Adrian Colton at the Mauna Loa Observatory shows how early flask samples were filled at the site

Adrian Colton at the Mauna Loa Observatory shows how early flask samples were filled at the site. Air collected year-round at MLO and eight other remote sites world-wide has been analyzed for the industrial solvent methyl chloroform. Variability in the decay of this chemical helps scientists understand the cleansing power of the global atmosphere and its sensitivity to perturbations.

Photo Location: Hawaii, Mauna Loa
Photo Date: 2010