Alan in Antarctica

Return to main page

Linnea Avallone, and her students Sean Davis and Lars Kalnajs, are measuring tropospheric ozone in a very clean site, near the Pegasus runway which will not be used for several months, to measure the interaction of the surface with atmospheric chemistry.  They are measuring ozone, NOx, and vertical fluxes of ozone, as well as the meteorology.  On Sept. 13, 2004, I accompanied them on a trip out to their hut.

To see their scientific results, visit Linnea's web page at

  As we approach their hut, following the pink flags.

  The ride in a Mattrack is very bumpy.

  Lars and Sean trying to fix the anemometer.  The tank on the rear is for fuel for the generator.

  Linnea supervising Lars and Sean trying to fix the anemometer.

  With the sun dimly visible to the North.  The pole on the right is for the ozone inlet.

  The ozone inlet.

  Ozone and weather instruments inside the hut.

  The mast, to which the sonic anemometer and another ozone sensor will be mounted, for flux measurements.

  With the anemometer installed.  As you can tell, it is an excellent isolated location for measurements.

  A faint halo was visible around the sun.

  It was not that cold, but my breath was condensing.

  Approaching McMurdo on the way back.

  McMurdo.  The building on the far left is where we launch our balloons.

Return to main page