Page History

Element Description

The Spatial Information element stores information about the reference frame from which horizontal and vertical spatial domains are measured. The horizontal reference frame includes fields for Geodetic Model, Geographic Coordinates, and Local Coordinates. The Vertical reference frame includes fields for altitudes (elevations) and depths.

Best Practices

Providing Spatial Information is optional, but encouraged. This element can be used to provide horizontal and/or vertical coordinate system information. 

The Spatial Coverage Type field is required for Spatial Information. 

Spatial Coverage Type: Denotes the type of spatial coverage of the collection. While this field is not currently controlled, recommend providing one of the spatial coverage type enumeration values:

EARTH/GLOBAL, HORIZONTAL, VERTICAL, ORBITAL, HORIZONTAL_VERTICAL, ORBITAL_VERTICAL, HORIZONTAL_ORBITAL, HORIZONTAL_VERTICAL_ORBITAL, LUNAR

Vertical Spatial Information

The following sub-elements can be used to describe Vertical Coordinate Systems.

There are 2 categories for Vertical Coordinate Systems including:

(1) Altitude System Definition 

Altitude System Definition should be used to describe data with a vertical component that is above-ground. Sub-elements under Altitude System Definition are summarized below:

• • • Datum Name: The name of the vertical datum the data is encoded in. Vertical datums define a level reference surface from which vertical measurements are compared. There are many standard vertical datums. If a standard vertical datum is used, it is recommended that the EPSG vertical datum name be provided. 
    • Distance Units: The units in which altitude measurements are recorded. This field is controlled and must be selected from one of the following values: HectoPascals, Kilometers, Millibars
    • Resolutions: The minimum distance possible between two adjacent values, expressed in distance units of measure for the collection.
      

(2) Depth System Definition

Depth System Definition should be used to describe data with a vertical component that is below-ground. Sub-elements under Depth System Definition are summarized below:

• • • Datum Name: The name of the vertical datum the data is encoded in. Vertical datums define a level reference surface from which vertical measurements are compared. There are many standard vertical datums. If a standard vertical datum is used, it is recommended that the EPSG vertical datum name be provided.
      
    • Distance Units: The units in which depth measurements are recorded. This field is controlled and must be selected from one of the following values: Fathoms, Feet, HectoPascals, Meters, Millibars
    • Resolutions: The minimum distance possible between two adjacent values, expressed in distance units of measure for the collection.

Metadata Validation and QA/QC

All metadata entering the CMR goes through the below process to ensure metadata quality requirements are met. All records undergo CMR validation before entering the system. The process of QA/QC is slightly different for NASA and non-NASA data providers. Non-NASA providers include interagency and international data providers and are referred to as the International Directory Network (IDN).

Please see the expandable sections below for flowchart details.

Dialect Mappings

Dialect Mappings

Providing Spatial_Info is optional in DIF 10 (Cardinality: 0..1).

Note: There are no Vertical Coordinate System fields in DIF 10 - vertical information can be provided in the Vertical_Spatial_Info element. For details on Vertical_Spatial_Info please see the Spatial Extent wiki page.

<SpatialInfo>
  <SpatialCoverageType>HORIZONTAL_VERTICAL</SpatialCoverageType>
  <VerticalCoordinateSystem> 
    <AltitudeSystemDefinition> 
      <DatumName>North American Vertical Datum 1988</DatumName>
      <DistanceUnits>Kilometers</DistanceUnits>
      <Resolutions>
	    <Resolution>10</Resolution>
      </Resolutions>
    </AltitudeSystemDefinition>
  </VerticalCoordinateSystem>
</SpatialInfo>

"SpatialInformation": {
  "SpatialCoverageType": "HORIZONTAL_VERTICAL"

<Spatial_Coverage> 
  <Spatial_Info>
    <Spatial_Coverage_Type>Horizontal</Spatial_Coverage_Type>
    <Horizontal_Coordinate_System>
      <Geodetic_Model>
		<Horizontal_DatumName>North American Datum 1983</Horizontal_DatumName>
        <Ellipsoid_Name>GRS 1980</Ellipsoid_Name>
        <Semi_Major_Axis>6378137</Semi_Major_Axis>
        <Denominator_Of_Flattening_Ratio>298.257222101</Denominator_Of_Flattening_Ratio>
      </Geodetic_Model>
      <Geographic_Coordinate_System>
		<GeographicCoordinateUnits>Decimal Degrees</GeographicCoordinateUnits>
		<LatitudeResolution>0.5</LatitudeResolution>
		<LongitudeResolution>0.5</LongitudeResolution>
      </Geographic_Coordinate_System>
    </Horizontal_Coordinate_System>	
  </Spatial_Info>
</Spatial_Coverage>
----------------------------------------------------------------------------------------------------------------------------
<Data_Resolution>
  <Latitude_Resolution>50 km</Latitude_Resolution>
  <Longitude_Resolution>50 km</Longitude_Resolution>
  <Horizontal_Resolution_Range>50 km - < 100 km or approximately .5 degree - < 1 degree</Horizontal_Resolution_Range>
  <Temporal_Resolution>Hourly - < Daily</Temporal_Resolution>
</Data_Resolution>

