constant-pressure chart

The synoptic chart for any constant-pressure surface, usually containing plotted data and analyses of the distribution of height of the surface, wind temperature, humidity, and so on. Also known as isobaric chart; isobaric contour chart.

Related terms:

• constant-height chart
• isentropic chart
• pressure-change chart
• constant-level chart
• constant-pressure surface
• freezing-level chart
• thickness chart
• pressure pattern
• sea-level pressure chart
• surface chart