<?xml version="1.0" encoding="UTF-8"?>
    <thredds:catalog xmlns:thredds="http://www.unidata.ucar.edu/namespaces/thredds/InvCatalog/v1.0"
                 xmlns:xlink="http://www.w3.org/1999/xlink"
                 xmlns:bes="http://xml.opendap.org/ns/bes/1.0#">
   <thredds:service name="dap" serviceType="OPeNDAP" base="/opendap/hyrax"/>
   <thredds:service name="file" serviceType="HTTPServer" base="/opendap/hyrax"/>
        <thredds:dataset name="/greenocean" ID="/opendap/hyrax/greenocean/">
            <thredds:catalogRef name="GCB_2021" xlink:href="GCB_2021/catalog.xml" xlink:title="GCB_2021"
                          xlink:type="simple"
                          ID="/opendap/hyrax/greenocean/GCB_2021/"/>
            <thredds:catalogRef name="GridFED" xlink:href="GridFED/catalog.xml" xlink:title="GridFED"
                          xlink:type="simple"
                          ID="/opendap/hyrax/greenocean/GridFED/"/>
            <thredds:catalogRef name="RECCAP" xlink:href="RECCAP/catalog.xml" xlink:title="RECCAP"
                          xlink:type="simple"
                          ID="/opendap/hyrax/greenocean/RECCAP/"/>
        </thredds:dataset>
    </thredds:catalog>