BC2C

Software

Support

Contact

Phone: 1300 5 WATER (1300 5 92837)
Email: support@ewater.org.au

eWater
Innovation Centre
University of Canberra
ACT 2601
www.ewater.org.au

History & Credit

Version history

Version 1.0.5

Released: Aug 4, 2008

This is a minor release with science changes to reflect the recent journal publication.

Science Changes

Replaced Canopy Closure (CC) function with simple hydrological delay curve: from "CC = 1 + 3000 / precipitation" to " CC = 15"

Overland salinity is now calculated in the same way as lateral flow salinity with a default value of 0.15 of groundwater salinity + rainfall salinity

Version 1.0.4

Released: Mar 16, 2007

This is a minor release simply removing the licence time-bomb.

Version 1.0.3b

Released: Aug 31, 2006

This is a minor release with a focus on usability.

Bug Fixes

Two of the results layers: ?Impact on Salt Load? and ?Impact on Flow?, were reported in the units 1/100 of tonne per km^2 of trees planted and 1/100 of ML per km^2 of trees planted respectively. This has been changed to report in tonnes per km^2 of trees planted, and the ?Impact on Flow? layer in ML per km^2 of trees planted.

Software Enhancements

The terrain analysis has been split into two stages to allow for editing of GRUs without the need to calculate spatial statistics until the user is finished editing. The user can now merge and delete GRUs and use the ?Clean GRU Map? button to visually display the results. Once happy with the results, the ?Finish GRU Map? button will complete the terrain analysis.

The 'remove noise' Class now can be set to protect GRUs that have a valid node. These GRUs will not be removed if this option (available in the User Options Dialog 'File > User Options') is set to true.

The BC2C software has been migrated to the .NET 2.0 framework.

The ShapeFileLoader no longer uses the Microsoft?s data access components so should be more robust.

When selecting GRUs in the ?Run Scenario Module?, after having run the model, a pop-up window will appear giving the user some useful summary statistics for the GRUs selected.

Science Changes

The groundwater salinity for each GRU is now adjusted using a relationship between groundwater salinity and rainfall. This more closely matches measured data.

Issues

The move to .NET 2.0 has introduced speed improvements to most of the Raster and TimeSeries Based analysis but slowed most Vector based analysis. The slowdown is due to the poor performance of the ?.Contains()? method in System.Collections when they contain copy by reference objects. We are hopeful this will be fixed by Microsoft in the near future.

Version 1.0.1b

Released: Mar 1, 2006

This is a minor release with a focus on speed and memory usage.

Bug Fixes
Addressed an issue where single cell sub-catchments with valid nodes were not assigned a value for length and height.

Speed and memory improvements

The support for large Raster datasets has been significantly improved through a number of changes. These changes can be set in the User Options Dialog ?File > User Options?

All Raster states now invisibly support single precision. This will almost halve the memory usage of most modules with no loss in function or degradation of results.

A new disk based Raster State has been added called DiskTriLine that is much faster than the previous disk based Raster support states and has the added bonus of using typically less than 1 mb of memory per Raster. It can be activated in the User Options dialog. By default a Raster State will be disk based if it is larger than 30 million cells.

Complete re-write of the Raster spatial apportionment Class. This Class is used in the terrain analysis module, the rainfall and vegetation scenario modules, and now (if a DEM is loaded) in the GRU parameterisation module. This new Class uses very little memory and is substantially faster than the previous class. If a DEM is not loaded the GRU parameterisation module will revert to the previously used Vector import Class.

Complete re-write of the noise removal Class used in the terrain analysis module. It is now significantly faster and uses a fraction of the memory of the old Class.

The Node apportioning Method has been re-written to improve speed.

The ellipse fitting Class has been tweaked to improve speed.

The recursive select Method used by the node select tool has been completely re-written and is now orders of magnitude faster on large GRU maps.

Tried to improve a weird speed bottleneck in the modify vegetation function of the vegetation scenario module.

The Main Form can now be maximised on certain modules

Version 1.0.0b

Released: Oct 17, 2005

This is the first public Beta Release of BC2C 1.0.0

The download also contains sample data sets under C:\Program Files\Toolkit\BC2C\Data\ and the user manual under C:\Program Files\Toolkit\BC2C\Documentation\User Manual\

Credit

Sponsors:

The Development Team acknowledges funding from the Murray-Darling Basin Commission through SI&E Grant Number D9004: ?Catchment characterisation and hydrogeological modelling to assess salinisation risk and effectiveness of management options?, and also through Grant Number D2013: ?Integrated Assessment of the Effects of Land use Changes on Water Yield and Salt Loads?.

BC2C Model Development Team:

Glen Walker - CSIRO
Mat Gilfedder - CSIRO
Warrick Dawes - CSIRO
Matt Stenson - CSIRO
Ray Evans - Salient Solutions Australia
Trevor Dowling - CSIRO
Jenet Austin - CSIRO

Software Development:

Matt Stenson - CSIRO (Lead Developer)
Joel Rahman ? CSIRO
The Toolkit Team