Newtons per meter squared
Newtons per meter squared is the same as Pascals (Pa). It is one Newton of force exerted on an area of one square meter.
Millibar
A millibar (mb) is a metric unit of pressure equal to 100 pascals, or one hectopascal. Standard atmospheric pressure at sea level is 1,013.25 millibars, and weather forecasts quote air pressure in them.