MOD10C1 and MYD10C1 Global Snow Cover Attributes, Version 5

The MOD10C1 and MYD10C1 snow cover 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.

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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. MOD10C1
VersionID ECS Collection Version. 5
ReprocessingActual Number of times processed. reprocessed
ReprocessingPlanned Expect that products will be reprocessed at least once. further update is anticipated
LocalGranuleID MOD10C1.A2000063.005.2006254151412.hdf
DayNightFlag both
ProductionDateTime Time granule was produced. 2006-09-11 15:14:12.0
LocalVersionID Version of algorithm delivered from the Science Computing Facility (SCF). SCF V5.0.0
PGEVersion Version of PGE in MODAPS. 5.0.6
InputPointer Names of input files. MOD10A1.A200063...
RangeBeginningDate Beginning date of the first scan line in the swath. 2000-03-03
RangeBeginningTime Beginning time of the first scan line in the swath. 00:00:00.0000000
RangeEndingDate Ending date of the last scan line in the swath. 2000-03-03
RangeEndingTime Ending time of the last scan line in the swath. 23:59:59.0000000
ParameterName Parameter for which QA statistics are given in this metadata object. Global Snow Cover
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 for the product Science Quality status.
OperationalQualityFlag Passed
OperationalQualityFlagExplanation Explanation of science flag. Passed
QAPercentMissingData 0-100 0
QAPercentCloudCover 0-100 29
PlatformShortName Terra
InstrumentShortName MODIS
SensorShortName MODIS

CoreMetadata.0 Product Specific Attributes (PSAs)

The CoreMetadata.0 product specific metadata attributes can be found by using most search tools.

Object Name Comments Sample Value
QAPercentGoodQuality Summary quality assessment statistics for the data product.
Note: pixels identified as cloud are considered Good Quality.
QAPercentOtherQuality 27
SnowCoverPercent Summary percentage of snow-covered land. 44


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
PlatformShortName Short name for the platform. Terra
EastBoundingCoordinate Extent of swath coverage in latitude and longitude. 180.0
WestBoundingCoordinate -180.0
NorthBounding Coordinate 90.0
SouthBounding Coordinate -90.0


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

There are no product specific attributes for this data set.