Column Ozone

Some articles on ozone, column ozone:

Ozone Depletion - Observations On Ozone Layer Depletion
... The most pronounced decrease in ozone has been in the lower stratosphere ... However, the ozone hole is most usually measured not in terms of ozone concentrations at these levels (which are typically of a few parts per million) but by reduction in the total column ozone, above a point on ... Marked decreases in column ozone in the Antarctic spring and early summer compared to the early 1970s and before have been observed using instruments such as the Total Ozone Mapping Spectrometer (TOMS ...

Famous quotes containing the word column:

    I stand on top
    of our back steps and breathe the rich air—
    a mother skunk with her column of kittens swills the garbage pail.
    She jabs her wedge-head in a cup
    of sour cream, drops her ostrich tail,
    and will not scare.
    Robert Lowell (1917–1977)