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The 2002 Antarctic Ozone HoleSince 1979, the ozone hole has grown from near zero size to over 24 Million km2. This area is most strongly controlled by levels of inorganic chlorine and bromine oncentrations. In addition, dynamical variations modulate the size of the ozone hole by either cooling or warming the polar vortex collar region. We will review the size observations, the size trends, and the interannual variability of the size. Using a simple trajectory model, we will demonstrate the sensitivity of the ozone hole to dynamical forcing, and we will use these observations to discuss the size of the ozone hole during the 2002 Austral spring. We will further show how the Cly decreases in the stratosphere will cause the ozone hole to decrease by 1-1.5% per year. We will also show results from a 3-D chemical transport model (CTM) that has been continuously run since 1999. These CTM results directly show how strong dynamics acts to reduce the size of the ozone hole.
Document ID
20040000090
Acquisition Source
Headquarters
Document Type
Preprint (Draft being sent to journal)
Authors
Newman, P. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Nash, E. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Douglass, A. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kawa, S. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Environment Pollution
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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