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du
(redirected from Dobson unit)

    Also found in: Wikipedia 0.06 sec.
(tool, storage)du - ("disk usage") The Unix command to list the amount of disk space consumed by a directory and its subdirectories.

Unix manual page: du(1).
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In 1995, that instrument was no longer working, but balloon-borne instruments measured near-record values below 100 Dobson units in the atmosphere above the South Pole.
Ozone hole starts strong, fades quickly by Monastersky, Richard / Science News
In the last 2 weeks, the low recorded by researchers using the balloon instruments was 103 Dobson units of ozone -- about 10 percent more than last year at the same time, Oltmans says.
The seasonal ozone declines continue by Adler, Tina / Science News
6, the concentration of ozone over parts of Antarctica dropped to 110 Dobson units, beating a record of 121 Dobson units, set in 1987, says NASA's Arlin Krueger.
Antarctic ozone hole sinks to a record low by Monastersky, Richard / Science News
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