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MOD10_L2 and MYD10_L2 Global Attributes

The MOD10C2 snow cover product includes three EOSDIS Core System (ECS) global attributes; these are stored as long character strings in parameter value language (PVL) format. MOD10C2 also includes product specific attributes.

CoreMetadata.0
ArchiveMetadata.0
StructMetadata.0
Product Specific Attributes

CoreMetadata.0

Object Name Comments Sample Value
ShortName ESDT1 name of product MOD10_L2
VersionID ECS Version 1
ReprocessingActual Number of times processed processed once
ReprocessingPlanned Expect that products will be reprocessed at least once further update is anticipated
LocalGranuleID MOD10_L2.A1999053.0525.002.1999323203947.hdf
DayNightFlag Snow will have either Day or Both Day
ProductionDateTime Time granule was produced 1999-11-19T20:40:39.000Z
LocalVersionID Version of algorithm delivered from the SCF2. SCF V2.0
PGEVersion Version of production generation executable 2
InputPointer Location of input files in the production system MOD02HKM.A1999053.0525.002.1999218204608.hdf
RangeBeginningDate Beginning date of the first scan line in the swath 1999-02-22
RangeBeginningTime Beginning time of the first scan line in the swath 05:25:00.000000
RangeEndingDate Ending date of the last scan line in the swath 1999-02-22
RangeEndingTime Ending time of the last scan line in the swath 05:30:00.000000
ExclusionGRingFlag N
GRingPointLatitude Geographic latitude bounds of swath coverage [57.728020, 52.490131, 36.089413, 39.877670]
GringPointLongitude Geographic longitude bounds of swath coverage [67.769638, 104.349876, 93.029350, 66.612961]
GRingPointSequenceNo [1,2,3,4]
OrbitNumber 3443
EquatorCrossingLongitude 71.039488
EquatorCrossingDate 1999-02-22
EquatorCrossingTime 05:40:43.058480
ParameterName Parameter for which QA statistics are given in this metadata object 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 errors detected in processing
OperationalQualityFlag Set by production system Passed
OperationalQualityFlagExplanation Explanation of Operational Flag Nominal production
ScienceQualityFlag Set by snow investigator after post-production investigation Not being investigated
ScienceQualityFlagExplanation Explanation of Science Flag Not selected for investigation
QAPercentMissingData 1
QAPercentCloudCover 34
AncillaryInputPointer Location of geolocation input product in production system .../MOD03.A1999053.0525.002.1999217114009.hdf
AncillaryInputType Type of ancillary data referenced by pointer Geolocation
AssociatedPlatformShortName "AM-1" or "Terra"
AssociatedInstrumentShortName "MODIS"
AssociatedSensorShortName "VNIR" or "SWIR"
Product Specific Attributes (PSA)
QAPercentGoodQuality Summary quality assurance statistics for data product. 90
QAPercentOtherQuality 3
QAPercentNotProducedCloud 5
QAPercentNotProducedOther 2
GranuleNumber Unique granule identifier 254
SnowCoverPercent Summary percentage of snow-covered land 0-100

1 Earth Science Data Type (ESDT)
2 Science Computing Facility (SCF)

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 104.349879
WestBoundingCoordinate 66.610250
NorthBounding Coordinate 57.737857
SouthBounding Coordinate 35.936948
AlgorithmPackageAcceptanceDate Algorithm descriptors 1999-04-06
AlgorithmPackageMaturityCode pre-launch
AlgorithmPackageName MOD10V2
AlgorithmPackageVersion Version 2.2
InstrumentName Moderate-Resolution Imaging SpectroRadiometer
ProcessingDateTime 1999-11-19T20:40:39:000Z
LongName MODIS/Terra Snow Cover 5-Min L2 Swath 500m
Processing Center MODAPS
SPSOParameters none
LocalInputGranuleID Names of input files [MOD-2HKM, ...]

StructMetadata.0

This attribute is used by the HDF-EOS toolkit to specify the mapping relationships between the geolocation data and the snow cover Scientific Data Sets (SDSs). Mapping relationships are unique in HDF-EOS and are stored in the product using HDF structures. A description of the mapping relationships is not provided here.

Object Definition
DIMENSION_1 Along_swath_lines_500m
DIMENSION_2 Cross_swath_pixels_500m
DIMENSION_3 Coarse_swath_lines_5km
DIMENSION_4 Coarse_swath_pixels_5km
DIMENSIONMAP_1 GeoDimension=Coarse_swath_pixels_5km
DataDimension=Cross_swath_pixels_500m
Offset=5
Increment=10
DIMENSIONMAP_2 DataDimension=Along_swath_lines_500m
GeoDimension=Coarse_swath_lines_5km
Offset=5
Increment=10
GEOFIELD_1 GeoFieldName=Latitude
GEOFIELD_2 GeoFieldName=Longitude
DATAFIELD_1 DataFieldName=Snow Cover
DATAFIELD_2 DataFieldName=Snow Cover Pixel QA

Product Specific Attributes

Attribute Name Comment Sample Value
HDFEOSVersion Version of HDF-EOS Toolkit HDFEOS_V2.4
L1BCalibrationQuality General quality indicator of MODIS data marginal
L1BMissionPhase A&E
L1BNadirPointing Yes
L1BVersionID Version of L1B processing algorithm 2000-02-24
L1BAutoQA_EV_1km_RefsB Result of generalized quality analysis of L1B data Suspect
SCFAlgorithmVersion $Id: MOD_PR10_AA...