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The Australian National University

Space gravity analysis

The second part of this project is to enhance the use of space gravity observations for Australian needs. Data from space gravity missions provides a unique approach to quantify changes in total water storage of our drainage basins and are one of the principal means of quantifying contribution to sea level rise from the melting of Antarctica and Greenland. Australia can benefit substantially by exploiting the data from the current space gravity missions, eg GRACE and GOCE (Gravity field and steady-state Ocean Circulation Explorer), and to have systems in place to assimilate observations for the future GRACE Follow-on mission (including the new laser ranging system).

The objectives of this stream will be to:

  • Deliver improved data analysis techniques optimised specifically for the Australian and Antarctic continents. Such analysis techniques will integrate regionally defined models for atmospheric and oceanic mass changes and consider the geometry and noise characteristics of hydrology in Australia drainage basins when calculating regional mass variations.
  • Generate and disseminate space gravity data products for changes in total water storage across the Australian continent. This will establish ownership and transparency of the process within Australia for converting raw observations of space gravity missions into usable geophysical parameters.

The space gravity analysis component provides the connection between the NASA GRACE Follow-on mission and Australian resource management needs.

Citation

Darbeheshti, N, Zhou, L, Tregoning, P et al 2013, The ANU GRACE visualisation web portal, Computers and Geosciences, vol. 52, pp. 227-233.

Please reference this article if you use results generated on this website.

Updated:  8 January 2013/Responsible Officer:  Project Director /Page Contact:  Web Admin