Hi there folks.. I'm trying to generate a file containing linear trends over specified periods (nominally 1960-2008) which are scaled to represent a linear trend for 50 years.
A first crack at this file, and a corresponding header dump can be found at: http://www.marine.csiro.au/~dur041/100709_LinearChange.txt I'm a little confused how best to represent this, as I'm uncertain how to correctly create a simple climatology (mean values over a specified period) and the associated time dimension/attribute, let alone their perturbation fields, honouring the CF-1.4 conventions. I have generated such a file and run this against the CF-1.4 compliance checker, and aside from some general errors regarding syntax of standard_name attributes, have hit some troubles with units etc.. In particular, the changes represent units: degree_C/50Yrs, however this is not a valid unit in CF-1.4: ------------------ Checking variable: thetao_change ------------------ ERROR (3.3): Invalid syntax for 'standard_name' attribute: 'linear_potential_temperature_change_1960-2008' ERROR (3.1): Invalid units: degree_C/50Yrs The standard_name attributes indicate a simple syntax issue (I'm using a "-" value to represent the time period over which the linear trend is calculated): ------------------ Checking variable: soi ------------------ ERROR (3.3): Invalid syntax for 'standard_name' attribute: 'southern_oscillation_index_regression_1960-2008' I wonder if there is another variable attribute that I should set which expresses the years over which the regression was undertaken, and remove the "1960-2008" from the standard_name. I'd appreciate some pointers how to best create this file, best conforming with CF-1.4. Cheers, Paul ************************************* Paul J. Durack PhD Candidate (CSIRO/UTas - QMS) CSIRO Marine and Atmospheric Research GPO Box 1538 Hobart TAS 7001 Telephone: +61 (3) 6232 5283 Mobile: +61 (0) 408840428 Email: paul.dur...@csiro.au Web: http://www.cmar.csiro.au/ ************************************* _______________________________________________ CF-metadata mailing list CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
