Dobson unit


Also found in: Dictionary, Acronyms, Wikipedia.
Related to Dobson unit: ozone hole, ozone layer

Dobson unit

[′däb·sən ‚yü·nət]
(meteorology)
The unit of measure for atmospheric ozone; one Dobson unit is equal to 2.7 × 1016 ozone molecules per square centimeter, which would be equivalent to a layer of ozone 0.001 centimeter thick, at 1 atmosphere and 0°C.
References in periodicals archive ?
He and his colleagues recorded a low of 100 Dobson units of ozone on Sept.
The previous record low, set last year, was 105 Dobson units.
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.
Balloon-borne sensors measured ozone values as low as 195 Dobson units during the second week of September, 1 week earlier than usual, says Samuel J.
Satellite measurements show that the ozone concentration in the Antarctic stratosphere -- 12 to 50 kilometers up -- reached 125 Dobson units on Oct.
TOMS data show that the minimum ozone level over Antarctica plummeted from 200 Dobson units in mid-August to 133 Dobson units in mid-September.