_auxiliary.xml

<?xml version="1.0" encoding="UTF-8"?>
<Indexer>
    <coverages>
        <coverage>
            <schema name="Temperature_surface">
                <attributes>the_geom:Polygon,location:String,imageindex:Integer,time:java.util.Date</attributes>
            </schema>
            <origName>Temperature_surface</origName>
            <name>Temperature_surface</name>
        </coverage>
    </coverages>
</Indexer>

indexer.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Indexer>
    <domains>
        <domain name="time">
            <attributes>
                <attribute>time</attribute>
            </attributes>
        </domain>
    </domains>
    <coverages>
        <coverage>
            <schema name="Temperature_surface">
                <attributes>the_geom:Polygon,location:String,imageindex:Integer,time:java.util.Date</attributes>
            </schema>
            <domains>
                <domain ref="time"/>
            </domains>

            <origName>Temperature_surface</origName>
            <name>Temperature_surface</name>
        </coverage>
    </coverages>
    <parameters>
        <parameter name="AuxiliaryFile" value="/Users/devon/Data/grib-user/_auxiliary.xml"/>

        <parameter name="AbsolutePath" value="true"/>
    </parameters>

</Indexer>