Access restrictions for Bluelink data
The latest model runs completed under Bluelink are the OFAM3 pinup run, and version 3p5 of the Bluelink ReANalysis (BRAN3p5). The data use agreement for these runs is currently being finalised and will be made available soon. It is anticipated that these new datasets will be made freely available for non-commercial purposes.
Access to model data output is restricted to registered users. If you know of someone who would be interested in the output then please direct them to our web page at here.
External users can access the data using an OPeNDAP client(Information about OPeNDAP is available at http://www.opendap.org/).
A tool named getnc which enables OPeNDAP data to be read into matlab is described at http://www.marine.csiro.au/sw/matlab-netcdf.html.
Datasets that are currently available are then found under 8 subdirectories BRAN2.2, BRAN2.1, MonthlyMeans, SPINUP4Means, SPINUP5, SPINUP4Means, SPINUP5Means and SPINUP4Means. To understand the names of these directories we need to know a little more about the hindcast run itself. First there was a spinup run – SPINUP4; this goes from 1 January 1991 to 31 March 2005. The spinup was then restarted as SPINUP5 with some changes intended to correct a warm bias. One important change was to one of the parameters of the Chen mixed-layer scheme. SPINUP5 was started using the 1 January 1993 fields of SPINUP4 and continued to 31 December1997.
The final state of SPINUP5 was then used as initial conditions for the BRAN2.1 reanalysis run. We have archived the output from 14 October 1992 to 31 December 2006. It should be noted that the BRAN2.1 run is itself divided into two parts in which different forcing fields were used. The first part was from 1 July 1992 to 29 August 2002 and was forced with the ERA40 data (2.5 X 2.5 degrees, 6 hourly). The second part was forced by high resolution ECMWF forecast fields (0.5 X 0.5 degres, 6 hourly).
BRAN2.2 was then started using the end part of the BRAN2.1 run for its initial conditions. It uses a different method of data assimilation, however. Note that BRAN2.2 is referred to as BRAN_EXT in some documentation
The relevant data are spread over 8 subdirectories which are, in turn, divided into other subdirectories. The base subdirectories are named BRAN2.2, BRAN2.1,SPINUP4, SPINUP5, BRAN2.1MonthlyMeans, SPINUP4and5Means,SPINUP4Means and SPINUP5Means, described below and on the BRAN page.
NOTE: THE FOLLOWING DETAILS WILL SOON BE UPDATED (29 OCtober 2013)
- eta, temperature, salinity, u,v and w
All of these fields are stored as daily means, one per file. They have names like ocean_VAR_yyyy_mm_dd.nc where VAR can be eta, temp, salt, u, v or w. eta, the only 2-dimensional field here, is the surface height (NB the model is not forced by atmospheric pressure, so the isostatic response is missing). The units are MKS for all variables and u and v are eastwards and northwards pointing velocity components respectively. Each field is in a subdirectory VAR. Thus the url to the first salinity file is http://www.marine.csiro.au/dods/nph-dods/dods-data/bl/BRAN2.1/salt/ocean_salt_1992_10_14.nc. The url to the last temperature file in the high resolution run is http://www.marine.csiro.au/dods/nph-dods/dods-data/bl/BRAN2.1/temp/ocean_temp_2005_03_28.nc. The BRAN2.2 fields are very similar. For example there is an eta field at http://www.marine.csiro.au/dods/nph-dods/dods-data/bl/BRAN2.2/eta/ocean_eta_2007_02_10.nc.html.
- surface forcing fields
The forcing files are not available because we have used ECMWF products and have not received permission from ECMWF to redistribute them.
- miscellaneous files
These are stored in the subdirectory misc. At present this contains the grid specifications file. See for example http://www.marine.csiro.au/dods/nph-dods/dods-data/bl/SPINUP4/misc/grid_spec.nc.
BRAN2.1MonthlyMeans is at http://www.marine.csiro.au/dods/nph-dods/dods-data/bl/BRAN2.1MonthlyMeans. It contains three types of monthly mean files for the BRAN2.1 run.
Files of the form VAR_yyyy_mm.nc where VAR = eta, salt, temp, u or v (with the obvious meanings), yyyy is the year and mm is the month. An example url is http://www.marine.csiro.au/dods/nph-dods/dods-data/bl/BRAN2.1MonthlyMeans/eta_2001_06.nc
These are climatological monthly means of the BRAN2.1 run and have names like VAR_mm.nc. An example url is http://www.marine.csiro.au/dods/nph-dods/dods-data/bl/BRAN2.1MonthlyMeans/u_11_BRAN2.1.nc
SPINUP4and5Means, SPINUP4Means and SPINUP5Means are very similar. Note that Spinup4and5 is actually a composite constructed using 1993-1997 Spinup5 and 1998-2004 spinup4 inclusive. SPINUP4Means and SPINUP5Means each have a subdirectory MonthlyMeans. Likewise SPINUP4Means and SPINUP4and5Means have a subdirectory MonthlyClimatology. The contents of these directories are described below. (Note that, for historical reasons, different naming conventions were followed for spinup4and5.).
Monthly mean files of the form VAR_yyyy_mm.nc where VAR = eta, salt, temp, u or v (with the obvious meanings), yyyy is the year and mm is the month. These files for spinup4 were calculated for the entire spinup run which goes from January 1991 to March 2005 inclusive. An example url for spinup4 is http://www.marine.csiro.au/dods/nph-dods/dods-data/bl/SPINUP4Means/MonthlyMeans/eta_2001_06.nc. Spinup5 monthly means were only calculated from January 1993 to December 1997. An example url for spinup5 is http://www.marine.csiro.au/dods/nph-dods/dods-data/bl/SPINUP5Means/MonthlyMeans/u_1996_06.nc.
Monthly climatology files of the form VAR_mm.nc where VAR = eta, salt, temp, u or v (with the obvious meanings) and mm is the month. These files were calculated using the January 1994 to December 2004 portion of the spinup4 run. An example url is http://www.marine.csiro.au/dods/nph-dods/dods-data/bl/SPINUP4Means/MonthlyClimatology/temp_06.nc.
Monthly climatology files of the form VAR_mm_spinup_4_5.nc where VAR = eta, salt, temp, u or v (with the obvious meanings) and mm is the month. These files were calculated using spinup5 for January 1994 to December 1997, then spinup4 until December 2004. An example url is http://www.marine.csiro.au/dods/nph-dods/dods-data/bl/SPINUP4and5Means/MonthlyClimatology/temp_06_spinup_4_5.nc.