Dobson unit
(缩略词： DU)
noun
- a unit of measurement for the total amount of ozone in the atmosphere above a point on the earth's surface, one Dobson unit being equivalent to a layer of pure ozone 0.01 mm thick at standard temperature and pressure（测量地球表面大气臭氧量的）多布森单位。
词源
1980s: from the name of G. M. B. Dobson （1889-1976）， British meteorologist.