Examine the rates of pressure decrease upon the series of isobaric charts.
Study the isobaric chart of each day of the series by itself at first.
Lines of pressure-decrease should be drawn on all isobaric charts studied in the class, as they are highly instructive.
Examine the series of isobaric charts to see how the lines of pressure decrease run.
Draw lines of pressure decrease for the six isobaric charts, as you have already done on the isothermal charts.
It is to be noted that isobaric lines are the intersections of inclined isobaric surfaces with the surface of the earth.
isobaric i·so·bar·ic (ī'sə-bär'ĭk, -bār'-)
Having equal weights or pressures.
Of or relating to solutions having the same density as the diluent or medium.