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7. Authors Biography 
Joachim Schwabe is a scientific staff member of the unit “Integrated Spatial Referencing” at 
the German Federal Agency for Cartography and Geodesy (BKG). He graduated as a geodesist 
from the Technische Universität Dresden (TUD) in 2008 and finalized his PhD thesis on regional 
geoid modeling in the polar regions in 2015. An opportunity to assist the computations for the qua- 
sigeoid model GCG2016 led him to the BKG, where he is now contact person for the GCG mod