The ASTER Global Digital Elevation Model (GDEM) Version 3 (ASTGTM) provides a global digital elevation model (DEM) of land areas on Earth at a spatial resolution of 1 arc second (approximately 30 meter horizontal posting at the equator).
The development of the ASTER GDEM data products is a collaborative effort between National Aeronautics and Space Administration (NASA) and Japan’s Ministry of Economy, Trade, and Industry (METI). The ASTER GDEM data products are created by the Sensor Information Laboratory Corporation (SILC) in Tokyo.
This first state of the environment report for the Pacific region uses regional environment indicators to assess the status, trends, and data quality and availability for the endorsed Pacific environmental priorities. This report also includes an update of the State of Conservation in Oceania report produced in 2013, which was endorsed and published in 2017.