🚀 go-pugleaf

          Total column ozone is measured at South Pole, Antarctica
          using a Dobson spectrophotometer.  The Dobson operates
          during the austral summer when the solar elevation is high
          enough and also is used for a few measurements during the
          winter using the sun as a source.  Unfortunately, it is not
          very useful during the time when the ozone hole is forming.
          The Dobson is owned and operated by NOAA"s Climate
          Monitoring and Diagnostic Laboritory (CMDL).

          During certain times of the year, including early spring,
          NOAA's Aeronomy Lab (Susan Solomon, PI) operates a
          ultraviolet/visible spectrometer at McMurdo which is capable
          of measuring total column ozone even though that is not its
          principle usage (OClO, NO, BrO,..).

          In principle I believe that one could retrieve total column
          ozone from the uv data being collected by the NSF owned
          spectrometer network at South Pole, McMurdo and Palmer,
          Antarctica; Ushuaia, Argentina; San Diego, CA and Pt.
          Barrow, AK.  I have the feeling that no one is actually
          analyzing the data for that particular parameter.

          Electro-chemical cell (ECC) balloon borne ozonesondes are
          flown from South Pole year-round by NOAA/CMDL, from McMurdo
          during the ozone hole season by Terry Deshler of the
          University of Wyoming, and during some years from Palmer by
          Arnold Torres of NASA's Wallops Flight Facility.  These
          instruments measure the verticle profile of the ozone.

          Robert deZafra of SUNY Stony Brook sometimes operates a
          microwave spectrometer from McMurdo which gives an
          indication of the ozone profile.  It is planned to operate
          this instrument from South Pole throughout  1993.  As is th
          case with the uv/vis spectrometer, this instrument is
          operated for other reasons (ClO, N2O,....).

          There are Total Ozone Mapping Spectrometers (TOMS)
          instruments operated on several satellites by NASA Goddard
          Space Flight Center (Arlin Krueger, PI).  These instruments
          produce a map of total column ozone each day for the entire
          sunlit portion of the Earth.  The recently launched URAS
          provides more detailed information including measurement of
          reactants like ClO.

          John Lynch