TCO (Total Column Ozone): a measurement of the total
amount of atmospheric ozone in a given column. Usually, TCO is
measured in Dobson Units (DU). For more details on the distribution of
ozone in the atmosphere, click here.
Dobson Unit (DU): 1 Dobson Unit = .01mm height of ozone molecules,
compressed down through the column.
Click here to see more about the definition of
TCO Data: TCO data
from Total Ozone Mapping Spectrometer (TOMS). The data are, using NASA
terminology, level-3 data, which are released at 1°
lat × 1.25° lon resolution. Some of the 1° × 1.25°
cells do not contain any data.