Dear colleagues - Some of you may be interested in the recent appearance of new
releases of GMBAL, a compilation of global data on the annual and multi-annual
mass balance of glaciers, obtained by direct (glaciological) and geodetic methods;
and GMBANAL, a continuation of GMBAL in which regional and global estimates are
provided by means of arithmetic averaging of the data and also by spatial
interpolation to unmeasured glaciers.
These new releases, each labelled as R1501, are now downloadable from
http://www.trentu.ca/geography/glaciology (click Global Glaciology, then Mass
Balance of Small Glaciers for GMBAL or Global Analysis of Mass Balance for
GMBANAL). They supersede the previous release R1301 of two years ago and feature
continued steady growth of in-situ glaciological measurements and continued rapid
growth of geodetic measurements, especially regional-scale geodetic measurements.
As before, most of the glaciological measurements are drawn from the Fluctuations
of Glaciers database of the World Glacier Monitoring Service, but GMBAL includes
some that are not (yet) in that database. However GMBAL is currently by far the
most complete source of geodetic measurements. GMBANAL relies on version 5.0 of
the Randolph Glacier Inventory for its description of global glacier geography.