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New version of XML schema file (cf-convention#459)
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‎Data/schema-files/cf-standard-name-table-2.0.xsd‎

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<?xml version="1.0" encoding="UTF-8"?>
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<!-- edited with XMLSPY v5 rel. 3 U (http://www.xmlspy.com) by Bob Drach (UNIV OF CA LLNL) -->
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<!--W3C Schema generated by XMLSPY v5 rel. 2 U (http://www.xmlspy.com)-->
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<!--March 2024 Updated by Lars Bärring (SMHI Rossby Centre).-->
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<!--See issue cf-convention.github.io/#457 for overview, and specific issue references in the documentation attributes.-->
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<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="qualified">
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<xs:element name="alias">
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<xs:annotation>
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<xs:documentation>The alias element contains one or more entry_id element(s) with the id of the entry containing the definition. It is intended as a mechanism for modifying standard names in a backward compatible fashion. Typically, there is one entry_id, but in a few instances there are two entry_id, for example if a standard name is divided into upwards and downwards alternatives (issue cf-conventions/#509).</xs:documentation>
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</xs:annotation>
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<xs:complexType>
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<xs:sequence>
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<xs:element ref="entry_id" maxOccurs="2"/>
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</xs:sequence>
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<xs:attribute name="id" type="xs:ID" use="required"/>
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</xs:complexType>
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</xs:element>
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<xs:element name="amip" type="xs:string">
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<xs:annotation>
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<xs:documentation>AMIP identifier</xs:documentation>
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</xs:annotation>
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</xs:element>
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<xs:element name="canonical_units" type="xs:string">
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<xs:annotation>
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<xs:documentation>Standard SI units for this variable. In a netCDF file, the variable should have units that are translatable to the canonical units.</xs:documentation>
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</xs:annotation>
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</xs:element>
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<xs:element name="contact" type="xs:string">
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<xs:annotation>
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<xs:documentation>The person or institution that is responsible for maintaining the standard name table.</xs:documentation>
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</xs:annotation>
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</xs:element>
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<xs:element name="conventions" type="xs:string">
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<xs:annotation>
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<xs:documentation>Conventions string: "CF-StandardNameTable-X" where X is the version number (issue cf-conventions/#500).</xs:documentation>
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</xs:annotation>
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</xs:element>
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<xs:element name="description" type="xs:string">
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<xs:annotation>
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<xs:documentation>A textual description of the variable.</xs:documentation>
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</xs:annotation>
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</xs:element>
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<xs:element name="entry">
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<xs:annotation>
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<xs:documentation>An entry element contains the description, units, and correspondence to other standard name schemes, for one variable.</xs:documentation>
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</xs:annotation>
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<xs:complexType>
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<xs:all>
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<xs:element ref="description"/>
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<xs:element ref="canonical_units"/>
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<xs:element ref="grib" minOccurs="0"/>
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<xs:element ref="amip" minOccurs="0"/>
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</xs:all>
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<xs:attribute name="id" type="xs:ID" use="required"/>
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</xs:complexType>
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</xs:element>
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<xs:element name="entry_id" type="xs:IDREF">
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<xs:annotation>
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<xs:documentation>See alias.</xs:documentation>
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</xs:annotation>
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</xs:element>
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<xs:element name="first_published_date" type="xs:dateTime">
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<xs:annotation>
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<xs:documentation>Datetime when the standard name table was first published (issue cf-conventions/#511).</xs:documentation>
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</xs:annotation>
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</xs:element>
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<xs:element name="grib" type="xs:string">
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<xs:annotation>
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<xs:documentation>GRIB parameter code. ECMWF codes start with 'E', NCEP codes with 'N'. Standard FM92 codes are not prefaced.</xs:documentation>
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</xs:annotation>
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</xs:element>
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<xs:element name="institution" type="xs:string">
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<xs:annotation>
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<xs:documentation>Institution that maintains the standard name table.</xs:documentation>
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</xs:annotation>
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</xs:element>
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<xs:element name="last_modified" type="xs:dateTime">
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<xs:annotation>
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<xs:documentation>Datetime when last modified.</xs:documentation>
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</xs:annotation>
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</xs:element>
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<xs:element name="version_number" type="xs:string">
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<xs:annotation>
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<xs:documentation>Version number of the standard name table.</xs:documentation>
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</xs:annotation>
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</xs:element>
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<xs:element name="standard_name_table">
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<xs:annotation>
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<xs:documentation>Top level element of the table.</xs:documentation>
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</xs:annotation>
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<xs:complexType>
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<xs:sequence>
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<xs:element ref="version_number"/>
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<xs:element ref="conventions"/>
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<xs:element ref="first_published_date"/>
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<xs:element ref="last_modified"/>
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<xs:element ref="institution"/>
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<xs:element ref="contact"/>
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<xs:element ref="entry" maxOccurs="unbounded"/>
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<xs:element ref="alias" minOccurs="0" maxOccurs="unbounded"/>
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</xs:sequence>
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</xs:complexType>
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</xs:element>
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</xs:schema>

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