Australian Water Availability Project

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AWAP Data Advisory - Important bias correction to BoM solar radiation affects CSIRO AWAP model results

We are suspending distribution of AWAP Historical Run 26h data (1900-2011) following advice from the Bureau of Meteorology that a bias recorrection of satellite data was required, affecting daily and monthly solar radiation data from November 2010. Near-real-time operational data from November 2010 to December 2013 are also affected. Normal service will resume as quickly as possible and will include a new recalculated and extended historical dataset for 1900 to February 2014.

Imagery at this website will remain viewable until new data and imagery are announced. The expected timeframe for this is two weeks. For further information, please refer to:

CSIRO AWAP advice (123 KB)
Bureau of Meteorology advice (2.2 MB)

The CSIRO AWAP Team
21 March, 2014

The aim of the Australian Water Availability Project (AWAP) is to monitor the state and trend of the terrestrial water balance of the Australian continent, using model-data fusion methods to combine both measurements and modelling. The project determines the past history and present state of soil moisture and all water fluxes contributing to changes in soil moisture (rainfall, transpiration, soil evaporation, surface runoff and deep drainage), across the entire Australian continent at a spatial resolution of 5 km. Using the same basic framework, the project provides soil moistures and water fluxes over the Australian continent in three forms: (1) weekly/monthly near-real-time reporting, (2) monthly/annual historical time series from 1900, and (3) monthly climatologies (on request).

The long-term intention is to contribute to integrated monitoring and understanding of the dynamics of Australian landscape systems, especially responses to climate variability and change, and thus to assist adaptive, system-wide management through feedback via measurement and monitoring.

Funding for CSIRO AWAP science projects and the maintenance and development of CSIRO AWAP data is provided by the South Eastern Australian Climate Initiative (SEACI), a three year, $7.5 million research program investigating the causes and impacts of climate change and climate variability across south eastern Australia. SEACI is a collaboration between the Murray-Darling Basin Authority, Victorian Department of Sustainability and Environment, Department of Climate Change, Managing Climate Variability Program, CSIRO, and the Bureau of Meteorology.

Water Balance Maps:

Operational maps are more timely but are modelled using next-day meteorology surfaces, constructed using fewer stations, and before the completion of the BoM quality control cycle. Early operational results are occasionally refreshed using historical data.

Historical maps are modelled using the best quality-controlled meteorology surfaces available at the time, including the BoM AWAP daily recalibrated rainfall product, supplemented in data sparse areas by disaggregated monthly data.

  • Data Re-Enabled Notice (21 July 2012): The offset error in the monthly solar radiation surface for November 2009 (explained here) has been fixed and the historical series have been reprocessed. These new data are linked to from the following two links and, for collaborators, are available by FTP.
  • Historical Monthly 1900-2011 (last updated: 21 July 2012)
  • Historical Annual 1900-2011 (last updated: 21 July 2012)

Additional Information:

  • Public access to the data: Currently AWAP model results (excluding BoM meteorology) are a research level product and are available for collaborative use with CSIRO AWAP team members. Where AWAP model data are to be used for significant scientific outputs (such as publications) we will wish to discuss co-authorship. Please contact Peter Briggs.

Partner Websites:

Contacts:

Michael Raupach   Michael.Raupach@csiro.au
Peter Briggs   Peter.Briggs@csiro.au

Contributors:

Michael Raupach   Project oversight, model development
Peter Briggs   Data management, graphic design
Vanessa Haverd   Links to CSIRO climate modelling work
Edward King   Remote sensing, operational system, web interface
Matt Paget   Remote sensing, operational system
Cathy Trudinger   Data assimilation
    Upper layer relative soil moisture (percentile rank) for the most recently available week
Upper layer relative soil moisture (percentile rank) for the most recently available week. Blue is wetter than the 1961-1990 average for this month, red is drier.
 
Lower layer relative soil moisture (percentile rank) for the most recently available week
Lower layer relative soil moisture (percentile rank) for the most recently available week