- progress on global DEM data fusion methods and outcomes

- progress on creation of bathymetry of the Earth's continental shelves and data fusion with coastal zone co-ordinate systems, topography and shorelines from spaceborne EO data

- temporal aspects of DEMs including per gridpoint time-tagging, change assessment (e.g. ice-sheets, open-cast mining, landslides, etc..)

- methods for bare earth retrieval from Earth Observation-derived Global DEMs and subsequent assessment of global biomass (in association with the IC II/IV on Global land cover)

- open source software and database for evaluation/validation of global DEMs

- methods for interoperability through OGC-compliant protocols