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1917 Science 360/2 Those who persist in advocating the retention of millibar are evidently not aware that V. Bjerknes expressly states that in his system the C.G.S. unit will be the microbar.

1935 Proc. Royal Soc. A. 151 108 The amplitude c₂ is expressed in this paper in microbars; the microbar is one dyne per sq cm, or very nearly one-millionth of the normal atmospheric pressure.

1971 Nature 1 Jan. 15/3 The figures..indicate that a pressure wave moving at 330 m s⁻¹ generates a displacement of the Earth's surface of 10 to 15 nanometres per microbar with periods between 20 and 100 s.

1989 Science 246 1459 The temperature of Triton's upper atmosphere is 95 ± 96 kelvins, and the surface pressure is roughly 14 microbars.