GFDL - Geophysical Fluid Dynamics Laboratory

Research Highlights October 2010 : Austin and Wilson

Study by John Austin and R John Wilson on the Sensitivity of polar ozone to sea surface temperatures and halogen amounts.

The results of the simulations of Austin and Wilson (2010) suggest the
importance of including a coupled ocean on stratospheric processes as
well as realistic bromine amounts, including the very short lived
species. The figure shows the calculated area of the ozone hole (colored
lines and triangles), together with observations (black triangles). With
SSTs from the CM2 coupled ocean-atmosphere experiment, the simulated
ozone hole (blue) tends to be slightly larger (by about 6%) than
simulated with observed SSTs used as forcing (red curve and points). For
the low Bromine simulation (green), which corresponds approximately to
just the long lived bromine species, the ozone hole was smaller by about
10%. Recent model developments have eliminated the small but significant
bias between observations and model results shown in the figure below.

Reference: 

Austin, John, and R John Wilson, 2010, Sensitivity of polar ozone to sea surface temperatures and halogen amounts. Journal of Geophysical Research, 115, D18303, doi:10.1029/2009JD013292.