chart shows that an intense anticyclone has been present over the mid-Atlantic for the past week.
He also pioneered techniques for forecasting weather such as synoptic charts, where weather observations taken at the same time were drawn on a map to aid forecasting - a technique still used today.
We obtained the synoptic charts for 00 and 12 Greenwich mean time covering the period 1983-1995 on a daily basis from the archives of the European Meteorological Bulletin.
The text is enhanced by three important factors: the generous citation of sources, the use of synoptic charts, and clear outlines of the various rites.
The most noticeable feature of the week's progression of synoptic charts is that the core of the high pressure cells in the so-called subtropical high pressure belt, has shifted south by about one thousand kilometres.
This week's synoptic charts were dominated by an anti-cyclonic circulation which persisted with its core over the Karas region for most of the week.
The main feature on all synoptic charts for southern Africa this week was two low pressure systems, one on each side of the continent.
Four different synoptic charts provide differing projections of this complexity, but each with a level of influence upon our weather.
The most noticeable feature of current synoptic charts is that they consistently diverge from normal, expected patterns.