MOD29E1D and MYD29E1D Global Sea Ice Attributes, Version 5

The MOD29E1D and MYD29E1D sea ice product data files include three Earth Observing System Data and Information System (EOSDIS) Core System (ECS) global attributes. These global attributes are stored as character strings in Parameter Value Language (PVL) format. Also, these global attributes as well as other attributes can be found in the associated metadata file, and are formatted as Extensible Markup Language (XML). The metadata file should be examined to determine if post-production changes were made to the metadata. Post-production metadata changes are not updated in the data file. Changes such as Quality Assessment (QA) updates are only reflected in the metadata file.

Use the following links to navigate through this document:

• CoreMetadata.0 (Inventory metadata)
• ArchiveMetadata.0 (Archive Metadata)
• StructMetadata.0 (Structural Metadata)
• Product Specific Attributes

CoreMetadata.0

Also known as inventory metadata, core metadata are used to populate the EOSDIS Core System (ECS) inventory, which allows users to locate granules of interest.

Object Name	Comments	Sample Value
ShortName	Earth Science Data Type (ESDT), name of product.	MOD29E1D
VersionID	ECS Version.	5
ReprocessingActual	Number of times processed.	reprocessed
ReprocessingPlanned	Expect that products will be reprocessed at least once.	further update is anticipated
LocalGranuleID		MOD29E1D.A2000070.005.2006256010347.hdf
DayNightFlag	Can be Day, Night, or Both.	Day
ProductionDateTime	Time granule was produced.	2006-09-13T01:03:47.000Z
LocalVersionID	Version of algorithm delivered from the Science Computing Facility (SCF).	SCF V5.0.0
PGEVersion	Version of production generation executable.	5.0.4
InputPointer	Location of the three input files in the production system.	"/MODAPSops3/archive/f2/running/...
RangeBeginningDate	Beginning date of the first scan line in the swath.	2000-03-10
RangeBeginningTime	Beginning time of the first scan line in the swath.	00:00:00
RangeEndingDate	Ending date of the last scan line in the swath.	2000-03-10
RangeEndingTime	Ending time of the last scan line in the swath.	23:59:59
ParameterName	Parameter for which QA statistics are given in this metadata object.	Sea_Ice_by_Reflectance_NP Ice_Surface_Temperature_NP Sea_Ice_by_Reflectance_SP Ice_Surface_Temperature_SP
AutomaticQualityFlag	Result of automated checks during the run of the algorithm that screens for significant amounts of anomalous data.	Passed
AutomaticQualityFlagExplanation	Explanation of result of automated QA checks made during execution.	No automatic quality assessment done in the PGE
ScienceQualityFlag	Set by snow investigator after post-production investigation.	Not investigated
ScienceQualityFlagExplanation	Explanation of Science Flag.	Visit http://landweb.nascom.nasa.gov/cgi-bin/QA_WWW/qaFlagPage.cgi?sat=terra for the product Science Quality status.
AssociatedSensorShortName		MODIS
AssociatedPlatformShortName		Terra
AssociatedInstrumentShortName		MODIS

CoreMetadata.0 Product Specific Attributes (PSAs)

The CoreMetadata.0 product specific metadata attributes can be found by using most search tools. Also, when using certain interfaces for tile numbers, these attributes may be used as search criteria to restrict searches.

Object Name	Comments	Sample Value
QAPercentMissingData	Summary quality assessment statistic based on the thermal data. Range is 0-100.	7
QAPercentCloudCover		31

ArchiveMetadata.0

This attribute contains information relevant to production of the data product. It also contains an alternate bounding of geographic coverage of the swath. These data are useful in determining what version of the algorithm was used to generate the product.

Object Name	Comment	Sample Value
EastBoundingCoordinate	Extent of swath coverage, in latitude and longitude	180.0
WestBoundingCoordinate		-180.0
NorthBounding Coordinate		90.0
SouthBounding Coordinate		-90.0
AlgorithmPackageAcceptanceDate	Algorithm descriptors	12-2004
AlgorithmPackageMaturityCode		normal
AlgorithmPackageName		MOD29_PR29 Terra or Aqua full and coarse products
AlgorithmPackageVersion		5
InstrumentName		Moderate Resolution Imaging SpectroRadiometer
PlatformShortName		Terra
ProcessingDateTime		2006-09-12T21:03:41.000000Z
LongName		MODIS/Terra Sea Ice Extent and IST Daily L3 Global 4km
ProcessingCenter		MODAPS
SPSOParameters		none
LocalityValue		Global
DESCRRevision	Version of Metadata Configuration File (MCF)	5.0
CharacteristcBinAngularSize		287.936014219062
CharacteristicBinSize		4.01080400e+03
GlobalGridColumns		4501
GlobalGridRows		4501
NumberOfInputGranules		209
ProcessingEnvironment		IRIX64 mtvs3 6.5 10070055 IP35

StructMetadata.0

These attributes specify the content and structure of an HDF-EOS file and are not discussed further here. For more information, please see the 2001 white paper titled An HDF-EOS and Data Formatting Primer for the ECS Project.

Product Specific Attributes

These attributes are specific to the MOD29E1D and MYD29E1D sea ice product.

Attribute Name	Comment	Sample Value
L1BCalibrationQuality		marginal
L1BMissionPhase		A&E
L1BNadirPointing		Yes
L1BVersionID	Version of L1B processing algorithm	2000-11-01
L1BAutoQA_EV_1KM_RefsB	Result of generalized quality analysis of L1B data	Suspect
SCFAlgorithmVersion	SCF versioning tracking information	$Id: MOD_PR29_AA...