MOD29P1D, MOD29P1N, MYD29E1D, and MOD29E1D Global Attributes

Three EOSDIS Core System (ECS) global attributes are written during generation of the gridded sea ice products, and are stored as long character strings in parameter value language (PVL) format. Product Specific attributes are also generated.

Product Specific Attributes


Object Name Comments Sample Value
ShortName ESDT¹ name of product MOD29P1D
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 Name of the granule MOD29P1D.A2000360.h08v05.002.20010577071942.hdf
DayNightFlag Can be Day, Night, or Both Day
ProductionDateTime Time granule was produced 2001-02-26T07:19:52.000Z
LocalVersionID Version of algorithm delivered from the SCF². SCF V2.1.1
PGEVersion Version of production generation executable 2.2.5
InputPointer Location of the three input files in the production system MOD29PGD.A2000360.h08v05...
RangeBeginningDate Beginning date of the first scan line in the swath 2000-12-25
RangeBeginningTime Beginning time of the first scan line in the swath 20:40:00.000000
RangeEndingDate Ending date of the last scan line in the swath 2000-12-26
RangeEndingTime Ending time of the last scan line in the swath 00:00:00.000000
ExclusionGRingFlag N
GRingPointLatitude Geographic latitude bounds of swath coverage [48.416946, 50.389365, 59.316235, 56.887169]
GringPointLongitude Geographic longitude bounds of swath coverage [-161.565051, -173.659808, -171.869898, -156.801409]
GRingPointSequenceNo [1,2,3,4]
OrbitNumber 5439
EquatorCrossingLongitude -154.222714
EquatorCrossingDate 2000-12-25
EquatorCrossingTime 20:59:14.690954
ParameterName Parameter for which QA statistics are given. Two containers for QA statistics used. Sea_Ice_by_Reflectance
ParameterName Ice_Surface_Temperature
AutomaticQualityFlag Result of automated checks during the run of the algorithm that screens for significant amounts
of anomalous data
AutomaticQualityFlagExplanation Explanation of result of automated QA checks made during execution No errors detected in processing
QAPercentMissingData 0-100 1
QAPercentCloudCover 0-100 5
ScienceQualityFlag Set by snow investigator after post-production investigation Not being investigated, Not being investigated
ScienceQualityFlagExplanation Explanation of Science Flag Not selected for investigation, Not selected for investigation
QAPercentMissingData 0-100 1
QAPercentCloudCover 0-100 34
AssociatedPlatformShortName Terra
AssociatedInstrumentShortName MODIS
AssociatedSensorShortName VIS
Product Specific Attributes (PSA)
QAPercentGoodQuality Summary quality assurance statistic based on the thermal data. Range is 0-100. 95
QAPercentOtherQuality 2
QAPercentNotProducedCloud 10
QAPercentNotProducedOther 6
HorizontalTileNumber 08
VerticalTileNumber 05
TileID 31008005
SeaIcePercent Summary percentage of sea ice detected (0-100) 68
¹ Earth Science Data Type (ESDT)
² Science Computing Facility (SCF)


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
CharacteristicBinAngularSize 71.725054
CharacteristicBinSize 1002.701000
GEOAnyAbnormal False
GEOEstMaxRMSError 200.00000
DataColumns 951
DataRows 951
GlobalGridColumns 18069
GlobalGridRows 18069
Numberofoverlapgranules Number of staged granules that were mapped into this tile 3
Numberofinputgranules Total number of MOD29 input granules staged 6
Coveragecalculationmethod area
AlgorithmPackageAcceptanceDate Algorithm descriptors 1999-10-28
AlgorithmPackageMaturityCode pre-launch
AlgorithmPackageName MOD29AV2
AlgorithmPackageVersion Version 2.2.1
InstrumentName Moderate-Resolution Imaging SpectroRadiometer
PlatformShortName Terra
ProcessingDateTime 2000-02-26T07:19:42:000Z
LongName MODIS/Terra Sea Ice Extent Daily L3 Global 1km EASE-Grid Day
Processing Center MODAPS
SPSOParameters none
LocalInputGranuleID Names of input files [MOD29PGD..., ...]
EastBoundingCoordinate Extent of swath coverage, in latitude and longitude -156.801409
WestBoundingCoordinate -173.659808
NorthBounding Coordinate 59.316235
SouthBounding Coordinate 48.416946
¹ MCF = Metadata Configuration File


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
GRIDNAME MOD_Grid_Seaice_1km
DATAFIELD_1 Sea_Ice_by_Reflectance
DATAFIELD_2 Sea_Ice_by_Reflectance_Spatial_QA
DATAFIELD_3 Ice_Surface_Temperature
DATAFIELD_4 Ice_Surface_Temperature_Spatial_QA
DATAFIELD_5 Sea_Ice_by_Ice_Surface_Temperature
DATAFIELD_6 Combined_Sea_Ice

Product Specific Attributes

Attribute Name Comment Sample Value
HDFEOSVersion Version of HDF-EOS toolkit HDFEOS_V2.4
MOD29InputGranuleNames Listing of input files used to make the data product [MOD29.A200036..., ...]