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I see in the NcML cookbook how to remove attributres for specific variables. Is there also a way to remove "Global Attributes" from a THREDDS aggregation dataset? https://www.unidata.ucar.edu/software/thredds/current/netcdf-java/ncml/v2.2/Cookbook.html My reason for wanting this is that specific "history" metadata for the 2nd to last NetCDF file is creeping into the (penultimate) aggregation. I would like to remove/clear the "history" attribute in the Global info, or change it to a custom value within the specific catalog. e.g., http://tds.hycom.org/thredds/dodsC/GLBa0.08/expt_91.0.html history: archv2ncdf2d for run date 2013120818
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