CIRRUSWeb Login 

Home
Up
What's New
Climate Information
Services
Education
Special Projects
About Us
Search

 

SE Regional Climate Center
2221 Devine St., Suite 222
Columbia, SC 29205
Toll Free:
1-866-845-1553
Phone:
803-734-9560
          
803-734-9559
Fax:
803-734-9573
sercc@dnr.state.sc.us

 

 

Isopleths

Isopleth is a Greek word meaning equal value.  It means to connect equal values of a meteolological variable with a line.  Often isotherms (lines connecting equal temperature) and isobars (lines of equal pressure) are drawn to help demonstrate weather patterns over space.

Tips to Keep in Mind When Drawing Isopleths

*    Draw isopleths all the way to the boundary of the plotted data or until it closes in on itself creating a loop.  Do not draw lines for areas you do not have data for.

*    Isoplethss never fork, touch or cross one another.

*    Adjacent isopleths will tend to look alike.  They generally run paralell to one another, as changes are usually gradual.

*    Only draw isopleths that fall within the range of pressures reported on a map. If 1032 is the highest pressure reported, then a 1032 mb isobar should not be drawn.

*    Always lablel your isopleths!

Click here to go back to the Spring 2000 Southern AER!

 

 

sercc@dnr.state.sc.us