The Digital Earth Australia (DEA) program will deliver at least two new capabilities to Australian government agencies within the first year of operation, and three to six in subsequent years.
These projects will not only deliver valuable information to the project partners and other users, they will also advance the development of the DEA analysis platform, as well as enhance the DEA data collections, and improve the ways in which computing power, data and products are made available to users.
The current list of projects has been endorsed by the DEA Interdepartmental Committee (IDC). The IDC is composed of senior representatives from eight Commonwealth departments and helps ensure that the projects and products developed by the DEA program are of value to the Australian government and other users.
Sentinel-2 Surface Reflectance
The Sentinel-2 Surface Reflectance project is developing a surface reflectance product based on data from the Sentinel-2 satellites. The project will also set-up systems to produce and deliver the data in near real time (NRT) for Australian businesses and government users such as the Department of the Environment and Energy and the Murray-Darling Basin Authority.
The Sentinel-2 satellites take new images of Australia every five days at ten metre resolution. This improved resolution and observation frequency, together with near real time processing, means that the imagery could be used to develop new products for emergency management and environmental monitoring where timeliness is critical.
Further information and relevant documentation is provided below.
Seasonal Composites for Change Detection
The Seasonal Composites for Change Detection project is developing a method to compare historical seasonal composites (images containing months of data from previous seasons) with current images and composites, as a way to detect change in the landscape.
In the first phase of the project, DEA will provide the Clean Energy Regulator with a simple, automated method to use these seasonal comparisons to detect change over Emissions Reduction Fund project areas. This will reduce the need for time consuming manual process while also improving monitoring accuracy.
- Geomedian-based Change Detection Phase 1 - Development of a Basic Change Detection Capability [PDF 204KB]
The project will significantly improve ground water modelling through the use of satellite imagery to identify groundwater dependent ecosystems and levels of groundwater dependence.
In addition, the project will enable researchers to analyse the data to answer questions about these systems such as, 'Where were the green/wet features in the landscape during the most severe period of drought?'
NEII Viewer Extension
The National Environmental Information Infrastructure (NEII) Data Viewer is a web-based data visualisation tool for the NEII data collections. The Viewer allows users to access a range of air, vegetation, land, ocean and water data sets from Government providers such as the Department of the Environment and Energy, the Bureau of Meteorology and Geoscience Australia.
By connecting data sets such as satellite imagery and stream gauges it is possible to match times of peak river flow with relevant satellite data and visualise the effects of environmental flooding in the landscape, or conversely, the effects of periods of low flow on water-dependent ecosystems.
Together with datasets that provide information about the types and amounts of vegetation, these datasets and visualisation will improve understanding of the state of Australia's water resources and the effect and efficiency of water management practices.