Categorize URL
keywords https://erddap.bco-dmo.org/erddap/categorize/keywords/index.xhtml?page=1&itemsPerPage=1000
long_name https://erddap.bco-dmo.org/erddap/categorize/long_name/index.xhtml?page=1&itemsPerPage=1000
standard_name https://erddap.bco-dmo.org/erddap/categorize/standard_name/index.xhtml?page=1&itemsPerPage=1000
variableName https://erddap.bco-dmo.org/erddap/categorize/variableName/index.xhtml?page=1&itemsPerPage=1000