¥DP-temperature
to which air must be cooled at constant
pressure to become saturated (at which point dew
forms).
¥Higher DP Þ Higher water vapor content.
¥DP is a good indicator of the actual
water vapor content
since air pressures vary very little along the
earthÕs surface.
¥DP is plotted on
surface weather maps.
¥DP depression
(Temp-DP) is plotted aloft.