"SpatialInformation": [
  {
    "SpatialCoverageType": "HORIZONTAL",
    "HorizontalCoordinateSystem": {
      "GeodeticDatum": [
        {
          "HorizontalDatumName": "North American Datum 1983",
          "EllipsoidName": "GRS 1980", 
          "SemiMajorAxis": "6378137",
          "DenominatorOfFlatteningRatio": "298.257222101"
        }
      ],
      "GeographicCoordinateSystem": [
        {
          "GeographicCoordinateUnits": "DecimalDegrees",
          "LatitudeResolution": "0.5",
          "LongitudeResolution": "0.5"
        }
      ]
    }
  }
]	

ECHO 10

Providing the Spatial Info element is optional in ECHO 10 (Cardinality: 0..1)

1 - 80 characters

This attribute denotes whether the collection's spatial coverage requires horizontal, vertical, or both in the spatial domain and coordinate system definitions. This field is not controlled in ECHO 10, however, it is recommended that one of the UMM SpatialCoverageType enumeration values be provided in order to reduce translation errors (HORIZONTAL, VERTICAL, ORBITAL, HORIZONTAL_VERTICAL, ORBITAL_VERTICAL)

1 - 80 characters

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1 - 2048 characters

The means used to encode measurements.

This entity stores the minimum distance possible between two adjacent values, expressed in the distance units of measure for collection.

1 - 80 characters

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1 - 2048 characters

This entity stores the minimum distance possible between two adjacent values, expressed in the distance units of measure for collection.

1 - 80 characters

1 - 255 characters

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Units of measure used for the geodetic latitude and longitude resolution values. E.g. Decimal Degrees or Degrees Minutes Seconds.

For lat, a 2 digit decimal number from 0-90

+ or absence of - for values north of equator; - for all others.

For lon, a 3 digit decimal number from 0-180

+ or absence of - for values west of prime meridian; - for all others.

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1 - 2048 characters

<SpatialInfo>
  <SpatialCoverageType>HORIZONTAL_VERTICAL</SpatialCoverageType>
  <HorizontalCoordinateSystem>
    <GeodeticModel>
      <HorizontalDatumName>North American Datum 1983</HorizontalDatumName> 
      <EllipsoidName>GRS 1980</EllipsoidName>
      <SemiMajorAxis>6378137</SemiMajorAxis>
      <DenominatorOfFlatteningRatio>298.257222101</DenominatorOfFlatteningRatio>
    </GeodeticModel>
    <GeographicCoordinateSystem>
      <GeographicCoordinateUnits>Decimal Degrees</GeographicCoordinateUnits>
      <LatitudeResolution>0.5</LatitudeResolution>
      <LongitudeResolution>0.5</LongitudeResolution>
    </GeographicCoordinateSystem>
  </HorizontalCoordinateSystem>
  <VerticalCoordinateSystem> 
    <AltitudeSystemDefinition> 
      <DatumName>North American Vertical Datum 1988</DatumName>
      <DistanceUnits>Kilometers</DistanceUnits>
      <Resolutions>
	    <Resolution>10</Resolution>
      </Resolutions>
    </AltitudeSystemDefinition>
  </VerticalCoordinateSystem>
</SpatialInfo>

"SpatialInformation": {
  "SpatialCoverageType": "HORIZONTAL_VERTICAL",
  "HorizontalCoordinateSystem": {
    "GeodeticDatum": [
      {
        "HorizontalDatumName": "North American Datum 1983",
        "EllipsoidName": "GRS 1980", 
        "SemiMajorAxis": "6378137",
        "DenominatorOfFlatteningRatio": "298.257222101"
      }
    ],
    "GeographicCoordinateSystem": [
      {
        "GeographicCoordinateUnits": "DecimalDegrees",
        "LatitudeResolution": "0.5",
        "LongitudeResolution": "0.5"
      }
    ]
  },
  "VerticalCoordinateSystem": {
    "AltitudeSystemDefinition": [
      {
        "DatumName": "North American Vertical Datum 1988",
        "DistanceUnits": "Kilometers",
        "Resolutions": "10"
      }
    ]
  }
}

ISO 19115-2 MENDS

There is currently no mapping between UMM-C and ISO 19115-2 MENDS for Spatial Information. 

ISO 19115-2 MENDS Path

N/A

N/A

ISO 19115-2 SMAP

There is currently no mapping between UMM-C and ISO 19115-2 SMAP for Spatial Information.

ISO 19115-2 SMAP Path

N/A

N/A

UMM Migration

Future Mappings

ISO 19115-1

There is currently no mapping between UMM-C and ISO 19115-1 for Spatial Information.

ISO 19115-1 Path

N/A

N/A

  }
}

UMM Migration

N/A

History

UMM Versioning

History

UMM Versioning

ARC Documentation