The Rubric-Q validation tool (http://www.geoviqua.org/MetadataVisualization.htm) reports a parse error for the following ISO document:

https://www.aoncadis.org/dataset/2010_niskin_bottle_data_chlorophyll_nutrients_picoplankton.iso19139

The error says: XML Parsing Error: not well-formed
Location: http://www.ogc.uab.cat/cgi-bin/geossback/GEOSSBack.cgi?accio=EstilXML&AfegirEstil=rubric&URL=https://www.aoncadis.org/dataset/2010_niskin_bottle_data_chlorophyll_nutrients_picoplankton.iso19139
Line Number 79, Column 356

The problem appears to be caused by a character in the project description field for this metadata, which includes the greek letter "mu", commonly used to denote "micro" units. It is also called the "micro sign".

The cause could be caused by the HTTP header for this document, which reports that the character set for this document is ISO-8559-1. Nathan believes this is almost certainly not the actual character set encoding used for this document. It is not yet clear how we find out exactly what the actual character set encoding is for our ISO documents.