Greenland elevation changes plotted against NAO index

Spatially averaged changes in winter Greenland Ice Sheet elevation (red) and winter North Atlantic Oscillation (NAO) (blue) index, lagged one month 1992-2003. Winter elevation change during e.g, 1994/1995 was determined by subtracting autumn 1994 from winter 1994/1995.
O. M. Johannessen, K. S. Khvorostovsky, M. W. Miles and L. P. Bobylev (2005): Recent ice sheet growth in the interior of Greenland. Science (In Press, and October 20, 2005 issue of Science Express).